AIR TO WATER HEAT PUMP SERVICE MANUAL R40A [Model Name] PUHZ-W85VHA PUHZ-W85VHA-BS [Service Ref.] PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR5.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5-BS.UK November 05 No. OCH465 REVISED EDITI-D Revision: Added PUHZ-W85VHAR5.UK and PUHZ-W85VHAR5-BS.UK in REVISED EDITI-D. Some descriptions have been modified. Please void OCH465 REVISED EDITI-C. Notes: This manual describes only service data of outdoor unit. RoHS compliant products have <G> mark on the spec name plate. CTENTS. TECHNICAL CHANGES.... SAFETY PRECAUTI... 3 3. SPECIFICATIS... 6 4. DATA... 0 5. OUTLINES AND DIMENSIS... 6. WIRING DIAGRAM... 3 7. WIRING SPECIFICATIS... 6 8. REFRIGERANT SYSTEM DIAGRAM... 7 9. TROUBLESHOOTING... 8 0. DISASSEMBLY PROCEDURE... 54 PARTS CATALOG (OCB465)
TECHNICAL CHANGES Service ref. have been changed as follows. PUHZ-W85VHAR4.UK PUHZ-W85VHAR5.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5-BS.UK. The installation direction of LEV-B assy has been changed to reduce high frequency noise. PUHZ-W85VHAR3.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4-BS.UK. A compliance with ErP directive Lot has been authorized.. Outdoor controller board has been changed. PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK. Added a new function "Energy Monitor" which allows remote controller to display power consumption and heat output. PUHZ-W85VHA.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR.UK PUHZ-W85VHAR-BS.UK. Heat exchanger and plate heat exchanger have been changed.. Outdoor controller board has been changed.
SAFETY PRECAUTI -. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. -. CAUTIS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R40A Do not use refrigerant other than R40A. If other refrigerant (R, etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil, etc. Use a vacuum pump with a reverse flow check valve. Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil, etc. Use the following tools specifically designed for use with R40A refrigerant. The following tools are necessary to use R40A refrigerant. Tools for R40A Gauge manifold Vacuum pump adaptor Charge hose Electronic refrigerant charging scale Gas leak detector Torque wrench Handle tools with care. If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor. Do not use a charging cylinder. If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered. Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released. Charge refrigerant from liquid phase of gas cylinder. If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered. Use the specified refrigerant only. Never use any refrigerant other than that specified. Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions. 3
[] Cautions for service () Perform service after recovering the refrigerant left in unit completely. () Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. [] Additional refrigerant charge When charging directly from cylinder Check that cylinder for R40A on the market is a syphon type. Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.) Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R40A refrigerant. No. Tool name Specifications Gauge manifold Only for R40A Use the existing fitting specifications. (UNF/) Use high-tension side pressure of 5.3 MPa G or over. Charge hose Only for R40A Use pressure performance of 5.09 MPa G or over. 3 Electronic scale 4 Gas leak detector Use the detector for R34a, R407C or R40A. 5 Adaptor for reverse flow check Attach on vacuum pump. 6 Refrigerant charge base 7 Refrigerant cylinder Only for R40A Top of cylinder (Pink) Cylinder with syphon 8 Refrigerant recovery equipment 4
-3. CAUTIS FOR REFRIGERANT PIPING WORK Tools for R40A (The following table shows whether conventional tools can be used or not.) Tools and materials Use R40A tools Can R tools be used? Can R407C tools be used? Gauge manifold Charge hose Gas leak detector Refrigerant recovery equipment Refrigerant cylinder Safety charger Tool exclusive for R40A Tool exclusive for R40A Tool for HFC refrigerant Tool exclusive for R40A Tool exclusive for R40A Tool exclusive for R40A Charge valve Vacuum pump Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum gauge or thermistor vacuum gauge and vacuum valve Charging cylinder Air purge, refrigerant charge and operation check Gas leak check Refrigerant recovery Refrigerant charge Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Prevent gas from blowing out when detaching charge hose Vacuum drying and air purge Bend the pipes Cut the pipes Weld the pipes Charge refrigerant Check the degree of vacuum. (Vacuum valve prevents back flow of oil and refrigerant to thermistor vacuum gauge) Refrigerant charge Tool exclusive for R40A Tools for other refrigerants can be used if equipped with adapter for reverse flow check Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tool exclusive for R40A : Prepare a new tool. (Use the new tool as the tool exclusive for R40A.) : Tools for other refrigerants can be used under certain conditions. : Tools for other refrigerants can be used. (Usable if equipped with adapter for reverse flow) (Usable if equipped with adapter for reverse flow) -4. PRECAUTIS FOR SALT PROOF TYPE "-BS" MODEL Although "-BS" model has been designed to be resistant to salt damage, observe the following precautions to maintain the performance of the unit.. Avoid installing the unit in a location where it will be exposed directly to seawater or sea breeze.. If the cover panel may become covered with salt, be sure to install the unit in a location where the salt will be washed away by rainwater. (If a sunshade is installed, rainwater may not clean the panel.) 3. To ensure that water does not collect in the base of the outdoor unit, make sure that the base is level, not at angle. Water collecting in the base of the outdoor unit could cause rust. 4. If the unit is installed in a coastal area, clean the unit with water regularly to remove any salt build-up. 5. If the unit is damaged during installation or maintenance, be sure to repair it. 6. Be sure to check the condition of the unit regularly. 7. Be sure to install the unit in a location with good drainage. 5
3 SPECIFICATIS 3-. SPECIFICATIS PUHZ-W85VHA.UK Power supply (Phase, Voltage, Frequency) PUHZ-W85VHA-BS.UK 6 Nominal operating condition Nominal water flow rate (Heating mode) L/min 5.8 Heating(A7/W35) Heating Capacity kw (Min..70) 9.00 Outside air temperature (Dry-bulb) + 7 C (A7/W35) COP 4.8 Outside air temperature (Wet-bulb) + 6 C Power input kw.5 Water temperature (inlet/outlet) +30/+35 C Heating Capacity kw (Min..60) 8.50 Heating(A/W35) (A/W35) COP 3.7 Outside air temperature (Dry-bulb) + C Power input kw.68 Outside air temperature (Wet-bulb) + C Pressure difference (water circuit) kpa 3.5 Water temperature (inlet/outlet) -/+35 C Heating pump input (based on EN45) kw 0.0 Cooling(A35/W7) Nominal water flow rate (Cooling mode) L/min.5 Outside air temperature (Dry-bulb) +35 C Cooling Capacity kw 7.50 Outside air temperature (Wet-bulb) + 4 C (A35/W7) EER (COP).47 Water temperature (inlet/outlet) +/+7 C Power input kw 3.04 Cooling(A35/W8) Cooling Capacity kw 7.50 Outside air temperature (Dry-bulb) +35 C (A35/W8) EER (COP) 3.93 Outside air temperature (Wet-bulb) + 4 C Power input kw.9 Water temperature (inlet/outlet) +3/+8 C Pressure difference (water circuit) kpa 0 Note: We confirm that our units are tested based on EN45. Cooling pump input (based on EN45) kw 0.0 Note: "Capacity", "COP" and "Power input" in the above table are values that contains the "pump input (based on EN 45) ". Outdoor unit specifications Service Ref. Refrigerant control Compressor Crankcase heater Heat exchanger Model Motor output Start type Protection devices Oil (Model) Air Water Fan(drive) No. Fan motor output Air flow kw L W Fan kw m³/min (CFM) Defrost method Noise level (SPL) Heating db Cooling db Dimensions Width mm (in) Depth mm (in) Height mm (in) kg (lb ) Weight Refrigerant Quantity kg (lb) Guaranteed operating Heating C range (Outdoor) Cooling C Outlet water temp. Heating C (Max in heating, Min in cooling) Cooling C Nominal return water Heating C temperature range Cooling C Water flow rate range L/min, 30 V, 50 Hz Hermetic twin rotary TNB0FLHMT.3 Inverter HP switch Discharge thermo Comp. surface thermo 0.67 (FV50S) - Plate fin coil Plate heat exchanger Propeller fan 0.060 49 (,730) Reverse cycle * 48 * 48 * 950 (37-3/8) 330 +30 (*3) (3+-3/6) 943 (37-/8) 79 (74) R40A.4 (5.3) 0 to +35 (*4) 5 to +46 +60 +5 +5 to +59 +8 to +8 0.0 to +5.8 *5 Plate heat exchanger ALFA LAVAL ACH30 5 PUHZ-W85VHA(-BS).UK Running current Heating(A7/W35) A 9.38 0 Cooling(A35/W7) A 3.5 Power factor Heating(A7/W35) % 98 A:40.4 mm Cooling(A35/W7) % 98 B:68. mm Max. current A 3.0 Breaker size A 5 W:93 mm Outer casing Galvanized plate H:35 mm External finish Munsell 3Y 7.8/. D:84 mm Linear expansion valve 50 plates Maximum outlet water temperature Maximum outlet water temperature [ C] 65 60 55 50 45 40 Ref. IN (Heating) Ref. OUT (Heating) * Hot gas with 4-way valve * At distance of m from outdoor unit *3 Grille *4 With the optional air outlet guide, the operation at 5 C outdoor temperature is possible. *5 For details of the min. return water temperature at each water flow rate, refer to 3-. AVAILABLE RANGE (WATER FLOW RATE, RETURN WATER TEMP.). B W A Thermistor (TH3) D H Water OUT Water IN -0-5 -0-5 0 5 0 Ambient temperature [ C]
PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK Power supply (Phase, Voltage, Frequency), 30 V, 50 Hz Nominal operating condition Nominal water flow rate (Heating mode) L/min 5.8 Heating(A7/W35) Heating Capacity kw (Min..70) 9.00 Outside air temperature (Dry-bulb) + 7 C (A7/W35) COP 4.8 Outside air temperature (Wet-bulb) + 6 C Power input kw.5 Water temperature (inlet/outlet) +30/+35 C Heating Capacity kw (Min..60) 8.50 Heating(A/W35) (A/W35) COP 3.7 Outside air temperature (Dry-bulb) + C Power input kw.68 Outside air temperature (Wet-bulb) + C Pressure difference (water circuit) kpa 3.5 Water temperature (inlet/outlet) -/+35 C Heating pump input (based on EN45) kw 0.0 Cooling(A35/W7) Nominal water flow rate (Cooling mode) L/min.5 Outside air temperature (Dry-bulb) +35 C Cooling Capacity kw 7.50 Outside air temperature (Wet-bulb) + 4 C (A35/W7) EER (COP).47 Water temperature (inlet/outlet) +/+7 C Power input kw 3.04 Cooling(A35/W8) Cooling Capacity kw 7.50 Outside air temperature (Dry-bulb) +35 C (A35/W8) EER (COP) 3.93 Outside air temperature (Wet-bulb) + 4 C Power input kw.9 Water temperature (inlet/outlet) +3/+8 C Pressure difference (water circuit) kpa 0 Note: We confirm that our units are tested based on EN45. Cooling pump input (based on EN45) kw 0.0 Note: "Capacity", "COP" and "Power input" in the above table are values that contains the "pump input (based on EN 45) ". Outdoor unit specifications Plate heat exchanger Service Ref. PUHZ-W85VHAR(-BS).UK MITSUBISHI PUHZ-W85VHAR3(-BS).UK W MWA 44LM Running current Heating(A7/W35) A 9.38 Power factor Cooling(A35/W7) A 3.5 A:39 mm Ref. IN Water OUT Heating(A7/W35) % 98 (Heating) B:68. mm Cooling(A35/W7) % 98 Max. current A 3.0 B W:93 mm Breaker size A 5 H:35 mm H Outer casing Galvanized plate A D:77. mm External finish Munsell 3Y 7.8/. Ref. OUT Water IN 44 plates (Heating) Refrigerant control Linear expansion valve Thermistor Compressor Hermetic twin rotary (TH3) Model TNB0FLHMT D Motor output kw.3 Start type Inverter Protection devices HP switch Discharge thermo Comp. surface thermo overcurrent detection Maximum outlet water temperature 65 Oil (Model) L 0.67 (FV50S) Crankcase heater W - 60 Heat exchanger Air Plate fin coil Water Plate heat exchanger Fan Fan(drive) No. Propeller fan 55 Fan motor output kw 0.060 Air flow m³/min (CFM) 49 (,730) 50 Defrost method Reverse cycle * 45 Noise level (SPL) Heating db 48 * Cooling db 48 * 40 Dimensions Width mm (in) 950 (37-3/8) 0 5 0 5 0 5 0 Depth mm (in) 330 +30 *3 (3+-3/6) Ambient temperature [ C] Height mm (in) 943 (37-/8) Weight Refrigerant kg (lb) 79 (74) R40A * Hot gas with 4-way valve * At distance of m from outdoor unit Quantity kg (lb).4 (5.3) *3 Grille Guaranteed operating Heating C 0 to +35 *4 With the optional air outlet guide, the operation at (*4) range (Outdoor) Cooling C 5 C outdoor temperature is possible. 5 to +46 Outlet water temp. Heating C +60 *5 For details of the min. return water temperature at each water flow rate, refer to 3-. AVAILABLE RANGE (Max in heating, Min in cooling) Cooling C +5 (WATER FLOW RATE, RETURN WATER TEMP.).3-. AVAILAB Nominal return water Heating C +5 to +59 (WATER FLOW RATE, RETURN WATER TEMP.). temperature range Cooling C +8 to +8 Water flow rate range L/min 0.0 to +5.8 *5 Maximum outlet water temperature [ C] 7
PUHZ-W85VHAR4.UK PUHZ-W85VHAR5.UK Power supply (Phase, Voltage, Frequency) PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5-BS.UK Nominal operating condition Nominal water flow rate (Heating mode) L/min 5.8 Heating(A7/W35) Heating Capacity kw (Min..70) 9.00 Outside air temperature (Dry-bulb) + 7 C (A7/W35) COP 4.8 Outside air temperature (Wet-bulb) + 6 C Power input kw.5 Water temperature (inlet/outlet) +30/+35 C Heating Capacity kw (Min..60) 8.50 Heating(A/W35) (A/W35) COP 3.7 Outside air temperature (Dry-bulb) + C Power input kw.68 Outside air temperature (Wet-bulb) + C Pressure difference (water circuit) kpa 3.5 Water temperature (inlet/outlet) -/+35 C Heating pump input (based on EN45) kw 0.046 Cooling(A35/W7) Nominal water flow rate (Cooling mode) L/min.5 Outside air temperature (Dry-bulb) +35 C Cooling Capacity kw 7.50 Outside air temperature (Wet-bulb) + 4 C (A35/W7) EER (COP).47 Water temperature (inlet/outlet) +/+7 C Power input kw 3.04 Cooling(A35/W8) Cooling Capacity kw 7.50 Outside air temperature (Dry-bulb) +35 C (A35/W8) EER (COP) 3.93 Outside air temperature (Wet-bulb) + 4 C Power input kw.9 Water temperature (inlet/outlet) +3/+8 C Pressure difference (water circuit) kpa 0 Note: We confirm that our units are tested based on EN45. Cooling pump input (based on EN45) kw 0.033 Note: "Capacity", "COP" and "Power input" in the above table are values that contains the "pump input (based on EN 45) ". Outdoor unit specifications Service Ref. Plate heat exchanger MITSUBISHI Running current Heating(A7/W35) A 9.38 MWA 44LM Cooling(A35/W7) A 3.5 Power factor Heating(A7/W35) % 98 A: 39 mm Max. current Cooling(A35/W7) % A 98 3.0 B:68. m Breaker size A 5 W:93 mm Outer casing Galvanized plate H:35 mm External finish Munsell 3Y 7.8/. D:77. mm Linear expansion valve 44 plates Refrigerant control Compressor Crankcase heater Heat exchanger Model Motor output Start type Protection devices Oil (Model) Air Water Fan(drive) No. Fan motor output Air flow kw L W Fan kw m³/min (CFM) Defrost method Noise level (SPL) Heating db Cooling db Dimensions Width mm (in) Depth mm (in) Height mm (in) kg (lb) Weight Refrigerant Quantity kg (lb) Guaranteed operating Heating C range (Outdoor) Cooling C Outlet water temp. Heating C (Max in heating, Min in cooling) Cooling C Nominal return water Heating C temperature range Cooling C Water flow rate range L/min, 30 V, 50 Hz PUHZ-W85VHAR4(-BS).UK PUHZ-W85VHAR5(-BS).UK Hermetic twin rotary TNB0FLHMT.3 Inverter HP switch Discharge thermo Comp. surface thermo overcurrent detection 0.67 (FV50S) - Plate fin coil Plate heat exchanger Propeller fan 0.074 49 (,730) Reverse cycle * 48 * 48 * 950 (37-3/8) 330 +30 *3 (3+-3/6) 943 (37-/8) 79 (74) R40A.4 (5.3) 0 to + (*4) 5 to +46 +60 +5 +5 to +59 +8 to +8 0.8 to +5.8 *5 Maximum outlet water temperature Maximum outlet water temperature [ C] 65 60 55 50 45 40 0 Ref. IN (Heating) Ref. OUT (Heating) B W A Thermistor (TH3) * Hot gas with 4-way valve * At distance of m from outdoor unit *3 Grille *4 With the optional air outlet guide, the operation at 5 C outdoor temperature is possible. *5 For details of the min. return water temperature at each water flow rate, refer to 3-. AVAILABLE RANGE (WATER FLOW RATE, RETURN WATER TEMP.).3-. AVAILAB (WATER FLOW RATE, RETURN WATER TEMP.). D H Water OUT Water IN 5 0 5 0 5 0 Ambient temperature [ C] 8
3-. AVAILABLE RANGE (WATER FLOW RATE, RETURN WATER TEMP.) Note: If the value of water flow rate and return water temp. become lower than the available range, it could cause damage to the parts of unit. <Heating> Return water temp [:] 9.0 7.0 Available range 5.0 3.0.0 9.0 7.0 5.0 0.0.0 4.0 6.0 8.0 0.0.0 4.0 Water flow rate [L/min] Table <Applicable Models> PUHZ-W85VHA(-BS).UK PUHZ-W85VHAR(-BS).UK PUHZ-W85VHAR3(-BS).UK PUHZ-W85VHAR4(-BS).UK PUHZ-W85VHAR5(-BS).UK <Cooling> Return water temp [:] 5.0 4.0 3.0 Available range.0.0 0.0 9.0 8.0 7.0 6.0 5.0 0.0.0 4.0 6.0 8.0 0.0.0 4.0 <Applicable Models> PUHZ-W85VHA(-BS).UK PUHZ-W85VHAR(-BS).UK PUHZ-W85VHAR3(-BS).UK PUHZ-W85VHAR4(-BS).UK PUHZ-W85VHAR5(-BS).UK Water flow rate [L/min] Table 9
4 DATA 4-. NOISE CRITERI CURVES MICROPHE m UNIT.5m GROUND PUHZ-W85VHA(-BS).UK PUHZ-W85VHAR(-BS).UK PUHZ-W85VHAR3(-BS).UK PUHZ-W85VHAR4(-BS).UK MODE PUHZ-W85VHAR5(-BS).UK COOLING 90 HEATING SPL(dB) 48 48 LINE OCTAVE BAND SOUND PRESSURE LEVEL, db (0 db = 0.000 bar) 80 70 60 50 40 30 0 0 APPROXIMATE THRESHOLD OF HEARING FOR CTINUOUS NOISE 63 5 50 500 000 000 4000 8000 BAND CENTER FREQUENCIES, Hz NC-70 NC-60 NC-50 NC-40 NC-30 NC-0 0
4-. STANDARD OPERATI DATA Mode Cooling (A35/W7) Heating (A7/W35) Total Electrical circuit Capacity W 7,500 9,000 Input kw 3.04.5 Outdoor unit PUHZ-W85VHA Phase, Hz, 50 Voltage V 30 Current A 3.5 9.38 Discharge pressure MPa.8.6 Refrigerant circuit Suction pressure MPa 0.73 0.64 Discharge temperature ºC 80 65 Condensing temperature ºC 46 37 Suction temperature ºC 3 - Water conditions Flow volume L/min.5 5.8 Outlet water temperature ºC 7 35 Outdoor conditions Intake air temperature D.B. ºC 35 7 W.B. ºC 4 6 The unit of pressure has been changed to MPa based on international SI system. The conversion factor is: (MPa) = 0. (kgf/cm²) We confirm that our units are tested based on EN 45.
5 OUTLINES AND DIMENSIS PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR5.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5-BS.UK ISO 8/-G B 98 69 Unit: mm Side Air Intake -U Shaped notched holes (Foundation Bolt M0) Rear Air Intake 75 600 75 Installation Feet 53 8 370 47 9 Air Discharge - x 36 oval holes (Foundation Bolt M0) Drain hole (5-[33) 30 330 30 0 45 45 45 8 9 Rear Air Intake Side Air Intake Handle for moving Handle for moving Water OUT Handle for moving Air Intake Water IN 57 Power supply wiring hole (-[7 knockout) 34 Front cover Side Panel R Detail See Detail 9 40 Handle for moving 3 950 Earth terminal Terminal Connections Left...Power supply wiring Right...Controller wiring Handle for moving Service panel 4 943 3 473 66 FREE SPACE (Around the unit) SERVICE SPACE 3 FOUNDATI BOLTS The diagram below shows a basic example. Explanation of particular details are given in the installation manuals etc. Dimensions of space needed for service access are shown in the below diagram. Please secure the unit firmly with 4 foundation (M0) bolts. (Bolts and washers must be purchased locally.) FREE <Foundation bolt height> Over 300mm Over 0mm Over0 Service space FOUNDATI Over 500 Less than 30 Over300 Over 500 Over 500mm Over 0mm
6 WIRING DIAGRAM PUHZ-W85VHA.UK PUHZ-W85VHA-BS.UK SYMBOL NAME SYMBOL NAME TB Terminal Block <Power Supply,Interface unit / TABP/P Connection Terminal <DC Voltage> Flow temp. controller> TABN/N Connection Terminal <DC Voltage> MC Motor for Compressor DS, DS3 Diode bridge MF Fan Motor IPM Power Module S4 SV Solenoid Valve <Four-Way Valve> Solenoid Valve <Bypass Valve> N.F. LI,LO Noise Filter Circuit Board Connection Terminal <L-Phase> 63H High Pressure Switch NI,NO Connection Terminal <N-Phase> 63HS High Pressure Sensor EI,E Connection Terminal <Ground> TH3 Thermistor <Liquid> 5C 5C Relay TH4 TH6 TH7 TH8 Thermistor <Discharge> Thermistor <Plate HEX Iiquid> Thermistor <Ambient> Thermistor <Heat sink> C.B. SW SW SW5 Controller Circuit Board Switch <Function Switch> Switch <Function Switch> Switch <Function Switch> TH3 Thermistor <Inlet water> SW6 Switch <Model Select> TH33 Thermistor <Comp. Surface> SW7 Switch <Function Switch> LEV-A, LEV-B DCL Electronic Expansion Valve Reactor SW8 SW0 Switch <Function Switch> Switch <Model Select> ACTM Active Filter Module SV Connector <Connection for Option> CY,CY Capacitor CNDM Connector <Connection for Option(Contact Input)> P.B. Power Circuit Board LED3 LED <Operation/Inspection Indicators> TABU/V/W Connection Terminal <U/V/W-Phase> F F4 Fuse <T6.3AL50V> TABS/T Connection Terminal <L/N-Phase> X5, X54, X55 Relay MF MS 3 MODEL SELECT SW6 3 4 5 6 TH33TH3 TH7 TH6 TH3 TH4 63H 63HS LEV-A LEV-B 0 0 0 C. B. M M =, 0=OFF t t t t t t 7 CNF (WHT) 4 3 6 6 3 5 TH33 TH3 TH7/6 TH3 TH4 63HS LEV-A LEV-B CNVMNT CNMNT (YLW) (BLK) (RED) (WHT) (WHT) (WHT) (WHT) (RED) (WHT) (WHT) 3 63H (YLW) 3 CN5C CN4 TRANS CN (RED) CN3S (WHT) (WHT) (WHT) 7 3 CNDC LED3 CNDM (PNK) (WHT) 3 7 CN5 F F3 (WHT) CNAC (WHT) 5 CNS (WHT) F F4 S4 3 3 SV 3 SV 3 3 4 (GRN) (BLU) (GRY) X5 X55 X54 SW5 SW8 SW6 SW SW7 SW SW0 SW0 0 S4 SV WHT BLU N. F. LO NO P. B. 5C CN5C (BLK) 4 7 TH8 t CNAF (WHT) 6 CN (WHT) 7 CN3 (WHT) CN5 (RED) CN4 (WHT) TABN TABP TABP RED IPM TABU TABV CNDC (PNK) 3 TABW TABN BLK U TABN DS3 TABT BLU DS TABS WHT TABP RED CNAC (RED) 3 3 CNAC (WHT) LI U NI U E CN5 (RED) EI BLK BLK RED WHT BLK U V W MS 3 MC WHT RED YLW ORN BLU BRN RED BLK DCL WHT L WHT 4 L 6 P RED N N WHT Io ACTM RED BLU L N GRN/YLW S S S3 Interface unit / Flow temp. controller CY CY TB POWER SUPPLY / N 30V 50Hz 3
PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4-BS.UK MF MS 3~ SYMBOL NAME SYMBOL NAME TB Terminal Block<Power Supply,Interface unit / TABP/P Connection Terminal<DC Voltage> Flow temp. controller> TABN/N Connection Terminal<DC Voltage> MC Motor for Compressor DS, DS3 Diode bridge MF Fan Motor IPM Power Module S4 SV Solenoid Valve(Four-Way Valve) Solenoid Valve<Bypass Valve> N. F. LI, LO Noise Filter Circuit Board Connection Terminal<L-Phase> 63H High Pressure Switch NI, NO Connection Terminal<N-Phase> 63HS High Pressure Sensor EI, E Connection Terminal<Ground> TH3 Thermistor<Liquid> 5C 5C Relay TH4 TH6 TH7 TH8 Thermistor<Discharge> Thermistor<Plate HEX Liquid> Thermistor<Ambient> Thermistor<Heat Sink> C. B. SW SW SW5 Controller Circuit Board Switch<Function Switch> Switch<Function Switch> Switch<Function Switch, Model Select> TH3 Thermistor<Inlet Water> SW6 Switch<Model Select> TH33 Thermistor<Comp. Surface> SW7 Switch<Function Switch> LEV-A, LEV-B DCL Linear Expansion Valve Reactor SW8 SW0 Switch<Function Switch> Switch<Function Switch, Model Select> ACTM Active Filter Module SV Connector<Connection for Option> CY, CY Capacitor CNDM Connector<Connection for Option> P. B. Power Circuit Board LED3 LED<Operation/Inspection Indicators> TABU/V/W Connection Terminal<U/V/W-Phase> F, F, F3, F4 Fuse<T6.3AL50V> TABS/T Connection Terminal<L/N-Phase> X5, X54, X55 Relay MODEL SELECT * The black square ( ) indicates a switch position. SW5-4 * SW6 SW0- * C. B. OFF OFF OFF TH33TH3 TH7 TH6 TH3 TH4 3 4 3 4 5 6 63H 63HS LEV-A LEV-B M M. SW5 - to 3 : Function Switch * SW0 - : Function Switch t t t t t t 7 CNF (WHT) 4 3 6 6 3 5 TH33 TH3 TH7/6 TH3 TH4 63HS LEV-A LEV-B CNVMNT CNMNT * * (YLW) (BLK) (RED) (WHT) (WHT) (WHT) (WHT) (RED) (WHT) (WHT) 3 63H * (YLW) 3 CN5C CN4 TRANS CN (RED) CN3S (WHT) (WHT) (WHT) 7 3 CNDC LED3 CNDM (PNK) (WHT) 3 7 CN5 F F3 (WHT) CNAC (WHT) 5 CNS (WHT) F F4 S4 3 3 SV 3 SV 3 3 4 (GRN) (BLU) (GRY) X5 X55 X54 SW5 SW8 SW6 SW SW SW7 SW0 S4 SV WHT BLU N. F. LO NO 5C P. B. CN5C (BLK) 4 7 TH8 t CNAF (WHT) 6 CN (WHT) 7 CN3 (WHT) CN5 (RED) CN4 (WHT) TABN TABP TABP RED IPM TABU TABV CNDC (PNK) 3 TABW TABN BLK TABN DS3 DS TABT BLU TABS WHT TABP RED CNAC (RED) 3 3 CNAC (WHT) LI NI E CN5 (RED) EI BLK BLK RED WHT BLK U V W MS 3~ MC WHT RED YLW ORN BLU BRN DCL WHT WHT 4 RED BLU GRN/YLW CY CY RED BLK L L 6 P RED N N WHT Io ACTM L N S S S3 Interface unit / Flow temp. controller TB 4 POWER SUPPLY ~ / N 30V 50Hz
PUHZ-W85VHAR5.UK MF MS 3~ C. B. 7 CNF (WH) 3 CNDC (PK) PUHZ-W85VHAR5-BS.UK SYMBOL NAME SYMBOL NAME TB Terminal Block ACTM Active Filter Module <Power Supply, Indoor/Outdoor> CY, CY Capacitor MC Motor for Compressor P. B. Power Circuit Board MF Fan Motor N. F. Noise Filter Circuit Board S4 SV Solenoid Valve (4-Way Valve) Solenoid Valve (Bypass Valve) C. B. F, F, F3, F4 Controller Circuit Board Fuse <T6.3AL50V> 63H High Pressure Switch SW Switch <Manual Defrost, Defect History 63HS High Pressure Sensor Record Reset, Function Switch> TH3 TH4 TH6 TH7 Thermistor <Liquid> Thermistor <Discharge> Thermistor <Plate HEX Liquid> Thermistor <Ambient> SW SW5 SW6 SW7 Switch <Function Switch> Switch <Function Switch, Model Select> Switch <Model Select> Switch <Function Switch> TH8 Thermistor <Heat Sink> SW8 Switch <Function Switch> TH3 Thermistor <Inlet Water> SW0 Switch <Function Switch, Model Select> TH33 Thermistor <Comp. Surface> CNDM Connector <Connection for Option> LEV-A, LEV-B DCL Linear Expansion Valve Reactor SV Connector <Connection for Option> MODEL SELECT * The black square ( ) indicates a switch position. MODEL SW5-4 * SW6 SW0- * 85V OFF OFF 63H 63HS LEV-A LEV-B 3 4 3 4 5 6 TH33TH3 TH7 TH6 TH3 TH4 M M t t t t t t SW5 - to 3 : Function Switch * SW0 - : Function Switch * 4 3 6 6 3 5 TH33 TH3 TH7/6 TH3 TH4 63HS LEV-A LEV-B CNVMNT CNMNT * (YE) (BK) (RD) (WH) (WH) (WH) (WH) (RD) (WH) (WH) 3 63H * (YE) CN5C CN4 TRANS CN (RD) (WH) (WH) 7 LED3 CNDM (WH) 3 SW5 SW8 SW6 SW SW SW7 SW0 OFF CNS (WH) 3 F F CNAC (WH) 3 4 F3 F4 7 S4 (GN) 3 X5 3 X55 X54 SV 3 SV (BU) (GY) S4 SV WH BU N. F. LO NO P. B. CN5C (BK) 4 7 TH8 t CNAF (WH) 6 CN (WH) 7 CN3 (WH) CN5 (RD) CN4 (WH) TABN TABP TABP RD IPM TABU TABV CNDC (PK) 3 TABW TABN BK TABN DS3 DS TABT TABS TABP BU WH RD 3 CNAC (RD) RD WH BK U V W MS 3~ MC WH BU BN YE OG 3 CNAC (WH) LI NI E CN5 (RD) EI BK BK RD DCL BK WH 4 RD BU GNYE CY CY RD BK L L 6 P N N Io ACTM RD WH L N S S S3 TB TO INDOOR UNIT POWER SUPPLY ~/N 30V 50Hz 5
7 WIRING SPECIFICATIS FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model Outdoor unit power supply Outdoor unit Circuit Breaker capacity Wiring Wire No. size (mm²) Circuit rating 85V ~/N (single), 50 Hz, 30 V * 5A Outdoor unit power supply, earth 3 Min. 4 Interface unit/flow temp. controller-outdoor unit * 3.5 (polar) Interface unit/flow temp. controller-outdoor unit earth * Min..5 Remote controller-interface unit/flow temp. controller 0.3 (Non-polar) 30 V DC Outdoor unit L-N (single) *3 Interface unit/flow temp. controller-outdoor unit S-S *3 Interface unit/flow temp. controller-outdoor unit S-S3 *3 Remote controller-interface unit/flow temp. controller *3 30 V DC 4 V DC V DC *. A breaker with at least 3.0 mm contact separation in each poles shall be provided. Use earth leakage breaker (NV). Make sure that the current leakage breaker is one compatible with higher harmonics. Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter. The use of an inadequate breaker can cause the incorrect operation of inverter. *. Maximum 80 m *3.The figures are NOT always against the ground. S3 terminal has 4 V DC against S terminal. However between S3 and S, these terminals are NOT electrically insulated by the transformer or other device. Caution: Be sure to install N-line. Without N-line, it could damage the unit. Notes:. Wiring size must comply with the applicable local and national codes.. Power supply cables and the cables between Controller and Outdoor unit shall not be lighter than polychloroprene sheathed flexible cables. (Design 6045 IEC 57) 3. Be sure to connect the cables between Controller and Outdoor unit directly to the units (no intermediate connections are allowed). Intermediate connections may result in communication errors. If water enters at the intermediate connection point, it may cause insufficient insulation to ground or a poor electrical contact. 4. Install an earth longer than other cables. 5. Do not construct a system with a power supply that is turned and OFF frequently. Power supply Isolator 3 poles isolator S A-Control S Outdoor Unit S3 S Interface unit/ S Flow temp. controller S3 Warning: In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S, S, S3 terminals when the power is energized. If isolator should be used between Interface unit/flow temp. controller and outdoor unit, please use 3-pole type. 6
8 REFRIGERANT SYSTEM DIAGRAM PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR5.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5-BS.UK P-Sensor TH7 CHECK/V REV/V S/V TH3 Water OUT CHECK/V CHECK/V H/P SW Distributor Plate HEX Receiver TH4 TH33 Strainer (#00) TH8 P/B Water IN TH3 TH6 LEV-B Strainer (#00) LEV-A COMP Strainer(#00) Strainer(#00) Refrigerant flow in heating Refrigerant flow in cooling Symbol Part name Detail COMP Compressor DC inverter twin rotary compressor (Mitsubishi Electric Corporation) H/P SW High pressure switch (63H) For protection (OFF: 4.5MPa) Plate HEX Plate Heat Exchanger ACH30-50 Plates (Alfa Laval) (for PUHZ-W85VHA(-BS).UK) MWA-44LM (MITSUBISHI) (for PUHZ-W85VHAR/R3/R4/R5(-BS).UK) REV/V Reversing (4-way) valve (S4) Change the refrigerant circuit (Heating/Cooling) and for Defrosting S/V Solenoid valve For production test use CHECK/V Check valve High pressure/low pressure/for production test use P-Sensor Pressure sensor (63HS) For calculation of the condensing temperature from high pressure P/B Power board Inverter power board LEV-A Linear expansion valve -A Heating: Secondary LEV Cooling: Primary LEV LEV-B Linear expansion valve -B Heating: Primary LEV Cooling: Secondary LEV TH3 Inlet water temperature thermistor For freeze protection and for compressor frequency control TH3 Liquid temperature thermistor Heating: Evaporating temperature Cooling: Sub cool liquid temperature TH4 Discharge temperature thermistor For LEV control and for compressor protection TH6 Plate HEX liquid temperature thermistor Heating: Sub cool liquid temperature Cooling: Evaporating temperature TH7 Ambient temperature thermistor For fan control and for compressor frequency control TH8 Heat sink temperature thermistor For power board protection TH33 Comp.surface temperature thermistor For compressor protection Receiver Receiver For accumulation of refrigerant 7
9 TROUBLESHOOTING 9-. TROUBLESHOOTING <Check code displayed by self-diagnosis and actions to be taken for service (summary)> Present and past check codes are logged, and they can be displayed on the control board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summarized in the table below. Check the contents below before investigating details. Unit conditions at service Check code Actions to be taken for service (summary) The trouble is reoccurring. Displayed Not displayed Judge what is wrong and take a corrective action according to 9-3. SELF-DIAGNOSIS ACTI TABLE. Conduct troubleshooting and ascertain the cause of the trouble. The trouble is not reoccurring. Logged Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise, etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the trouble occurred, matters related to wiring, etc. Reset check code logs and restart the unit after finishing service. 3There is no abnormality in electrical component, controller board, etc. Not logged Re-check the abnormal symptom. Conduct troubleshooting and ascertain the cause of the trouble. 3Continue to operate unit for the time being if the cause is not ascertained. 4There is no abnormality concerning of parts such as electrical component, controller board, etc. 9-. CHECK POINT UNDER TEST RUN Before test run After installation of outdoor units, piping work and electric wiring work, re-check that there is no water leakage, loosened connections and incorrect polarity. Measure impedance between the ground and the power supply terminal block (L, N) on the outdoor unit by 500 V Megger and check that it is.0 M or over. Turn on power supply hours before test run in order to protect compressor. Make sure to read operation manual before test run. (Especially items to secure safety.) 8
9-3. SELF-DIAGNOSIS ACTI TABLE <Abnormalities detected when the power is turned on> Check code Abnormal point and detection method Case Judgment and action No voltage is supplied to terminal Check following items. block (TB) of outdoor unit. a) Power supply breaker is a) Power supply breaker turned off. b) Contact failure or disconnection of power supply terminal c) Open phase (L or N phase) b) Connection of power supply terminal block (TB) c) Connection of power supply terminal block (TB) None Electric power is not charged to power supply terminal of outdoor power circuit board. a) Contact failure of power supply terminal b) Open phase on the outdoor power circuit board Disconnection of connector TABT or TABS 3 Electric power is not supplied to outdoor controller circuit board. a) Disconnection of connector (CNDC) 4 Disconnection of reactor (DCL) 5 Disconnection of outdoor noise filter circuit board or parts failure in outdoor noise filter circuit board 6 Defective outdoor power circuit board 7 Defective outdoor controller circuit board Check following items. a) Connection of power supply terminal block (TB) b) Connection of terminal on outdoor power circuit board Check connection of the connector TABT or TABS. Refer to "9-6. TEST POINT DIAGRAM". 3 Check connection of the connector (CNDC) on the outdoor controller circuit board. Check connection of the connector CNDC on the outdoor power circuit board. Refer to "9-6. TEST POINT DIAGRAM". 4 Check connection of reactor. (DCL) Check connection of L and L on the active filter module. (ACTM) Refer to "9-6. TEST POINT DIAGRAM". 5 a) Check connection of outdoor noise filter circuit board. Refer to "9-6. TEST POINT DIAGRAM". b) Replace outdoor noise filter circuit board. Refer to "9-6. TEST POINT DIAGRAM". 6 Replace outdoor power circuit board. 7 Replace controller board (When items above are checked but the units cannot be repaired.) F5 63H connector open Abnormal if 63H connector circuit is open for 3 minutes continuously from being switched on. 63H: High-pressure switch Disconnection or contact failure of 63H connector on outdoor controller circuit board Disconnection or contact failure of 63H 3 63H is working due to defective parts. 4 Defective outdoor controller circuit board Check connection of 63H connector on outdoor controller circuit board. Refer to "9-6. TEST POINT DIAGRAM". Check the 63H side of connecting wire. 3 Check for continuity of 63H. Replace high pressure switch if it is defective. 4 Replace outdoor controller circuit board. 9
Check code Abnormal point and detection method Case Judgment and action EA Eb Miswiring of Interface unit/flow temp. controller-outdoor unit connecting wire. Outdoor controller circuit board can automatically check the number of connected Interface unit/flow temp. controller. Abnormal if the number cannot be checked automatically due to miswiring of Interface unit/flow temp. controller-outdoor unit connecting wire and etc. after power is turned on for 4 minutes.. Abnormal if outdoor controller circuit board recognizes excessive number of Interface unit/flow temp. controller. Miswiring of Interface unit/flow temp. controller-outdoor unit connecting wire (converse wiring or disconnection) Outdoor controller circuit board can automatically set the unit number of Interface unit/flow temp. controller. Abnormal if the Interface unit/flow temp. controller number cannot be set within 4 minutes after power on because of miswiring (converse wiring or disconnection) of Interface unit/flow temp. controller-outdoor unit connecting wire. Contact failure or miswiring of Interface unit/flow temp. controller-outdoor unit connecting wire Diameter or length of Interface unit/flow temp. controlleroutdoor unit connecting wire is out of specified capacity. Excessive number of Interface unit/flow temp. controller is connected to outdoor unit. ( units or more) Defective transmitting receiving circuit of outdoor controller circuit board Defective transmitting receiving circuit of Interface/Flow temp. controller board Noise has entered into power supply or Interface/Flow temp. controller-outdoor unit connecting wire. Contact failure or miswiring of Interface unit/flow temp. controlleroutdoor unit connecting wire Diameter or length of Interface unit/flow temp. controlleroutdoor unit connecting wire is out of specified capacity. Defective transmitting receiving circuit of outdoor controller circuit board Defective transmitting receiving circuit of Interface/Flow temp. controller board Noise has entered into power supply or Interface unit/flow temp. controller-outdoor unit connecting wire. Check disconnection or looseness or polarity of Interface unit/flow temp. controller-outdoor unit connecting wire of Interface unit/flow temp. controller and outdoor units. Check diameter and length of Interface unit/ Flow temp. controller-outdoor unit connecting wire. Total wiring length: 80 m (Including wiring connecting each Interface unit/flow temp. controller unit and between Interface unit/flow temp. controller and outdoor unit) Also check if the connection order of flat cable is S, S, S3. Check the number of Interface unit/flow temp. controller that is connected to outdoor unit. (If EA is detected.) Turn the power off once, and on again to check. Replace outdoor controller circuit board or Interface/Flow temp. controller board if abnormality occurs again. Check transmission path, and remove the cause. Note: The descriptions above, are for EA, Eb and EC. EC Startup time over The unit cannot finish startup process within 4 minutes after power on. Contact failure of Interface unit /Flow temp. controller-outdoor unit connecting wire Diameter or length of Interface unit/flow temp. controlleroutdoor unit connecting wire is out of specified capacity. Noise has entered into power supply or Interface unit/flow temp. controller-outdoor unit connecting wire. 0
<Abnormalities detected while unit is operating> Check code Abnormal point and detection method Case Judgment and action High pressure (High-pressure switch 5 Check water circuit and repair the defect. 63H activated) Abnormal if high-pressure switch 63H is activated (*) during compressor operation. *4.5 MPa U 63H: High-pressure switch Decreased water flow Clogged filter of water pipe 3 Dirt of plate heat exchanger 4 Locked water pump 5 Malfunction of water pump 6 Clogged or broken pipe 7 Locked outdoor fan motor 8 Malfunction of outdoor fan motor 9 Short cycle of outdoor unit 0 Dirt of outdoor heat exchanger Decreased airflow caused by defective inspection of outside temperature thermistor (It detects lower temperature than actual temperature.) Disconnection or contact failure of connector (63H) on outdoor controller board 3 Disconnection or contact failure of 63H connection 4 Defective outdoor controller board 5 Defective operation of linear expansion valve 6 Malfunction of fan driving circuit 6 Check piping and repair the defect. 7 0 Check outdoor unit and repair the defect. Check the detected temperature of outside temperature thermistor on LED display. (SW: Refer to "9-7. OUTDOOR UNIT OPERATI MITOR FUNCTI".) 4 Turn the power off and check F5 is displayed when the power is turned on again. When F5 is displayed, refer to Judgment and action for F5. 5 Check linear expansion valve. Refer to "9-5. HOW TO CHECK THE COMPENTS". 6 Replace outdoor controller board. U High discharge temperature Abnormal if discharge temperature thermistor (TH4) exceeds 5: or 0: continuously for 5 minutes. Abnormal if during defrosting discharge temperature thermistor (TH4) exceeds 0: continuously for 30 minutes. High comp. surface temperature Abnormal if comp. surface temperature (TH33) exceeds 5:. In the case of high comp. surface temperature error, compressor does not restart unless the thermistor (TH33) becomes less than 95:. Overheated compressor operation caused by insufficient refrigerant Defective thermistor 3 Defective outdoor controller board 4 Defective operation of linear expansion valve 5 In the case of the unit does not restart : Detection temp. of thermistor (TH33) ] 95: Check intake super heat. Check leakage of refrigerant. Charge additional refrigerant. 3 Turn the power off and check if U3 is displayed when the power is turned again. When U3 is displayed, refer to Judgment and action for U3. 4 Check linear expansion valve. Refer to "9-5. HOW TO CHECK THE COMPENTS". U3 Open/short circuit of discharge temperature thermistor (TH4)/comp. surface thermistor (TH33) Abnormal if open (3: or less) or short (7: or more) is detected during compressor operation. (Open (3: or less) detection is inoperative for 0 minutes of compressor starting process and for 0 minutes after or during defrosting.) Disconnection or contact failure of connector (TH4/TH33) on the outdoor controller circuit board. Defective thermistor 3 Defective outdoor controller circuit board Check connection of connector (TH4/TH33) on the outdoor controller circuit board. Check the lead wire for thermistor (TH4/TH33). Refer to "9-6. TEST POINT DIAGRAM". Check resistance value of thermistor (TH4/ TH33) or temperature on LED display. (Thermistor/TH4/TH33: Refer to "9-5. HOW TO CHECK THE COMPENTS".) (SW: Refer to "9-7. OUTDOOR UNIT OPERATI MITOR FUNCTI".) 3 Replace outdoor controller board.
Check code Abnormal point and detection method Case Judgment and action U4 Open/short of outdoor unit thermistors (TH3, TH3, TH6, TH7, and TH8) Abnormal if open or short is detected during compressor operation. Open detection of thermistors TH3, TH3 and TH6 is not detected for 0 seconds to 0 minutes after compressor starting and 0 minutes after and during defrosting. Note: Check which unit has abnormality in its thermistor by switching the mode of SW. (Refer to "9-7. OUTDOOR UNIT OPERATI MITOR FUNCTI".) Disconnection or contact failure of connectors Outdoor controller circuit board: TH3, TH3, TH6/TH7 Outdoor power circuit board: ( ) CN3 Defective thermistor 3 Defective outdoor controller circuit board Check connection of connector (TH3, TH3, TH6/TH7) on the outdoor controller circuit board. Check connection of connector (CN3) on the outdoor power circuit board. Check the lead wire for thermistor (TH3, TH3, TH6, TH7, TH8). Refer to "9-6. TEST POINT DIAGRAM". Check resistance value of thermistor (TH3, TH3, TH6, TH7, TH8) or check temperature on LED display. (Thermistor/TH3, TH3, TH6, TH7, TH8: Refer to "9-5. HOW TO CHECK THE COMPENTS".) (SW: Refer to "9-7. OUTDOOR UNIT OPERATI MITOR FUNCTI".) 3 Replace outdoor controller circuit board. U5 U6 U7 Symbol TH3 TH3 TH6 TH7 TH8 Thermistors Name Thermistor <Liquid> Thermistor <Inlet water> Thermistor <Plate HEX liquid> Thermistor <Ambient> Thermistor <Heat sink> Temperature of heat sink Abnormal if heat sink thermistor (TH8) detects temperature indicated below. W85V 77 C Power module Check abnormality by driving power module in case overcurrent is detected. (UF or UP error condition) Too low superheat due to low discharge temperature Abnormal if discharge superheat is continuously detected -5: or less for 3 minutes even though linear expansion valve has minimum open pulse after compressor starts operating for 0 minutes. The outdoor fan motor is locked. Failure of outdoor fan motor 3 Air flow path is clogged. 4 Ambient temperature is high. 5 Defective thermistor Open detection 40: or below 40: or below 40: or below 40: or below 35: or below 6 Defective input circuit of outdoor power circuit board 7 Failure of outdoor fan drive circuit Defective outdoor power circuit board Decrease of power supply voltage 3 Loosens, disconnection or reverse of compressor wiring connection 4 Defective compressor Disconnection or loose connection of discharge temperature thermistor (TH4) Defective holder of discharge temperature thermistor 3 Disconnection or loose connection of the coil of linear expansion valve 4 Disconnection or loose connection of the connector of linear expansion valve 5 Defective linear expansion valve Short detection 90: or above 0: or above 90: or above 90: or above 0: or above Check outdoor fan. 3 Check air flow path for cooling. 4 Check if there is something which causes temperature rise around outdoor unit. (Upper limit of ambient temperature is 46:.) Turn off power, and on again to check if U5 is displayed within 30 minutes. If U4 is displayed instead of U5, refer to check code U4. 5 Check resistance value of thermistor (TH8) or temperature by microcomputer. (Thermistor/TH8: Refer to "9-5. HOW TO CHECK THE COMPENTS".) (SW: Refer to "9-7. OUTDOOR UNIT OPERATI MITOR FUNCTI".) 6 Replace outdoor power circuit board. 7 Replace outdoor controller circuit board. Replace outdoor power circuit board. Check facility of power supply. 3 Correct the wiring (U V W phase) to compressor. Refer to "9-6. TEST POINT DIAGRAM" (Outdoor power circuit board). 4 Check compressor referring to "9-4. HOW TO CHECK THE PARTS". Check the installation conditions of discharge temperature thermistor (TH4). 3 Check the coil of linear expansion valve. Refer to "9-5. HOW TO CHECK THE COMPENTS". 4 Check the connection or contact of LEV-A and LEV-B on outdoor controller circuit board. 5 Check linear expansion valve. Refer to "9-4. HOW TO CHECK THE PARTS". U8 Outdoor fan motor Abnormal if rotational frequency of the fan motor is not detected during DC fan motor operation. Fan motor rotational frequency is abnormal if; 00 rpm or below detected continuously for 5 seconds at 0: or more outside air temperature 50 rpm or below or 500 rpm or more detected continuously for minute. Failure in the operation of the DC fan motor Failure in the outdoor circuit controller board Check or replace the DC fan motor. Check the voltage of the outdoor circuit controller board during operation. 3 Replace the outdoor circuit controller board. (when the failure is still indicated even after performing the remedy above.)
Check Code Abnormal point and detection method Case Judgment and action Detailed codes 0 0 To find out the details about U9 error, turn SW-, -, -3, -4, -5 and -6 when U9 error occurs. To find out the detail history (latest) about U9 error, turn SW-, - and -6. Refer to "9-7. OUTDOOR UNIT OPERATI MITOR FUNCTI". Overvoltage error Increase in DC bus voltage to 400 V Undervoltage error Instantaneous decrease in DC bus voltage to 00 V Abnormal increase in power source voltage Disconnection of compressor wiring 3 Defective outdoor power circuit board 4 Defective ACT module 5 Compressor has a ground fault. Decrease in power source voltage, instantaneous stop. Disconnection or loose connection of CNAF on the outdoor power circuit board/act module 3 Disconnection or loose connection of CN5C on the outdoor noise filter circuit board/controller circuit board 4 Defective ACT module drive circuit in outdoor power circuit board 5 Defective ACT module 6 Defective 5C drive circuit in outdoor noise filter circuit board 7 Disconnection or loose connection of CN in outdoor power circuit board/ controller circuit board 8 Power circuit failure on DC supply for 8V DC output on outdoor controller circuit board Check the field facility for the power supply. Correct the wiring (U. V. W phase) to compressor. Refer to "9-6. TEST POINT DIAGRAM" (Outdoor power circuit board). 3 Replace outdoor power circuit board. 4 Replace ACT module 5 Check compressor for electrical insulation. Replace compressor. Check the field facility for the power supply. Check CNAF wiring. 3 Check CN5 wiring. 4 Replace outdoor power circuit board. 5 Replace ACT module. 6 Replace outdoor noise filter circuit board. 7 Check CN wiring. 8 Replace outdoor controller circuit board. U9 04 08 0 0 Input current sensor error Decrease in input current through outdoor unit to 0. A only if operation frequency is more than or equal to 40 Hz or compressor current is more than or equal to 6 A. Abnormal power synchronous signal No input of power synchronous signal to power circuit board Power synchronous signal of 44 Hz or less, or 65 Hz or more is detected on power circuit board. PFC error (Overvoltage/ Undervoltage/Overcurrent) PFC detected any of the following a) Increase of DC bus voltage to 40 V b) Decrease in PFC control voltage to V DC or lower c) Increase in input current to 50A peak (For models equipped with single-phase PFC only) ACTM error (Undervoltage) When Compressor is running, DC bus voltage stays at 30 V or lower for consecutive 0 seconds. Disconnection or loose connection of CN5 on the outdoor power circuit board/ CNCT on the outdoor noise filter board Defective ACCT (AC current trans) on the outdoor noise filter circuit board 3 Defective input current detection circuit in outdoor power circuit board 4 Defective outdoor controller circuit board Distortion of power source voltage, Noise superimposition. Disconnection or loose connection of earth wiring 3 Disconnection or loose connection of CN on the outdoor power circuit board /controller circuit board 4 Defective power synchronous signal circuit in outdoor controller circuit board 5 Defective power synchronous signal circuit in outdoor power circuit board Not applicable for W85VHA(R) models. Incorrect switch settings on the outdoor controller circuit board for model select Disconnection or loose connection of CNAF on the outdoor power circuit board/act module 3 Defective ACT module drive circuit of outdoor power circuit board 4 Defective ACT module 5 Disconnection or loose connection of CN on the outdoor power circuit board/controller circuit board 6 Power circuit failure on DC supply for 8 V DC output on outdoor controller circuit board Check CN5/CNCT wiring. Replace outdoor noise filter circuit board. 3 Replace outdoor power circuit board. 4 Replace outdoor controller circuit board. Check the field facility for the power supply. Check earth wiring. 3 Check CN wiring. 4 Replace outdoor controller circuit board. 5 Replace outdoor power circuit board. Check for the switch settings for model select on the outdoor controller circuit board. Correction of a model select Check CNAF wiring. 3 Replace outdoor power circuit board. 4 Replace ACT module. 5 Check CN wiring. 6 Replace outdoor controller circuit board. 3
Check Code Abnormal point and detection method Case Judgment and action Ud UF UH UP E0 or E4 Overheat protection Abnormal if outdoor pipe thermistor (TH3) detects 70: or more or condensing temperature of pressure sensor (63HS) detects 70: or more during compressor operation. Compressor overcurrent interruption (When compressor locked) Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating. Current sensor error or input current error Abnormal if current sensor detects.0 A to.0 A during compressor operation. (This error is ignored during test run.) Compressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds. Remote controller transmission error (E0)/signal receiving error (E4) Abnormal if main or sub remote controller cannot receive any transmission normally from Interface unit/flow temp. controller of refrigerant address 0 for 3 minutes. (Check code: E0) Abnormal if sub-remote controller could not receive any signal for minutes. (Check code: E0) Abnormal if Interface/Flow temp. controller board cannot receive any data normally from remote controller board or from other Interface/Flow temp. controller board for 3 minutes. (Check code: E4) Interface/Flow temp. controller board cannot receive any signal from remote controller for minutes. (Check code: E4) Defective outdoor fan (fan motor) or short cycle of outdoor unit during cooling operation Defective outdoor pipe thermistor (TH3) 3 Defective outdoor controller board 4 Defective pressure sensor Decrease of power supply voltage Looseness, disconnection or converse of compressor wiring connection 3 Defective compressor 4 Defective outdoor power board 5 Decreased water flow 6 Clogged filter of water pipe 7 Clogged plate heat exchanger 8 Locked water pump 9 Malfunction of water pump Disconnection of compressor wiring Defective circuit of current sensor on outdoor power circuit board 3 Decrease of power supply voltage 4 Leakage or shortage of refrigerant Decrease of power supply voltage Looseness, disconnection or converse of compressor wiring connection 3 Defective fan of outdoor units 4 Short cycle of indoor/outdoor units 5 Defective input circuit of outdoor controller board 6 Defective compressor 7 Decreased water flow 8 Clogged filter of water pipe 9 Clogged plate heat exchanger 0 Locked water pump Malfunction of water pump Contact failure at transmission wire of remote controller All remote controllers are set as sub remote controller. In this case, E0 is displayed on remote controller, and E4 is displayed at LED (LED, LED) on the outdoor controller circuit board. Miswiring of remote controller Defective transmitting receiving circuit of remote controller Noise has entered into the transmission wire of remote controller. Check outdoor unit air passage. 3 Turn the power off and on again to check the check code. If U4 is displayed, follow the U4 processing direction. 4 Check pressure by microcomputer. (Pressure sensor/ 63HS) (SW: Refer to "9-7. OUTDOOR UNIT OPERATI MITOR FUNCTI".) Check facility of power supply. Correct the wiring (U V W phase) to compressor. Refer to "9-6. TEST POINT DIAGRAM" (Outdoor power circuit board). 3 Check compressor. Refer to "9-4. HOW TO CHECK THE PARTS". 4 Replace outdoor power circuit board. 5 9 Check water circuit and repair the defect. Correct the wiring (U V W phase) to compressor. Refer to "9-6. TEST POINT DIAGRAM" (Outdoor power circuit board). Replace outdoor power circuit board. 3 Check the facility of power supply. 4 Check leakage of refrigerant. Check facility of power supply. Correct the wiring (U V W phase) to compressor. Refer to "9-6. TEST POINT DIAGRAM" (Outdoor power circuit board). 3 Check outdoor fan. 4 Solve short cycle. 5 Replace outdoor controller circuit board. 6 Check compressor. Refer to "9-4. HOW TO CHECK THE PARTS". Note: Before the replacement of the outdoor controller circuit board, disconnect the wiring to compressor from the outdoor power circuit board and check the output voltage among phases, U, V, W, during test run. No defect on board if voltage among phases (U-V, V-W and W-U) is same. Make sure to perform the voltage check with same performing frequency. 7 Check water circuit and repair the defect. Check disconnection or looseness of Interface unit/flow temp. controller unit or transmission wire of remote controller. Set one of the remote controllers main, If there is no problem with the action above. Check wiring of remote controller. Refer to the indoor unit's Installation Manual for remote controller connection. If the cause of trouble is not in above, Diagnose remote controllers. a) When RC OK is displayed, remote controllers have no problem. Turn the power off, and on again to check. If abnormality generates again, replace Interface/Flow temp. controller board. b) When RC NG is displayed, replace remote controller. c) When RC E3 or ERC 00-66 is displayed, noise may be causing abnormality. E or E Remote controller control board Abnormal if data cannot be read normally from the nonvolatile memory of the remote controller control board. (Check code: E) Abnormal if the clock function of remote controller cannot be operated normally. (Check code: E) Defective remote controller Replace remote controller. 4
Check code Abnormal point and detection method Case Judgment and action E3 or E5 E6 Remote controller transmission error (E3)/signal receiving error (E5) Abnormal if remote controller could not find blank of transmission path for 6 seconds and could not transmit. (Check code: E3) When remote controller receives the transmitted data same time and compares these data. Abnormal if the data is judged to be different for 30 continuous times. (Check code: E3) Abnormal if Interface/Flow temp. controller board could not find blank of transmission path. (Check code: E5) When Interface/Flow temp. controller receives the transmitted data same time and compares these data. Abnormal if the data is judged to be different for 30 continuous times. (Check code: E5) Interface unit/flow temp. controlleroutdoor unit communication error (Signal receiving error) Abnormal if Interface/Flow temp. controller board cannot receive any signal normally for 6 minutes after turning the power on. Abnormal if Interface/Flow temp. controller board cannot receive any signal normally for 3 minutes. remote controllers are set as main. (In case of remote controllers) Defective transmitting receiving circuit of remote controller 3 Defective transmitting receiving circuit of Interface/Flow temp. controller board 4 Noise has entered into transmission wire of remote controller. Contact failure, short circuit or, miswiring (converse wiring) of Interface unit/flow temp. controller-outdoor unit connecting wire Defective transmitting receiving circuit of Interface/Flow temp. controller board 3 Defective transmitting receiving circuit of Interface/Flow temp. controller board 4 Noise has entered into Interface unit/flow temp. controlleroutdoor unit connecting wire. Set a remote controller to main, and the other to sub. 4 Diagnose remote controller. a) When RC OK is displayed, remote controllers have no problem. Turn the power off, and on again to check. When becoming abnormal again, replace indoor controller board. b) When RC NG is displayed, replace remote controller. c) When RC E3 or ERC 00-66 is displayed, noise may be causing abnormality. Note: Check LED display on the outdoor control circuit board. (Connect A-control service tool, PAC-SK5ST.) Check disconnection or looseness of Interface unit/flow temp. controller-outdoor unit connecting wire of Interface unit/flow temp. controller or outdoor unit. 4 Turn the power off, and on again to check. If abnormality generates again, replace Interface/Flow temp. controller board or outdoor controller circuit board. E8 Interface unit/flow temp. controlleroutdoor unit communication error (Signal receiving error) (Outdoor unit) () Abnormal if outdoor controller circuit board could not receive anything normally for 3 minutes. Contact failure of Interface unit/ Flow temp. controller-outdoor unit connecting wire Defective communication circuit of outdoor controller circuit board 3 Defective communication circuit of Interface/Flow temp. controller board 4 Noise has entered into Interface unit/flow temp. controlleroutdoor unit connecting wire. Check disconnection or looseness of Interface unit/flow temp. controller-outdoor unit connecting wire of Interface unit/flow temp. controller or outdoor unit. 4 Turn the power off, and on again to check. Replace Interface/Flow temp. controller board or outdoor controller circuit board if abnormality is displayed again. E9 EF Ed Interface unit/flow temp. controlleroutdoor unit communication error (Transmitting error) (Outdoor unit) () Abnormal if 0 receiving is detected 30 times continuously though outdoor controller circuit board has transmitted. () Abnormal if outdoor controller circuit board could not find blank of transmission path for 3 minutes. Non defined check code This code is displayed when non defined check code is received. Serial communication error Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective. Interface unit/flow temp. controller-outdoor unit connecting wire has contact failure. Defective communication circuit of outdoor controller circuit board 3 Noise has entered power supply. 4 Noise has entered Interface unit/flow temp. controlleroutdoor unit connecting wire. Noise has entered transmission wire of remote controller. Noise has entered Interface unit/flow temp. controlleroutdoor unit connecting wire. Wire disconnection or contact failure of connector CN between the outdoor controller circuit board and the outdoor power circuit board Wire disconnection or contact failure of connector CN4 between the outdoor controller circuit board and the outdoor power circuit board 3 Defective communication circuit of outdoor power circuit board 4 Defective communication circuit of outdoor controller circuit board for outdoor power circuit board 5 Check disconnection or looseness of Interface unit/flow temp. controller-outdoor unit connecting wire. 4 Turn the power off, and on again to check. Replace outdoor controller circuit board if abnormality is displayed again. Turn the power off, and on again to check. Replace Interface/Flow temp. controller board or outdoor controller circuit board if abnormality is displayed again. Check connection of each connector CN and CN4 between the outdoor controller circuit board and the outdoor power circuit board. 3 Replace outdoor power circuit board. 4 Replace outdoor controller circuit board.
Check code Abnormal point and detection method Judgment and action Case P6 Freezing/overheating protection is working () Freezing protection <Cooling mode> Abnormal if plate heat exchanger pipe temperature thermistor (TH6) stays at 5: or lower for 0 seconds or abnormal if plate heat exchanger pipe thermistor (TH6) stays at : or lower and compressor operation frequency is minimum for 5 minutes after compressor starts operating for 6 minutes. <Heating mode> Abnormal if inlet water temperature thermistor (TH3) is 5: or lower, and the following condition ( or ) are detected.. minute has passed since defrosting operation started and plate heat exchanger pipe temperature thermistor (TH6) stays at 6: or lower for continuously 30 seconds.. During defrosting operation and plate heat exchanger pipe temperature thermistor (TH6) stays at 6: or lower for continuously 0 seconds. () Overheating protection <Heating mode> Abnormal if condensing temperature of pressure sensor (63HS) detects Tcond. : or more and compressor operation frequency is less than or equal to 30 Hz. Detection is inoperative during defrosting. () Freezing protection <Cooling mode> Reduced water flow Clogged filter Leakage of water Low temperature Low-load Inlet water is too cold. 3 Defective water pump 4 Defective outdoor fan control 5 Overcharge of refrigerant 6 Defective refrigerant circuit (clogs) 7 Malfunction of linear expansion valve <Heating mode> Reduced water flow Clogged filter Leakage of water Low temperature Low-load Inlet water is cold. 3 Defective water pump 4 Leakage or shortage of refrigerant 5 Malfunction of liner expansion valve () Over heating protection <Heating mode> Reduced water flow Clogged filter Leakage of water High temperature Over-load Inlet water is too warm. 3 Defective water pump 4 Overcharge of refrigerant 5 Defective refrigerant circuit (clogs) 6 Malfunction of liner expansion valve () Freezing protection <Cooling mode> Check water piping. 3 Check water pump. 4 Check outdoor fan motor. 5 7 Check operating condition of refrigerant circuit. 7 Check linear expansion valve. <Heating mode> Check water piping. 3 Check water pump. 4 Correct to proper amount of refrigerant. 5 Check linear expansion valve. Refer to "9-5. HOW TO CHECK THE COMPENTS". () Over heating protection <Heating mode> Check water piping. 3 Check water pump. 45 Check operating condition of refrigerant circuit. 6 Check liner expansion valve. stage-g stage-f Tcond stage-e stage-d stage-c stage-b stage-a stage-s 9 8 6 5 3 0 8 7 3 Ambient temperature (TH7) [ :] 7 8 Tcond stage-a stage-b stage-c stage-d stage-e stage-f stage-g 63 6 59 57 54 5 48 stage-s 6 P8 Pipe temperature Abnormal if the following conditions are detected for continuously 3 minutes after compressor starts operating for 0 minutes.. Cooling mode T63HS TH7 [ : and TH3 TH7 [ 4: or T63HS TH3 < 0: and TH3 TH6 [ 0: and Compressor operation frequency is 6 Hz or more.. Heating mode T63HS TH3 [ : and TH6 TH3 [ : and TH7 TH3 [ : and Compressor operation frequency is 6 Hz or more. T63HS: Condensing temperature of pressure sensor (63HS) Thermistor TH3: Liquid temperature TH3: Inlet water temperature TH6: Plate HEX Liquid temperature TH7: Ambient temperature Leakage or shortage of refrigerant Malfunction of linear expansion valve 3 Refrigerant circuit is clogged with foreign objects. Note: Clogging occurs in the parts which become below freezing point when water enters in refrigerant circuit. 4 Disconnection of thermistor holder. Check intake superheat. Check leakage of refrigerant. Check linear expansion valve. 3 After recovering refrigerant, remove water from entire refrigerant circuit under vacuum more than hour. 4 Check temperature display on outdoor controller circuit board. Temperature display is indicated by setting SW of outdoor controller circuit board. Check the holder of thermistor. 6
Check code Abnormal point and detection method Judgment and action Case UE PE Abnormal pressure of pressure sensor (63HS) Abnormal if pressure sensor (63HS) detects 0. MPa or less. Detection is inoperative for 3 minutes after compressor starting and 3 minutes after and during defrosting. Inlet water temperature Abnormal if the following conditions are detected for continuously 0 seconds.. Cooling mode During compressor operation TH3 < 3:. Heating mode (exclude defrosting) During compressor operation TH3 < -0: 3. Defrosting mode During compressor operation TH3 < 0: Thermistor TH3: Inlet water temperature Disconnection or contact failure of connector (63HS) on the outdoor controller circuit board Defective pressure sensor 3 Defective outdoor controller circuit board Reduced water flow Clogged filter Leak of water Low temperature Low-load Low temperature inlet water 3 Defective water pump 4 Leakage or shortage of refrigerant Check connection of connector (63HS) on the outdoor controller circuit board. Check breaking of the lead wire for thermistor (63HS). Check pressure by microcomputer. (Pressure sensor/ 63HS) (SW: Refer to "9-7. OUTDOOR UNIT OPERATI MITOR FUNCTI".) 3 Replace outdoor controller board. Check water piping. 3 Check water pump. 4 Check intake superheat. Check leakage of refrigerant. 7
9-4. HOW TO CHECK THE PARTS PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR5.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5-BS.UK Parts name Thermistor (TH3) <Liquid> Thermistor (TH4) <Discharge> Thermistor (TH6) <Plate Hex liquid> Thermistor (TH7) <Ambient> Thermistor (TH8) <Heat sink> Thermistor (TH3) <Inlet water> Thermistor (TH33) <Comp. surface> Fan motor (MF) Solenoid valve coil <4-way valve> (S4) Check points Disconnect the connector then measure the resistance with a tester. (At the ambient temperature of 0 to 30:) TH4/TH33 TH3 TH6 TH7 TH3 TH8 Normal 60 to 40 k" 4.3 to 9.6 k" 4.4 to 9.8 k" 39 to 05 k" Abnormal Open or short Refer to 9-4-. Check method of DC fan motor (fan motor/outdoor controller circuit board). Measure the resistance between the terminals with a tester. (At the ambient temperature of 0:) Normal 350 ± 70 " Abnormal Open or short Compressor (MC) U Measure the resistance between the terminals with a tester. (Winding temperature 0:) Normal Abnormal M Gray V W Linear expansion valve (LEV-A) (LEV-B) Orange Red Yellow Black 3 4 5 6 Solenoid valve coil <Bypass valve> (SV) 0.88 " Open or short Disconnect the connector then measure the resistance with a tester. (Winding temperature 0 C) Normal Gray - Black Gray - Red Gray - Yellow Gray - Orange 46 ± 3 Ω Measure the resistance between the terminals with a tester. (At the ambient temperature of 0:) Normal Abnormal 450 ± 50 " Open or short Abnormal Open or short 8
9-4-. Check method of DC fan motor (fan motor/outdoor controller circuit board) Notes High voltage is applied to the connector (CNF) for the fan motor. Pay attention to the service. Do not pull out the connector (CNF) of the motor with the power supply on. (It may damage the outdoor controller circuit board and fan motor.) Self check Symptom: The outdoor fan cannot rotate. Check fuse (F5) on outdoor controller circuit board. Is the fuse normal? Yes No Wiring contact check Check contact of fan motor connector (CNF) Is there contact failure? No Yes Replace the fan motor. Replace the outdoor controller circuit board. Recover wiring. <How to check the resistance> To measure the resistance, connect the negative( ) end of the tester to pin 4. UNIT W85VHA * W85VHA * FAN MOTOR RG6N769 RG6V43 Measuring points Resistance Pin pin 4 400 ~ 500 k" Pin 5 pin 4. k" 50k" Pin 6 pin 4 55 k" 50 k" Pin 7 pin 4 Power supply check Measure the voltage on the outdoor controller circuit. (Remove the connector CNF.) TEST POINT VDC 80 330 V DC (between (+) and 4 ( ) of CNF) VCC 5 V DC (between 5 (+) and 4 ( ) of CNF) Is the voltage normal? Yes Replace fan motor. No Check fan motor rotation. OK END Replace the outdoor controller circuit board. Fail Replace the outdoor controller circuit board. Check fan motor rotation. OK END Fail Replace the fan motor. 9
9-5. HOW TO CHECK THE COMPENTS <Thermistor feature chart> Low temperature thermistors Thermistor <Liquid> (TH3) Thermistor <Plate Hex liquid> (TH6) Thermistor <Ambient> (TH7) Thermistor R0 = 5 k" ± 3% B constant = 3480 ± % Rt =5exp{3480( 73+t 73 )} 0: 5 k" 0: 9.6 k" 0: 6.3 k" 5: 5. k" 30: 4.3 k" 40: 3.0 k" Resistance (k") 50 40 30 0 0 0-0 -0 0 0 0 30 40 50 Temperature (:) Medium temperature thermistor Thermistor <Heat sink> (TH8) Thermistor R50 = 7 k" ± % B constant = 450 ± 3% Rt =7exp{450( 73+t 33 )} 0: 80 k" 5: 50 k" 50: 7 k" 70: 8 k" 90: 4 k" Resistance (k") 00 50 00 50 0 5 50 75 00 5 Temperature (:) High temperature thermistor Thermistor <Discharge> (TH4) Thermistor <Comp. surface> (TH33) Thermistor R0 = 7.465 k" ± % B constant = 4057 ± % Rt =7.465exp{4057( 73+t 393 )} 0: 50 k" 30: 60 k" 40: 04 k" 50: 70 k" 60: 48 k" 70: 34 k" 80: 4 k" 90: 7.5 k" 00: 3.0 k" 0: 9.8 k" Resistance (k") 500 400 300 00 00 0 5 50 75 00 0 Temperature (:) 30
Low temperature thermistor Thermistor <Inlet water> (TH3) Thermistor R0 = 5 k" ±.5% B constant = 3450 ± % Rt =5exp{3450( 73+t 73 )} 0: 5 k" 0: 9.6 k" 0: 6.3 k" 5: 5. k" 30: 4.3 k" 40: 3.0 k" Resistance (k") 50 40 30 0 0 0-0 -0 0 0 0 30 40 50 Temperature(:) <HIGH PRESSURE SENSOR> Vout (V) 4.5.5 SENSOR Vout WHT BLU BLK CTROLLER BOARD 5 V DC 3 MICRO PROCESSOR 0.5 63HS GND.5 5 PRESSURE (MPa) 3- : 5 V (DC) - : Output Vout (DC) 3
Linear expansion valve () Operation summary of the linear expansion valve Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the outdoor controller board. Valve position can be changed in proportion to the number of pulse signal. <Connection between the outdoor controller board and the linear expansion valve> Outdoor controller board DCV LEV 3 Gray Drive circuit M Orange 3 6 5 4 Red Yellow 4 5 Black 6 Connector LEV-A LEV-B <Output pulse signal and the valve operation> Output (Phase) 3 Output 3 4 5 6 7 8 OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF Opening a valve : 8 7 6 5 4 3 8 Closing a valve : 3 4 5 6 7 8 The output pulse shifts in above order. When linear expansion valve operation stops, all output phases become OFF. 4 OFF OFF OFF OFF OFF () Linear expansion valve operation Valve position (capacity) Close Open When the power is turned on, 700 pulse closing valve signal will be sent till it goes to point in order to define the valve position. (The pulse signal is being sent for about 0 seconds.) When the valve moves smoothly, there is no sound or vibration occurring from the linear expansion valve: however, when the pulse number moves from to or when the valve is locked, sound can be heard. No sound is heard when the pulse number moves from to in case coil is burnt out or motor is locked by open-phase. Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve. 500 pulse Opening a valve all the way Extra tightening (about 3 pulse) Pulse number 3
(3) How to attach and detach the coil of linear expansion valve <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Coil Stopper Main body Lead wire <How to detach the coil> Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward. Be sure to detach the coil holding main body firmly. Otherwise pipes can bend due to stress. A <How to attach the coil> Hold the lower part of the main body (shown as A) firmly so that the main body does not move and attach the coil by inserting it downward into the main body. Then securely attach the coil stopper to main body. (At this time, be careful that stress is not added to lead wire and main body is not wound by lead wire.) If the stopper is not firmly attached to main body, coil may be detached from the main body and that can cause defective operation of linear expansion valve. To prevent piping stress, be sure to attach the coil holding the main body of linear expansion valve firmly. Otherwise pipe may break. Be sure to attach the stopper. A 33
9-6. TEST POINT DIAGRAM Outdoor controller circuit board PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR5.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5-BS.UK <CAUTI> TEST POINT is high voltage. CNS S S: 30 V AC VCC (TEST POINT ) VDC (TEST POINT ) 63H (voltage between pins of C6B): 5 V DC High pressure switch (voltage between pins of C5E) : 80 330 V DC + Communication + power supply D7 Voltage 4 V DC CNDC } 80 380 V DC Connect from outdoor power circuit board. VSP (voltage between pins of C5B): 0 V DC (when stopped), 6.5 V DC (when operated) CNAC 4: Power supply for outdoor controller circuit board (30 V AC) 3: Power supply for interface unit/flow temp. controlleroutdoor unit connection wire (30 V AC) VFG (voltage between right pins of PC5D, pin 3 and pin 4) TH33 Thermistor <Comp. surface> TH3 Thermistor <Inlet water> CN TH6 Connect to the outdoor power circuit board (CN). 5: Power circuit board Transmitting signal to the controller circuit board (0 5 V DC) 5: Zero cross signal (0 5 V DC) 3 4: 8 V DC 6 5: 6 V DC 7 5: 6 V DC [5:,,6,7: + ] Thermistor <Plate Hex liquid> TH7 <Ambient> TH3 Thermistor <Liquid> TH4 Thermistor <Discharge> 63HS High pressure sensor LEV-A,-B S4 Linear expansion valve 4-way valve SV Bypass valve SV Drain hose heater output SW8 CN4 Function switch Transmission to outdoor power circuit board (CN4) SW5 Function switch Model select SW6 Model select SW Forced defrost, detect history record reset CN5C Connect to the outdoor noise filter circuit board (CN5C) CNDM :Input of low level sound priority mode SW0 Model select 34 SW Operation monitor function SW7 Function switch
Outdoor noise filter circuit board PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5.UK PUHZ-W85VHAR5-BS.UK LO, NO Voltage of 30 V AC is output. Connect to the outdoor power circuit board (TABS, TABT) CNAC, CNAC 30 V AC Connect to the outdoor controller circuit board (CNAC) E Connect to the earth EI Connect to the earth CN5 Input current Connect to the outdoor power circuit board (CN5) LI, NI Voltage of 30 V AC is input. Connect to the terminal block (TB) 35
Outdoor power circuit board PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR5.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5-BS.UK Brief Check of POWER MODULE Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.. Check of diode bridge TABP-TABS, TABN-TABS, TABP-TABT, TABN-TABT. Check of DIP-IPM P-U, P-V, P-W, N-U, N-V, N-W CN Connect to the outdoor controller circuit board (CN) 5: Transmitting signal to the outdoor controller circuit board (0 5 V DC) 5: Zero cross signal (0 5 V DC) 3, 4: 8 V DC 6 5: 6 V DC 7 5: 6 V DC CNAF Connect to ACTM DIP-IPM CNDC 80 380 V DC (+, 3 ) Connect to the outdoor controller circuit board TABS/TABT Connect to the outdoor noise filter circuit board Voltage among phases: 30 V AC CN3 Thermistor (TH8) <Heat sink> CN5 Detection of input current Connect to the outdoor noise filter circuit board (CN5) CN4 Connect to the outdoor controller circuit board (CN4) TABP * Connect to ACTM + TABN * Connect to ACTM TABP Connect to the ACTM * Voltage between TABP and TABN:07VDC TABU/V/W Connect to the compressor (MC) Voltage among phases: 0 80 V AC TABN Connect to ACTM 36
Active filter module PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5.UK PUHZ-W85VHAR5-BS.UK P * Connect to the outdoor power circuit board (TABP) L, L Connect to the DCL (Reactor) N Non-connect Upper side Lower side + * Connect to the outdoor power circuit board (TABP) N Non-connect Connection and internal circuit diagram * Connect to the outdoor power circuit board (TABN) Connect to the outdoor power circuit board (CNAF) : GND : 5 V DC 3 : Control signal 4, 5 : Not used 6 : Control signal DCL L L ACTM lo * Connect to the outdoor power circuit board (TABN) * Voltage between and : 07VDC * Voltage between P and Io: 80-380VDC (+) P (-) Tester check points of Active filter module Error condition Normal value (reference) Symptom when the unit is in trouble ( ) and Io open less than " The unit does not operate (cannot be switched ) ( ) and L short 00 k" to M" The breaker operates open * The unit does not operate (cannot be switched ) U9 Abnormal stop (*) P and L short 00 k" to M" The breaker operates open * The unit does not operate (cannot be switched ) U9 Abnormal stop (*) P and Io short 00 k" to M" The breaker operates open * The unit does not operate (cannot be switched ) U9 Abnormal stop (*) L and Io short 00 k" to M" The breaker operates open * The unit does not operate (cannot be switched ) U9 Abnormal stop (*) * The symptom when the unit is in open error condition is described to determine open error by tester check. * SW setting : Code "0" display OFF 6 37 N N Io + Load
9-7. Outdoor unit operation monitor function Operation indicator SW setting Display detail Explanation for display Unit SW: Indicator change of self diagnosis 3 4 5 6 <Digital indicator LED3 working details> (Be sure that the to 6 in the SW are set to OFF.) () Display when the power supply is. When the power supply is, blinking displays by turns. Wait for 0 seconds at the longest. () When the display lights (Normal operation) Operation mode display second interval LED3 (Lighting) SW (Initial setting) 3 4 5 6 The tens digit : Operation mode Display Operation Model O C H d OFF COOLING HEATING DEFROSTING Display during error postponement Postponement code is displayed when compressor stops due to the work of protection device. Postponement code is displayed while error is being postponed. The ones digit : Relay output Display Warming-up Compressor Compressor 4-way valve Solenoid valve 0 3 4 5 6 7 8 A (3) When the display blinks Inspection code is displayed when compressor stops due to the work of protection devices. Display Inspection unit 0 Outdoor unit Display U U U3 U4 U5 U6 U7 U8 U9 Ud UF UH UP P6 P8 UE PE Ed Contents to be inspected (During operation) Abnormal high pressure (63H operated) Abnormal high discharging/high comp. surface temperature, shortage of refrigerant Open/short circuit of discharge thermistor (TH4, TH33) Open/short of outdoor unit thermistors (TH3, TH3, TH6, TH7 and TH8) Abnormal temperature of heat sink Abnormality of power module Abnormality of superheat due to low discharge temperature Abnormality in outdoor fan motor Voltage fault, Input current sensor error Overheat protection Compressor overcurrent interruption (When Comp. locked) Current sensor error, Input overcurrent interruption Compressor overcurrent interruption Freezing/overheating protection is working. Abnormality of pipe temperature Abnormal pressure of pressure sensor Abnormality of inlet water temperature Serial communication error Display Contents to be inspected (When power is turned on) F5 E8 E9 EA Eb EC E0 E7 63H connector (yellow) is open. Interface unit/flow temp. controller-outdoor communication error (Signal receiving error) (Outdoor unit) Interface unit/flow temp. controller-outdoor communication error (Transmitting error) (Outdoor unit) Miswiring of Interface unit/flow temp. controller-outdoor unit connecting wire, excessive number of indoor units ( units or more) Miswiring of Interface unit/flow temp. controller-outdoor unit connecting wire (converse wiring or disconnection) Startup time over Communication error except for outdoor unit 38
SW setting 3 4 5 6 Display detail Explanation for display Unit Pipe temperature/liquid (TH3) 40 to 90 40 to 90 (When the coil thermistor detects 0: or below, and temperature are displayed by turns.) (Example) When 0:; 0.5 s 0.5 s s 0 : 3 4 5 6 Discharge temperature (TH4) 3 to 7 3 to 7 (When the discharge thermistor detects 00: or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 05:; 0.5 s 0.5 s s 05 : Fan steps 0 to 0 0 to 0 Step 3 4 5 6 3 4 5 6 Compressor /OFF 0 to 9999 0 to 9999 (When the number of times is 00 or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 4500 times (45 00 times); 0.5 s 0.5 s s 4 5 00 times 3 4 5 6 Compressor accumulated operation hours 0 to 9999 0 to 9999 (When it is 00 hours or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 450 hours (45 0 hours); 0.5 s 0.5 s s 45 0 hours 3 4 5 6 Compressor running current 0 to 50 0 to 50 Note: Value after the decimal point will be truncated. A 3 4 5 6 Compressor running frequency 0 to 55 0 to 55 (When it is 00 Hz or more, hundreds digit, tens digit and ones digit are displayed by turns. (Example) When 05 Hz; 0.5 s 0.5 s s 05 Hz 3 4 5 6 LEV-A opening pulse 0 to 500 0 to 500 (When it is 00 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns. (Example) When 50 pulse; 0.5 s 0.5 s s 50 Pulse 3 4 5 6 Deferred error history () Deferred error Blinking: being deferred Lighting: deferment is cancelled 00 is displayed in case of no deferment Code display 3 4 5 6 Operation mode when the error occurred. Operation mode when the unit is stopped due to an error is displayed. The displayed code is when the SW is set as below. (SW) 3 4 5 6 Code display 39
SW setting 3 4 5 6 Display detail Explanation for display Unit Pipe temperature/liquid (TH3) when error occurred. 40 to 90 40 to 90 (When the coil thermistor detects 0: or below, and temperature are displayed by turns.) (Example) When 5:; 0.5 s 0.5 s s 5 : 3 4 5 6 Discharge temperature (TH4) when error occurred. 3 to 7 3 to 7 (When the temperature is 00: or more, the hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 30:; 0.5 s 0.5 s s 30 : Compressor current when error occurred. 0 to 50 0 to 50 A 3 4 5 6 3 4 5 6 Error history () (latest) Alternate display of faulty unit number and check code When no error history, 0 and are displayed by turns. Code display 3 4 5 6 Error history () Alternate display of faulty unit number and check code When no error history, 0 and are displayed by turns. Code display 3 4 5 6 Compressor operation duration 0 to 999 0 to 999 (When it is 00 minutes or more, the hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 45 minutes; 0.5 s 0.5 s s 45 Minute 3 4 5 6 LEV-B opening when error occurred 0 to 500 (When it is 00 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns. (Example) When 50 pulse; 0.5 s 0.5 s s 50 Pulse Capacity settings The outdoor capacity code is shown as below 3 4 5 6 Model PUHZ-W85 Code 4 Code display 40
SW setting Display detail Explanation for display Unit Outdoor unit setting information The tens digit (Total display for applied setting) Setting details Display details 3 4 5 6 H P / Cooling only Single phase / 3 phase The ones digit Setting details 0 : H P : Cooling only 0 : Single phase : 3 phase Display details Defrosting switch 0 : Normal : For high humidity (Example) When heat pump, 3 phase and defrosting (normal) are set up, 0 is displayed. Code display 3 4 5 6 Plate HEX liquid pipe temperature (TH6) 39 to 88 39 to 88 (When the temperature is 0: or less, and temperature are displayed by turns.) : Condensing temperature (T63HS) 39 to 88 39 to 88 (When the temperature is 0: or less, and temperature are displayed by turns.) : 3 4 5 6 3 4 5 6 Calculated maximum frequency 0 to 50 0 to 50 (When it is 00 Hz or more, hundreds digit, tens digit and ones digit are displayed by turns. (Example) When 05 Hz; 0.5 s 0.5 s s Hz 05 Water inlet temperature (TH3) 0 to 00 0 to 00 : 3 4 5 6 Ambient temperature (TH7) 39 to 88 39 to 88 (When the temperature is 0: or less, and temperature are displayed by turns.) : 3 4 5 6 3 4 5 6 Outdoor heat sink temperature (TH8) 40 to 00 40 to 00 (When the temperature is 0: or less, and temperature are displayed by turns.) (When the thermistor detects 00: or more, hundreds digit, tens digit and ones digit are displayed by turns.) : 3 4 5 6 Discharge superheat (SHd) 0 to 55 Cooling and Heating: SHd = TH4 T63HS 0 to 55 (When the SHd is 00 C or more, hundreds digit, tens digit and ones digit are displayed by turns.) C 4
SW setting Display detail Explanation for display Unit Sub cool (SC) 0 to 30 Cooling: SC = T63HS TH3 Heating: SC = T63HS TH6 0 to 30 (When the SC is 00 C or more, hundreds digit, tens digit and ones digit are displayed by turns.) C 3 4 5 6 <VHAR/R3/R4/R5(-BS) only> Number of defrost cycles 0 to FFFE 0 to FFFE (in hexadecimal notation) (When more than FF in hex (55 in decimal), the number is displayed in order of 6 3 's and 6 's, and 6 's and 6 0 's places. (Example) When 5000 cycles; 0.5 s 0.5 s s 9 C4 cycles 3 4 5 6 Input current of outdoor unit 0 to 500 0 to 500 (When it is 00 or more, hundreds digit, tens digit and ones digit are displayed by turns.) 0. A 3 4 5 6 LEV-B opening pulse 0 to 500 0 to 500 (When it is 00 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.) Pulse 3 4 5 6 U9 error detail history (latest) Error details (No error) Over voltage Under voltage Input current sensor error Abnormal power synchronous signal ACTM error Code 00 0 0 04 08 0 Code display Display examples for multiple errors: Overvoltage (0) + Undervoltage (0) = 03 Undervoltage (0) + Power-sync signal error (08) = 0A Input current sensor error (04) + ACTM error (0) = 4 DC bus voltage 50 to 400 50 to 400 (When it is 00 V or more, hundreds digit, tens digit and ones digit are displayed by turns.) 3 4 5 6 V 3 4 5 6 Deferred error history () of outdoor unit Deferred check code display Blinking: being deferred Lighting: deferment is cancelled 00 is displayed in case of no deferment. Code display 3 4 5 6 Deferred error history (3) of outdoor unit Deferred check code display Blinking: being deferred Lighting: deferment is cancelled 00 is displayed in case of no deferment. Code display 4
SW setting Display detail Explanation for display Unit 3 4 5 6 Error history (3) (Oldest) Faulty unit number and check code are displayed alternately. When no error history, 0 and are displayed by turns. Code display 3 4 5 6 Error thermistor display 3: Liquid thermistor (TH3) 3: Water inlet temp. thermistor (TH3) When there is no error thermistor, is displayed. 6: Plate HEX liquid thermistor (TH6) 7: Ambient temp. thermistor (TH7) 8: Heat sink thermistor (TH8) 4: Discharge thermistor (TH4) 33: Comp. surface thermistor (TH33) Code display 3 4 5 6 Operation frequency when error occurred 0 to 5 0 to 5 (When it is 00 Hz or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 05 Hz; 0.5 s 0.5 s s 05 Hz Fan step when error occurred 0 to 0 0 to 0 Step 3 4 5 6 3 4 5 6 LEV-A opening pulse when error occurred 0 to 500 0 to 500 (When it is 00 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 30 pulse; 0.5 s 0.5 s s 30 Pulse 3 4 5 6 Plate HEX liquid pipe temperature (TH6) when error occurred 39 to 88 39 to 88 (When the temperature is 0 C or less, and temperature are displayed by turns.) (Example) When 5 C; 0.5 s 0.5 s s 5 : 3 4 5 6 Condensing temperature when error occurred 39 to 88 39 to 88 (When the temperature is 0 C or less, and temperature are displayed by turns.) (Example) When 5 C; 0.5 s 0.5 s s 5 : 3 4 5 6 Water inlet temperature (TH3) when error occurred 0 to 00 0 to 00 : 3 4 5 6 Ambient temperature (TH7) when error occurred 39 to 88 39 to 88 (When the temperature is 0 C or less, and temperature are displayed by turns.) (Example) When 5 C; 0.5 s 0.5 s s 5 : 43
SW setting Display detail Explanation for display Unit 3 4 5 6 Outdoor heat sink temperature (TH8) when error occurred 40 to 00 40 to 00 (When the temperature is 0 C or less, and temperature are displayed by turns.) (When the temperature is 00 C or more, hundreds digit, tens digit and ones digit are displayed by turns.) : 3 4 5 6 Discharge superheat (SHd) when error occurred 0 to 55 Cooling and Heating: SHd=TH4 T63HS 0 to 55 (When the temperature is 00 C or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 50 C; 0.5 s 0.5 s s 50 : 3 4 5 6 Sub cool (SC) when error occurred 0 to 30 Cooling: SC = T63HS TH3 Heating: SC = T63HS TH6 0 to 30 (When the temperature is 00 C or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 5 C; 0.5 s 0.5 s s 5 : 3 4 5 6 Compressor operation duration before the unit stops with error 0 to 999 0 to 999 (When it is 00 minutes or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 45 minutes; 0.5 s 0.5 s s 4 5 Minute 3 4 5 6 Maximum frequency when error occurred 0 to 50 0 to 50 (When it is 00 Hz or more, hundreds digit, tens digit and ones digit are displayed by turns. (Example) When 05 Hz; 0.5 s 0.5 s s 05 Hz 3 4 5 6 Requested capacity step when error occurred 0 to 7 0 to 7 Step Compressor frequency control status The following code will be a help to know the operating status of unit. Ten place (left side): 3 4 5 6 Display Compressor frequency control Input current restriction control Compressor current restriction control First digit (Total figure of the corresponding relays are displayed.) Display Compressor frequency control Discharge temp. control (not to over rise) Condensing temp. control (not to over rise) 4 Freezing protection control 8 Heat sink temp.control (not to over rise) When the following 3 points are under control; LED () Input current restriction control () Condensing temp. control (not to over rise) a (3) Heat sink temp. control (not to over rise) Code display 44
SW setting Display detail Explanation for display Unit Requested capacity step (Q STEP) 0 to 7 0 to 7 3 4 5 6 Step 3 4 5 6 Comp. surface temperature (TH33) 3 to 7 <VHA(-BS)> 5 to <VHAR/R3/R4/R5(-BS)> 3 to 7 <VHA(-BS)> 5 to <VHAR/R3/R4/R5(-BS)> (When the temperature is 00: or more, the hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 30:; 0.5 s 0.5 s s : 30 U9 Error details (To be shown while error call is deferred.) (No error) Error details Code 00 Over voltage Under voltage Input current sensor error Abnormal power synchronous signal 0 0 04 08 Code display 3 4 5 6 ACTM error 0 Display examples for multiple errors: Overvoltage (0) + Undervoltage (0) = 03 Undervoltage (0) + Power-sync signal error (08) = 0A Input current sensor error (04) + ACTM error (0) = 4 45
9-8. Request code list Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed. Refer to indoor unit service manual for how to use the controllers and request codes for indoor unit. Request code Request content Description (Display range) Unit Remarks 0 3 4 5 6 7 8 9 0 3 4 5 6 7 8 9 0 3 4 5 6 7 8 9 30 3 3 33 34 35 36 37 38 39 40 4 4 43 44 45 46 47 48 49 Operation state Refer to 9-8-. Detail Contents in Request Code. Compressor-Operating current (rms) 0 50 Compressor-Accumulated operating time 0 9999 Compressor-Number of operation times 0 9999 Discharge temperature (TH4) 3 7 Outdoor unit -Liquid pipe temperature (TH3) 40 90 Water inlet temperature (TH3) 40 0 Outdoor unit-plate HEX pipe temperature (TH6) 39 88 Outdoor unit-outside air temperature (TH7) 39 88 Outdoor unit-heat sink temperature (TH8) 40 00 Discharge superheat (SHd) 0 55 Sub-cool (SC) 0 30 Compressor-Operating frequency 0 55 Compressor-Target operating frequency 0 55 Outdoor unit-fan output step 0 0 Outdoor unit-fan speed 0 9999 (Only for air conditioners with DC fan motor) Outdoor unit-fan speed 0 9999 (Only for air conditioners with DC fan motor) LEV (A) opening LEV (B) opening Primary current DC bus voltage Thermostat operating time A 0 hours 00 times : : : : : : : : Condensing temperature (T63HS) 39 88 : Requested capacity step (Q STEP) 0 7 Step Hz Hz Step rpm rpm 0 500 Pulses 0 500 Pulses 0 50 A 80 370 V 0 999 Minutes "0" is displayed if the air conditioner is a single-fan type. 46
Request code Request content Description (Display range) Unit Remarks 50 5 5 53 54 55 56 57 58 59 60 6 6 63 64 65 66 67 68 69 70 7 7 73 74 75 76 77 78 79 80 8 8 83 84 85 86 87 88 89 90 9 9 93 94 95 96 97 98 99 00 0 0 Outdoor unit-control state Compressor-Frequency control state Outdoor unit-fan control state Actuator output state Error content (U9) Outdoor unit-capacity setting display Outdoor unit-setting information Outdoor unit-microprocessor version information Outdoor unit - Error postponement history (latest) Outdoor unit - Error postponement history (previous) Outdoor unit - Error postponement history 3 (last but one) Refer to 9-8-.Detail Contents in Request Code. Refer to 9-8-.Detail Contents in Request Code. Refer to 9-8-.Detail Contents in Request Code. Refer to 9-8-.Detail Contents in Request Code. Refer to 9-8-.Detail Contents in Request Code. Refer to 9-8-.Detail Contents in Request Code. Refer to 9-8-.Detail Contents in Request Code. Examples) Ver 5.0 "050" Auxiliary information (displayed after Outdoor unit-microprocessor version information (sub No.) version information) Examples) Ver 5.0 A000 "A000" Displays postponement code. (" - - " is displayed if no postponement code is present) Displays postponement code. (" - - " is displayed if no postponement code is present) Displays postponement code. (" - - " is displayed if no postponement code is present) Ver Code Code Code 47
Request code Request content Description (Display range) Unit Remarks 03 04 05 06 07 08 09 0 3 4 5 6 7 8 9 0 3 4 5 6 7 8 9 30 Error history (latest) Displays error history. (" --" is displayed if no history is present.) Error history (second to last) Displays error history. (" --" is displayed if no history is present.) Error history 3 (third to last) Displays error history. (" --" is displayed if no history is present.) 3 : TH3, TH3 6 : TH6 Abnormal thermistor display 7 : TH7 (TH3/TH6/TH7/TH8/TH3) 8 : TH8 0 : No thermistor error Operation mode at time of error Displayed in the same way as request code "0". Compressor-Operating current at time of error 0 50 Compressor-Accumulated operating time at time of error 0 9999 Compressor-Number of operation times at time of error 0 9999 Discharge temperature at time of error 3 7 Outdoor unit -Liquid pipe temperature (TH3) at time of error 40 90 Water inlet temperature (TH3) at time of error 40 0 Plate HEX liquid pipe temperature (TH6) at time of error 39 88 Outdoor unit-outside air temperature (TH7) at time of error 39 88 Outdoor unit-heat sink temperature (TH8) at time of error 40 00 Discharge superheat (SHd) at time of error 0 55 Sub-cool (SC) at time of error 0 30 Compressor-Operating frequency at time of error 0 55 Outdoor unit at time of error 0 0 Fan output step Outdoor unit at time of error 0 9999 Fan speed (Only for air conditioners with DC fan) Outdoor unit at time of error 0 9999 Fan speed (Only for air conditioners with DC fan) LEV (A) opening at time of error 0 500 LEV (B) opening at time of error 0 500 Code Code Code Sensor number A 0 hours 00 times : : : : : : : : Hz Step rpm rpm Pulses Pulses Condensing temperature (T63HS) at time of error 39 88 : Thermostat time until operation stops due to error 0 999 Minutes "0" is displayed if the air conditioner is a singlefan type. 48
9-8-. Detail Contents in Request Code [Operation state] (Request code :" 0") Data display C 4 Relay output state Operation mode Operation mode Display Operation mode 0 STOP FAN C COOL DRY H HEAT d DEFROST Relay output state Power currently Display supplied to compressor 0 3 4 5 6 7 8 A Compressor 4-way valve Solenoid valve [Outdoor unit Control state] (Request code :" 5") Data display State 0 0 0 0 Normal 0 0 0 Preparing for heat operation 0 0 0 Defrost [Compressor Frequency control state] (Request code :" 5") Data display 0 0 Frequency control state Frequency control state Frequency control state Display Current limit control 0 No current limit Primary current limit control is. Secondary current limit control is. [Fan control state] (Request code :" 53") Frequency control state Display Discharge temperature Condensation temperature Anti-freeze Heat sink temperature overheat prevention overheat prevention protection control overheat prevention 0 Controlled Controlled 3 Controlled Controlled 4 Controlled 5 Controlled Controlled 6 Controlled Controlled 7 Controlled Controlled Controlled 8 Controlled 9 Controlled Controlled A Controlled Controlled b Controlled Controlled Controlled C Controlled Controlled d Controlled Controlled Controlled E Controlled Controlled Controlled F Controlled Controlled Controlled Controlled Data display 0 0 Fan step correction value by heat sink temperature overheat prevention control Fan step correction value by cool condensation temperature overheat prevention control Display Correction value (minus) 0 0 + + 49
[Actuator output state] (Request code :"54") Data display 0 0 Actuator output state Actuator output state Actuator output state Display SV 4-way valve Compressor 0 3 4 5 6 7 8 9 A b C d E F Compressor is warming up Actuator output state Display 5C SV SS 0 3 4 5 6 7 [Error content (U9)] (Request code :"55") Data display 0 0 Error content Error content Error content : Detected Error content : Detected Display 0 3 4 5 6 7 8 9 A b C d E F Overvoltage Undervoltage L-phase Power synchronizing error error open error signal error Display Converter Fo PAM error error 0 3 [Outdoor unit - Capacity setting display] (Request code : "70") Data display Capacity 9 35 0 50 60 4 7 0 00 5 5 8 40 40 00 50 50 50
[Outdoor unit Setting information] (Request code : "7") Data display 0 0 Setting information Setting information Setting information Display Defrost mode 0 Standard For high humidity Setting information Single-/ Heat pump/ Display 3-phase cooling only 0 Heat pump Single-phase Cooling only Heat pump 3-phase 3 Cooling only 5
Data Sheet for Air to Water Compact type Applicable model PUHZ-W85VHA(-BS).UK PUHZ-W85VHAR(-BS).UK PUHZ-W85VHAR3(-BS).UK PUHZ-W85VHAR4(-BS).UK PUHZ-W85VHAR5(-BS).UK Model name: [Serial No.: ] Date: SW setting : / 0:OFF SW setting : / 0:OFF Operation Data Recorded operation status 3456 3456 I nlet/outlet water temperature / Operation mode when the error occurred (Mode) 0000 O utdoor Inlet/Outlet Air temperature / Error history () [Latest] (Code) 000 D ischarge/suction temperature / Error history () (Code) 00 D ischarge/suction pressure / Error history (3) [Oldest] (Code) 0000 P ower supply Voltage/Frequency ( V / Hz ) / Deferred error history () (Code) 0000 W ater flow Volume ( L/min ) Deferred error history () (Code) 000 Water inlet temp. [TH3] 0 0 0 Deferred error history (3) (Code) 0 0 Plate HEX liquid temp. [TH6] 0000 Condensing temp. [T 63HS ] 0 Condensing temp. [T 63HS ] 000 Plate HEX liquid temp. [TH6] 00 Ambient temp. [TH7] 0 0 Compressor running frequency (Hz) 0 0 0 Compressor running frequency (Hz) 0 0 0 Fan steps (Step) 0 0 Fan steps (Step) 0 0 0 0 Liquid temp. [TH3] 0 0 0 Liquid temp. [TH3] 0 0 0 0 0 Discharge temp. [TH4] 0 0 0 0 Discharge temp. [TH4] 0 0 0 0 0 LEV-A opening pulse [LEV-A] 0 0 0 LEV-A opening pulse [LEV-A] 0 0 0 0 0 LEV-B opening pulse [LEV-B] 0 0 0 0 LEV-B opening pulse [LEV-B] 0 0 0 0 Ambient temp. [TH7] 0 0 0 Requested capacity step [Q STEP ] 0 Water inlet temp. [TH3] 0 0 0 0 Comp. surface temp. [TH33] 0 Heat sink temp. [TH8] 0 0 0 Heat sink temp. [TH8] 0 0 Discharge Super Heat [SHd] 0 Calculated max. frequency (Hz) 0 0 Compressor operation duration (Min) 0 0 0 0 0 Sub Cool <VHA> [ SC ] 0 0 0 0 0 Number of defrost cycle <6 digits> [ times ] 0 0 0 0 0 Demand capacity (%) 0 0 0 Direct current bus line voltage (V) 0 0 0 0 Compressor running current (A) 0 0 0 0 Input current (0.A) 0 0 0 0 Compressor frequency control status * 0 0 * Temperature differential code [ΔTj] 0 0 0 Calculated max. frequency (Hz) 0 0 Sub Cool [ SC ] 000 when error occurred Compressor operation duration (Min) 0 0 Requested capacity step [Q STEP ] 0 Discharge Super Heat [SHd] 0 0 Compressor running current (A) 0 0 0 Capacity setting (Code) 0 0 0 0 Compressor /OFF ( 00) 0 0 0 0 0 Compressor accumulated operation hours ( 0hours) 0 0 0 0 U9 error detail history (latest) (Code) 0 0 0 Check sum (Code) 0 0s digit :Input current restriction control s digit :Discharge temp. control 4:Freeze protection control :Compressor current restriction control :Condensing temp. control 8:Heat sink temp. control 5
9-9. FUNCTI OF SWITCHES PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHAR3.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR5.UK PUHZ-W85VHAR4-BS.UK PUHZ-W85VHAR5-BS.UK Switch Selection Function Mark No. OFF SW SW5 SW6 Manual defrost To clear error history 53 Default setting* to start Usual setting OFF to clear Usual setting OFF Function details Switch to manual defrost Switch to clear (erase) the following: () Check codes and Suspension flags in RAM () Check codes and Suspension flags in EEPROM Effective timing (SW, 8)/ Note (SW6) When compressor is working in heating mode. * OFF or operating 3 No function OFF 4 No function OFF 5 No function OFF 6 No function OFF Max. fan step Selection of max. fan step at STEP 9 STEP 8 OFF selection the silent mode Always Max. frequency Selection of max. compressor Middle level Low level OFF selection frequency at the silent mode Always 3 No function OFF No function OFF PCB may be damaged, if for other models switch is. 3 6 SW5 4 SW0, SW7 Defrost control selection Model Setting For high humidity Standard OFF Model SW5 SW6 SW0 4 3 4 5 6 W85VHA 0 0 0 W85VHAR/R3/R4/R5 0 0 =, 0=OFF SW7 Both for indoor unit and outdoor unit Breaker size Only for outdoor unit As shown in the left table OFF Breaker size setting (Only for W85VHAR/R3/R4/R5) OFF OFF OFF 5A (Default) 0A OFF 0A 6A 6A OFF Switch to change conditions (standard/high humidity) to start defrosting Make sure to set SW5-4, SW6-3 to 6 and SW0-, correctly When power supply 3 6 No function OFF Mode selection Energy saving mode Powerful mode OFF Always No function OFF SW8 Separate Interface/ Flow temp. Separate power Outdoor unit power Power supply connection When power supply 3 OFF controller-outdoor supply supply method selection unit power supplies <Important Note> All these DIP switches on PUHZ-W85VHA(R/R3/R4/R5) are set as shown above. Spare PCBs, however, will be supplied without any settings, which means that all DIP switches are switched OFF. When servicing, please make sure to set all switches correctly, referring to the previous PCB which is removed from the unit. * Manual defrost should be done as follows. Change the DIP SW- on the outdoor controller board from OFF to. Manual defrost will start by the above operation if these conditions written below are satisfied. Heat mode setting 0 minutes have passed since compressor starts operating or previous manual defrost is finished. Pipe temperature is less than or equal to 8:. Manual defrost will finish if certain conditions are satisfied. Manual defrost can be done if above conditions are satisfied when DIP SW- is changed from OFF to. After DIP SW- is changed from OFF to, there is no problem if DIP SW- is left or changed to OFF again. This depends on the service conditions.
0 DISASSEMBLY PROCEDURE PUHZ-W85VHA.UK PUHZ-W85VHAR.UK PUHZ-W85VHA-BS.UK PUHZ-W85VHAR-BS.UK PUHZ-W85VHAR3.UK PUHZ-W85VHAR4.UK PUHZ-W85VHAR3-BS.UK PUHZ-W85VHAR4-BS.UK OPERATING PROCEDURE. Removing the service panel and top panel () Remove 3 screws (5 ) and slide the hook on the right downward to remove the service panel. () Remove screws (3 for front, 3 for rear/5 ) of the top panel and remove it. Note: When removing service panel and top panel at the same time, count one less screw since they share a screw. Photo Fan grille PHOTOS Top panel fixing screws Slide Top panel Service panel Service panel fixing screws. Removing the fan motor (MF) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove 5 screws (5 ) to detach the fan grille. (See Photo ) (4) Remove a nut (for right handed screw of M6) to detach the propeller. (See Photo ) (5) Disconnect the connector CNF on controller circuit board in electrical parts box. (6) Loosen the clamp for the lead wire on motor support and separator. (7) Remove 4 screws (5 5) to detach the fan motor. (See Photo 3) * When attaching the fan motor, make sure to route the cable through the hook below the fan motor and fix firmly with the clamp. (See Photo 3) (R4 model only) 3. Removing the electrical parts box () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Disconnect the indoor/outdoor connecting wire from terminal block. (4) Disconnect the connector CNF, LEV-A and LEV-B on the controller circuit board. <Symbols on the board> CNF : Fan motor LEV-A, LEV-B : LEV (5) Disconnect the pipe-side connections of the following parts. Thermistor <Liquid> (TH3) Thermistor <Discharge> (TH4) Thermistor <Ambient, Plate HEX liquid> (TH7/6) Thermistor <Heat sink> (TH8) Thermistor <Inlet water> (TH3) Thermistor <Comp. surface> (TH33) High pressure switch (63H) High pressure sensor (63HS) 4-way valve coil (S4) (6) Release the lead wire from the hole on separator. (7) Remove the terminal cover and disconnect the compressor lead wires. (8) Remove a screw (4 0) and detach the electrical parts box by pulling it upward. The electrical parts box is fixed with hooks on the left and hook on the right. Nut Photo Front panel Propeller Photo 4 Grille fixing screws Front panel fixing screws Fan motor (MF) Photo 3 Fan motor fixing screws Hook* Controller circuit board (C.B.) Electrical parts box Electrical parts box fixing screw (4 x 0) Fan motor fixing screws 54
OPERATING PROCEDURE 4. Removing the thermistor <Plate HEX Liquid> (TH6) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Disconnect the connector TH7/6 (red) on the controller circuit board. (4) Loosen the clamps for the lead wire. (5) Pull out the thermistor <Plate HEX Liquid> (TH6) from the sensor holder. Photo 5 Plate HEX liquid thermistor (TH6) PHOTOS Liquid thermistor (TH3) Note: When replacing thermistor <Plate HEX Liquid>(TH6), replace it together with thermistor<ambient> (TH7), since they are combined together. Refer to No.5 below to remove thermistor <Ambient>. 5. Removing the thermistor <Outdoor ambient> (TH7) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Disconnect the connector TH7/6 (red) on the controller circuit board. (4) Loosen the clamps for the lead wire. (5) Pull out the thermistor <Ambient> (TH7) from the sensor holder. Note: When replacing thermistor <Ambient> (TH7), replace it together with thermistor <Plate HEX Liquid> (TH6), since they are combined together. Refer to No.4 above to remove thermistor <Plate HEX Liquid>. Receiver Photo 6 Plate heat exchanger Plate heat exchanger fixing screw Sensor holder for ambient thermistor (TH7) 6. Removing the thermistor <Liquid> (TH3) and thermistor <Discharge> (TH4), thermistor <Comp. surface> (TH33) () Remove the service panel. (See Photo ) () Disconnect the connectors, TH3 (white), TH4 (white), and TH33 (yellow) on the controller circuit board. (3) Loosen the clamps for the lead wire. (4) Pull out the thermistor <Liquid> (TH3) (See Photo 5) and thermistor <Discharge> (TH4) from the sensor holder. [Removing the thermistor <Comp. surface> (TH33)] (5) Pull out the thermistor <Comp. surface> (TH33) from the holder of the compressor surface. Photo 7 Discharge thermistor (TH4) 7. Removing the thermistor <Inlet Water> (TH3) () Remove the service panel. (See Photo ) () Remove screws (5 ) and remove the front cover panel. (3) Remove 3 stay fixing screws (4 0) and remove the stay. Remove 5 side panel (R) fixing screws (5 ) and remove the right side panel. (4) Disconnect the connector, TH3 (black) on the controller circuit board. (5) Loosen the clamp for the lead wire. (6) Remove the thermistor <Inlet water> (TH3) from the plate heat exchanger. Note: Before removing the thermistor<inlet water> (TH3), recover water in the plate heat exchanger. Photo 8 Inlet water thermistor (TH3) Plate heat exchanger 55
OPERATING PROCEDURE 8. Removing the solenoid valve coil <4-way valve> (S4) linear expansion valve coil (LEV (A), LEV (B)) and solenoid valve coil <Bypass valve> (SV) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the electrical parts box. (See Photo 4) [Removing the solenoid valve coil <4-way valve> ] (4) Remove solenoid valve coil <4-way valve> fixing screw (M4 6). (5) Remove the solenoid valve coil <4-way valve>. (6) Disconnect the connector S4 (green) on the controller circuit board. [Removing the linear expansion valve coil] (4) Remove the linear expansion valve coil by sliding the coil upward. (5) Disconnect the connectors, LEV A (white) and LEV B (red), on the controller circuit board. [Removing the solenoid valve coil <Bypass valve>] (4) Remove the solenoid valve coil <Bypass valve> fixing screw (M4 6). (5) Remove the solenoid valve coil <Bypass valve> by sliding the coil upward. (6) Disconnect the connector SV (blue) on the controller circuit board. 9. Removing the 4-way valve () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo.) (3) Remove the electrical parts box. (See Photo 4) (4) Remove the stay and the side panel (R). (Refer to Procedure 7) (5) Remove the solenoid valve coil <4-way valve>. (See Photo 9) (Refer to Procedure 8) (6) Recover refrigerant. (7) Remove the welded part of 4-way valve. Photo 9 4-way valve coil (S4) High pressure switch Photo 0 PHOTOS 4-way valve Bypass valve coil (SV) 4-way valve coil (S4) LEV-A Bypass valve LEV-B Note : Recover refrigerant without letting it out in the air. Note : The welded part can be removed easily by removing the side panel (R). Note 3: When installing the 4-way valve, make sure to cover it with a wet cloth to prevent it from heating (0 C or more), then braze the pipes so that the inside of pipes are not oxidized. Stay fixing screw Stay fixing screw 0. Removing linear expansion valve () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the electrical parts box. (See Photo 4) (4) Remove the stay and the side panel (R). (Refer to Procedure 7) (5) Remove the linear expansion valve. (Refer to Procedure 8) (6) Recover refrigerant. (7) Remove the welded part of linear expansion valve. 4-way valve Note : Recover refrigerant without spreading it in the air. Note : The welded part can be removed easily by removing the side panel (R). Note 3: When installing the linear expansion valve, cover it with a wet cloth to prevent it from heating (0 C or more), then braze the pipes so that the inside of pipes are not oxidized. Stay fixing screw 56
OPERATING PROCEDURE PHOTOS. Removing the bypass valve () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the side panel (R). (Refer to Procedure 7) (4) Remove the solenoid valve coil <Bypass valve>. (5) Recover refrigerant. (6) Remove the welded part of bypass valve. Photo Solenoid valve coil (S4) 4-way valve LEV-A LEV-B Note : Recover refrigerant without letting it out in the air. Note : The welded part can be removed easily by removing the right side panel. Note 3: When installing the bypass valve, make sure to cover it with a wet cloth to prevent it from heating (0 C or more), then braze the pipes so that the inside of pips are not oxidized.. Removing the high pressure switch (63H) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the side panel (R). (Refer to Procedure 7) (4) Pull out the lead wire of high pressure switch. (5) Recover refrigerant. (6) Remove the welded part of high pressure switch. Note : Recover refrigerant without letting it out in the air. Note : The welded part can be removed easily by removing the right side panel. Note 3: When installing the high pressure switch, make sure to cover it with a wet cloth to prevent it from heating (00 C or more), then braze the pipes so that the inside of pipes are not oxidized. High pressure switch Solenoid valve coil (SV) Bypass valve High pressure sensor 3. Removing the high pressure sensor (63HS) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the side panel (R). (Refer to Procedure 7) (4) Pull out the lead wire of high pressure sensor. (5) Recover refrigerant. (6) Remove the welded part of high pressure sensor. Note : Recover refrigerant without letting it out in the air. Note : The welded part can be removed easily by removing the right side panel. Note 3: When installing the high pressure sensor, make sure to cover it with a wet cloth to prevent it from heating (00 C or more), then braze the pipes so that the inside of pipes are not oxidized. 57
OPERATING PROCEDURE 4. Removing the compressor (MC) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the front cover panel. (4) Remove the side panel (R). (Refer to Procedure 7) (5) Remove the electrical parts box. (See Photo 4) (6) Remove the stay. (Refer to Procedure 7) (7) Remove the side panel (R). (8) Remove 5 screws (: 4 0, 4: 5 ) and remove the front panel. (9) Remove 3 screws (4 0) and remove the separator. (0) Remove the terminal cover and remove the lead wire for compressor. () Remove the soundproof cover for compressor. () Recover refrigerant. (3) Remove the 3 points of the compressor fixing nut using a spanner or a adjustable wrench. (4) Remove the welded pipe of the compressor, then remove the compressor. Note : Recover refrigerant without letting it out in the air. Photo Lead wire for compressor Compressor (MC) PHOTOS Compressor fixing nuts Terminal cover 5. Removing the receiver () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove screws (5 ) and remove the front cover panel. (4) Remove the electrical parts box. (See Photo 4) (5) Remove the stay. (See Photo 0) (6) Remove the side panel (R). (7) Recover the refrigerant. (8) Remove welded pipes of receiver. (9) Remove receiver leg fixing screws (4 0), then remove the receiver. Note : Recover refrigerant without letting it out in the air. Photo 3 Compressor fixing nut Receiver leg fixing screw 6. Removing the plate heat exchanger () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the front cover panel. (Refer to Procedure 7) (4) Remove the electrical parts box. (See Photo 4) (5) Remove the stay. (See Photo 0) (6) Remove the side panel (R). (7) Recover the refrigerant (8) Remove welded pipes of plate heat exchanger inlet and outlet. (9) Remove plate heat exchanger fixing screws (4 0), then remove the plate heat exchanger. Note : Recover refrigerant without letting it out in the air. Note : Before removing the thermistor <Inlet water> (TH3), recover water in the plate heat exchanger. Photo 4 Plate HEX liquid thermistor (TH6) Receiver Liquid thermistor (TH3) Plate heat exchanger Plate heat exchanger fixing screw 58
OPERATING PROCEDURE 7. Removing the controller circuit board (C.B.): Figure () Remove all lead wire connectors on controller circuit board (C.B.). CNF, CNDC, CNAC, CN, CN4, CN5C, S4, SV, 63H, 63HS, LEV-A, LEV-B, TH3, TH7/6, TH3, TH4 () Remove controller circuit board from the C.B. base. (5 supports) Figure Electrical parts box PHOTOS Active filter module (ACTM) Power circuit board (P.B.) Reactor (DCL) 8. Removing the noise filter circuit board (N.F.): Figure, Photo 5 () Remove E, CN5, LO, NO lead wire connectors from noise filter circuit board (N.F.). () Remove E lead wire connector from electrical parts box. (3) Remove L, N lead wire connectors from terminal block (TB). (4) Remove 4 screws (4 0) for fixing the C.B. base and detach the C.B. base from the electrical parts box. (5) Remove CNAC, CNAC, E, LI, NI lead wire connectors from noise filter circuit board (N.F.). (6) Remove noise filter circuit board from the C.B. base. ( supports) 9. Removing the power circuit board (P.B.) : Figure, Photo 6 () Remove CN, CN4, CNDC lead wire connectors from controller circuit board (C.B.). () Remove LO, NO, CN5 lead wire connectors from noise filter circuit board (N.F.). (3) Remove 3 screws (4 0) for fixing the C.B. base and detach the C.B. base from the electrical parts box. (4) Remove all lead wire connectors on power circuit board (P.B.). CNAF, CN, CN3, CN5, CN4, CNDC TABU, TABV,TAVW, TABT, TABS, TABP, TABN, TABN (5) Remove power circuit board from the electrical parts box. (3 supports and 4 screws ( screws (3 ) + screws (4 8)) 0. Removing the active filter module (ACTM): Figure, Photo 6 () Remove CN, CN4, CNDC lead wire connectors from controller circuit board (C.B.). () Remove LO, NO, CN5 lead wire connectors from noise filter circuit board (N.F.). (3) Remove 3 screws (4 0) for fixing the C.B. base and detach the C.B. base from the electrical parts box. (4) Remove all lead wires on active filter module (ACTM). L, L, P, Io, +, -, CNAF (4 wires) (5) Remove the active filter module (ACTM) from the electrical parts box. ( screws (4 4)). Removing the reactor (DCL): Figure, Figure () Remove 4 reactor fixing screws (4 0) to detach the reactor (DCL). () Disconnect L, L lead wire from active filter module (ACTM). Remove reactor wire from wire support.. Removing the thermistor <Heat sink> (TH8): Photo 6 () Remove CN, CN4, CNDC lead wire connectors from controller circuit board (C.B.). () Remove LO, NO, CN5 lead wire connectors from noise filter circuit board (N.F.). (3) Remove 3 screws (4 0) for fixing the C.B. base and detach the C.B. base from the electrical parts box. (4) Remove all lead wire connectors on power circuit board (P.B.). CNAF, CN, CN3, CN5, CN4, CNDC TABU, TABV, TAVW, TABT, TABS, TABP, TABN, TABN (5) Remove power circuit board from the electrical parts box. (3 supports and 4 screws ( screws (3 ) + screws (4 8)) (6) Remove the thermistor <Heat sink> from the electrical parts box. ( screw (3 )) Controller circuit board (C.B.) Photo 5 Photo 6 Lead wire for heat sink thermistor Figure Active filter module (ACTM) Reactor fixing screws Terminal block (TB) Wire support C.B. base Noise filter circuit board (N.F.) Noise filter circuit board (N.F.) Reactor (DCL) Power circuit board (P.B) Reactor fixing screws 59
PUHZ-W85VHAR5.UK OPERATING PROCEDURE PUHZ-W85VHAR5-BS.UK. Removing the service panel and top panel () Remove 3 screws (5 ) and slide the hook on the right downward to remove the service panel. () Remove screws (3 for front, 3 for rear/5 ) of the top panel and remove it. Note: When removing service panel and top panel at the same time, count one less screw since they share a screw. Photo Fan grille PHOTOS Top panel fixing screws Slide Top panel Service panel Service panel fixing screws. Removing the fan motor (MF) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove 5 screws (5 ) to detach the fan grille. (See Photo ) (4) Remove a nut (for right handed screw of M6) to detach the propeller. (See Photo ) (5) Disconnect the connector CNF on controller circuit board in electrical parts box. (6) Loosen the clamp for the lead wire on motor support and separator. (7) Remove 4 screws (5 5) to detach the fan motor. (See Photo 3) * When attaching the fan motor, make sure to route the cable through the hook below the fan motor and fix firmly with the clamp. (See Photo 3) 3. Removing the electrical parts box Photo 4 () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Disconnect the indoor/outdoor connecting wire from terminal block. (4) Disconnect the connector CNF, LEV-A and LEV-B on the controller circuit board. <Symbols on the board> CNF : Fan motor LEV-A, LEV-B : LEV (5) Disconnect the pipe-side connections of the following parts. Thermistor <Liquid> (TH3) Thermistor <Discharge> (TH4) Thermistor <Ambient, Plate HEX liquid> (TH7/6) Thermistor <Heat sink> (TH8) Thermistor <Inlet water> (TH3) Thermistor <Comp. surface> (TH33) High pressure switch (63H) High pressure sensor (63HS) 4-way valve coil (S4) (6) Release the lead wire from the hole on separator. (7) Remove the terminal cover and disconnect the compressor lead wires. (8) Remove a screw (4 0) and detach the electrical parts box by pulling it upward. The electrical parts box is fixed with hooks on the left and hook on the right. Nut Grille fixing screws Photo Front panel Propeller Front panel fixing screws Fan motor (MF) Photo 3 Fan motor fixing screws Hook* Controller circuit board (C.B.) Electrical parts box Electrical parts box fixing screw (4 x 0) Fan motor fixing screws 60
OPERATING PROCEDURE 4. Removing the thermistor <Plate HEX Liquid> (TH6) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Disconnect the connector TH7/6 (red) on the controller circuit board. (4) Loosen the clamps for the lead wire. (5) Pull out the thermistor <Plate HEX Liquid> (TH6) from the sensor holder. Photo 5 Plate HEX liquid thermistor (TH6) PHOTOS Liquid thermistor (TH3) Note: When replacing thermistor <Plate HEX Liquid>(TH6), replace it together with thermistor<ambient> (TH7), since they are combined together. Refer to No.5 below to remove thermistor <Ambient>. 5. Removing the thermistor <Outdoor ambient> (TH7) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Disconnect the connector TH7/6 (red) on the controller circuit board. (4) Loosen the clamps for the lead wire. (5) Pull out the thermistor <Ambient> (TH7) from the sensor holder. Note: When replacing thermistor <Ambient> (TH7), replace it together with thermistor <Plate HEX Liquid> (TH6), since they are combined together. Refer to No.4 above to remove thermistor <Plate HEX Liquid>. Receiver Photo 6 Plate heat exchanger Plate heat exchanger fixing screw Sensor holder for ambient thermistor (TH7) 6. Removing the thermistor <Liquid> (TH3) and thermistor <Discharge> (TH4), thermistor <Comp. surface> (TH33) () Remove the service panel. (See Photo ) () Disconnect the connectors, TH3 (white), TH4 (white), and TH33 (yellow) on the controller circuit board. (3) Loosen the clamps for the lead wire. (4) Pull out the thermistor <Liquid> (TH3) (See Photo 5) and thermistor <Discharge> (TH4) from the sensor holder. [Removing the thermistor <Comp. surface> (TH33)] (5) Pull out the thermistor <Comp. surface> (TH33) from the holder of the compressor surface. Photo 7 Discharge thermistor (TH4) 7. Removing the thermistor <Inlet Water> (TH3) () Remove the service panel. (See Photo ) () Remove screws (5 ) and remove the front cover panel. (3) Remove 3 stay fixing screws (4 0) and remove the stay. Remove 5 side panel (R) fixing screws (5 ) and remove the right side panel. (4) Disconnect the connector, TH3 (black) on the controller circuit board. (5) Loosen the clamp for the lead wire. (6) Remove the thermistor <Inlet water> (TH3) from the plate heat exchanger. Note: Before removing the thermistor<inlet water> (TH3), recover water in the plate heat exchanger. Photo 8 Inlet water thermistor (TH3) Plate heat exchanger 6
OPERATING PROCEDURE PHOTOS 8. Removing the solenoid valve coil <4-way valve> (S4) linear expansion valve coil (LEV (A), LEV (B)) and solenoid valve coil <Bypass valve> (SV) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the electrical parts box. (See Photo 4) [Removing the solenoid valve coil <4-way valve> ] (4) Remove solenoid valve coil <4-way valve> fixing screw (M4 6). (5) Remove the solenoid valve coil <4-way valve>. (6) Disconnect the connector S4 (green) on the controller circuit board. [Removing the linear expansion valve coil] (4) Remove the linear expansion valve coil by sliding the coil upward. (5) Disconnect the connectors, LEV A (white) and LEV B (red), on the controller circuit board. [Removing the solenoid valve coil <Bypass valve>] (4) Remove the solenoid valve coil <Bypass valve> fixing screw (M4 6). (5) Remove the solenoid valve coil <Bypass valve> by sliding the coil upward. (6) Disconnect the connector SV (blue) on the controller circuit board. Photo 9 4-way valve coil (S4) High pressure switch 4-way valve Bypass valve LEV-A Bypass valve coil (SV) LEV-B 9. Removing the 4-way valve () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo.) (3) Remove the electrical parts box. (See Photo 4) (4) Remove the stay and the side panel (R). (Refer to Procedure 7) (5) Remove the solenoid valve coil <4-way valve>. (See Photo 9) (Refer to Procedure 8) (6) Recover refrigerant. (7) Remove the welded part of 4-way valve. Photo 0 4-way valve coil (S4) Note : Recover refrigerant without letting it out in the air. Note : The welded part can be removed easily by removing the side panel (R). Note 3: When installing the 4-way valve, make sure to cover it with a wet cloth to prevent it from heating (0 C or more), then braze the pipes so that the inside of pipes are not oxidized. Stay fixing screw Stay fixing screw 0. Removing linear expansion valve () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the electrical parts box. (See Photo 4) (4) Remove the stay and the side panel (R). (Refer to Procedure 7) (5) Remove the linear expansion valve. (Refer to Procedure 8) (6) Recover refrigerant. (7) Remove the welded part of linear expansion valve. 4-way valve Note : Recover refrigerant without spreading it in the air. Note : The welded part can be removed easily by removing the side panel (R). Note 3: When installing the linear expansion valve, cover it with a wet cloth to prevent it from heating (0 C or more), then braze the pipes so that the inside of pipes are not oxidized. Stay fixing screw 6
OPERATING PROCEDURE PHOTOS. Removing the bypass valve () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the side panel (R). (Refer to Procedure 7) (4) Remove the solenoid valve coil <Bypass valve>. (5) Recover refrigerant. (6) Remove the welded part of bypass valve. Photo 4-way valve coil (S4) LEV-A LEV-B Note : Recover refrigerant without letting it out in the air. Note : The welded part can be removed easily by removing the right side panel. Note 3: When installing the bypass valve, make sure to cover it with a wet cloth to prevent it from heating (0 C or more), then braze the pipes so that the inside of pips are not oxidized. High pressure sensor. Removing the high pressure switch (63H) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the side panel (R). (Refer to Procedure 7) (4) Pull out the lead wire of high pressure switch. (5) Recover refrigerant. (6) Remove the welded part of high pressure switch. High pressure switch Bypass valve Bypass valve coil (SV) Note : Recover refrigerant without letting it out in the air. Note : The welded part can be removed easily by removing the right side panel. Note 3: When installing the high pressure switch, make sure to cover it with a wet cloth to prevent it from heating (00 C or more), then braze the pipes so that the inside of pipes are not oxidized. 3. Removing the high pressure sensor (63HS) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the side panel (R). (Refer to Procedure 7) (4) Pull out the lead wire of high pressure sensor. (5) Recover refrigerant. (6) Remove the welded part of high pressure sensor. Note : Recover refrigerant without letting it out in the air. Note : The welded part can be removed easily by removing the right side panel. Note 3: When installing the high pressure sensor, make sure to cover it with a wet cloth to prevent it from heating (00 C or more), then braze the pipes so that the inside of pipes are not oxidized. 63
OPERATING PROCEDURE 4. Removing the compressor (MC) () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the front cover panel. (4) Remove the side panel (R). (Refer to Procedure 7) (5) Remove the electrical parts box. (See Photo 4) (6) Remove the stay. (Refer to Procedure 7) (7) Remove the side panel (R). (8) Remove 5 screws (: 4 0, 4: 5 ) and remove the front panel. (9) Remove 3 screws (4 0) and remove the separator. (0) Remove the terminal cover and remove the lead wire for compressor. () Remove the soundproof cover for compressor. () Recover refrigerant. (3) Remove the 3 points of the compressor fixing nut using a spanner or a adjustable wrench. (4) Remove the welded pipe of the compressor, then remove the compressor. Note : Recover refrigerant without letting it out in the air. Photo Lead wire for compressor Compressor (MC) PHOTOS Compressor fixing nuts Terminal cover 5. Removing the receiver () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove screws (5 ) and remove the front cover panel. (4) Remove the electrical parts box. (See Photo 4) (5) Remove the stay. (See Photo 0) (6) Remove the side panel (R). (7) Recover the refrigerant. (8) Remove welded pipes of receiver. (9) Remove receiver leg fixing screws (4 0), then remove the receiver. Note : Recover refrigerant without letting it out in the air. Photo 3 Compressor fixing nut Receiver leg fixing screw 6. Removing the plate heat exchanger () Remove the service panel. (See Photo ) () Remove the top panel. (See Photo ) (3) Remove the front cover panel. (Refer to Procedure 7) (4) Remove the electrical parts box. (See Photo 4) (5) Remove the stay. (See Photo 0) (6) Remove the side panel (R). (7) Recover the refrigerant (8) Remove welded pipes of plate heat exchanger inlet and outlet. (9) Remove plate heat exchanger fixing screws (4 0), then remove the plate heat exchanger. Note : Recover refrigerant without letting it out in the air. Note : Before removing the thermistor <Inlet water> (TH3), recover water in the plate heat exchanger. Photo 4 Plate HEX liquid thermistor (TH6) Receiver Liquid thermistor (TH3) Plate heat exchanger Plate heat exchanger fixing screw 64
OPERATING PROCEDURE 7. Removing the controller circuit board (C.B.): Figure () Remove all lead wire connectors on controller circuit board (C.B.). CNF, CNDC, CNAC, CN, CN4, CN5C, S4, SV, 63H, 63HS, LEV-A, LEV-B, TH3, TH7/6, TH3, TH4 () Remove controller circuit board from the C.B. base. (5 supports) Figure Electrical parts box PHOTOS Active filter module (ACTM) Power circuit board (P.B.) Reactor (DCL) 8. Removing the noise filter circuit board (N.F.): Figure, Photo 5 () Remove E, CN5, LO, NO lead wire connectors from noise filter circuit board (N.F.). () Remove E lead wire connector from electrical parts box. (3) Remove L, N lead wire connectors from terminal block (TB). (4) Remove 4 screws (4 0) for fixing the C.B. base and detach the C.B. base from the electrical parts box. (5) Remove CNAC, CNAC, E, LI, NI lead wire connectors from noise filter circuit board (N.F.). (6) Remove noise filter circuit board from the C.B. base. ( supports) 9. Removing the power circuit board (P.B.) : Figure, Photo 6 () Remove CN, CN4, CNDC lead wire connectors from controller circuit board (C.B.). () Remove LO, NO, CN5 lead wire connectors from noise filter circuit board (N.F.). (3) Remove 3 screws (4 0) for fixing the C.B. base and detach the C.B. base from the electrical parts box. (4) Remove all lead wire connectors on power circuit board (P.B.). CNAF, CN, CN3, CN5, CN4, CNDC TABU, TABV,TAVW, TABT, TABS, TABP, TABN, TABN (5) Remove power circuit board from the electrical parts box. (3 supports and 4 screws ( screws (3 ) + screws (4 8)) 0. Removing the active filter module (ACTM): Figure, Photo 6 () Remove CN, CN4, CNDC lead wire connectors from controller circuit board (C.B.). () Remove LO, NO, CN5 lead wire connectors from noise filter circuit board (N.F.). (3) Remove 3 screws (4 0) for fixing the C.B. base and detach the C.B. base from the electrical parts box. (4) Remove all lead wires on active filter module (ACTM). L, L, P, Io, +, -, CNAF (4 wires) (5) Remove the active filter module (ACTM) from the electrical parts box. ( screws (4 4)). Removing the reactor (DCL): Figure, Figure () Remove 4 reactor fixing screws (4 0) to detach the reactor (DCL). () Disconnect L, L lead wire from active filter module (ACTM). Remove reactor wire from wire support.. Removing the thermistor <Heat sink> (TH8): Photo 6 () Remove CN, CN4, CNDC lead wire connectors from controller circuit board (C.B.). () Remove LO, NO, CN5 lead wire connectors from noise filter circuit board (N.F.). (3) Remove 3 screws (4 0) for fixing the C.B. base and detach the C.B. base from the electrical parts box. (4) Remove all lead wire connectors on power circuit board (P.B.). CNAF, CN, CN3, CN5, CN4, CNDC TABU, TABV, TAVW, TABT, TABS, TABP, TABN, TABN (5) Remove power circuit board from the electrical parts box. (3 supports and 4 screws ( screws (3 ) + screws (4 8)) (6) Remove the thermistor <Heat sink> from the electrical parts box. ( screw (3 )) Controller circuit board (C.B.) Photo 5 Photo 6 Lead wire for heat sink thermistor Figure Active filter module (ACTM) Reactor fixing screws Terminal block (TB) Wire support C.B. base Noise filter circuit board (N.F.) Noise filter circuit board (N.F.) Reactor (DCL) Power circuit board (P.B) Reactor fixing screws 65