PLFY-P15VCM-E3.TH PLFY-P20VCM-E3.TH PLFY-P25VCM-E3.TH PLFY-P32VCM-E3.TH PLFY-P40VCM-E3.TH

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1 SPLIT-TYPE, HEAT PUMP AIR CDITIERS TECHNICAL & SERVICE MANUAL June 04 No. Indoor unit [Model Name] PLFY-PVCM-E PLFY-P0VCM-E PLFY-PVCM-E PLFY-PVCM-E PLFY-P40VCM-E R40A [Service Ref.] PLFY-PVCM-E.TH PLFY-P0VCM-E.TH PLFY-PVCM-E.TH PLFY-PVCM-E.TH PLFY-P40VCM-E.TH R407C R Note: This manual describes service data of the indoor units only. RoHS compliant products have <G> mark on spec name plate. CTENTS Model name indication INDOOR UNIT. SAFETY PRECAUTI.... PARTS NAMES AND FUNCTIS SPECIFICATIS WAY AIR FLOW SYSTEM OUTLINES AND DIMENSIS WIRING DIAGRAM REFRIGERANT SYSTEM DIAGRAM TROUBLESHOOTING DISASSEMBLY PROCEDURE... 9 PARTS CATALOG (OCB69)

2 SAFETY PRECAUTI CAUTIS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R407C Do not use the existing refrigerant piping. The old refrigerant and lubricant in the existing piping contain a large amount of chlorine which may cause the lubricant deterioration of the new unit. Use low residual oil piping If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result. Store the piping indoors, and both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.) If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and compressor trouble may result. Use ESTR, ETHER or HAB as the lubricant to coat flares and flange connection parts. If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc. Use liquid refrigerant to charge the system. Do not use a refrigerant other than R407C. If another refrigerant (R, etc.) is used, the chlorine in the refrigerant may cause the lubricant deterioration. Use a vacuum pump with a reverse flow check valve. The vacuum pump oil may flow back into the refrigerant cycle and cause the lubricant deterioration. 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. Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released. If gas refrigerant is used to seal the system, the composition of the refrigerant in the cylinder will change and performance may drop.

3 [] Cautions for service After recovering the all refrigerant in the unit, proceed to working. Do not release refrigerant in the air. After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant. [] Refrigerant recharging () Refrigerant recharging process Direct charging from the cylinder. R407C cylinder available on the market has a syphon pipe. Leave the syphon pipe cylinder standing and recharge it. (By liquid refrigerant) Unit Gravimeter () Recharge in refrigerant leakage case After recovering the all refrigerant in the unit, proceed to working. Do not release the refrigerant in the air. After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant. [] Service tools Use the below service tools as exclusive tools for R407C refrigerant. No. Tool name Specifications Gauge manifold Only for R407C Use the existing fitting SPECIFICATIS. (UNF7/6) Use high-tension side pressure of.4mpa G or over. Charge hose Only for R407C Use pressure performance of.0mpa G or over. Electronic scale 4 Gas leak detector Use the detector for R4a or R407C. Adaptor for reverse flow check Attach on vacuum pump. 6 Refrigerant charge base 7 Refrigerant cylinder For R407C Top of cylinder (Brown) Cylinder with syphon 8 Refrigerant recovery equipment

4 Cautions for units utilizing refrigerant R40A Do not use the existing refrigerant piping. The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the new unit. Use low residual oil piping If there is a large amount of residual oil (hydraulic oil, etc.) inside the piping and joints, deterioration of the lubricant will result. Store the piping indoors, and both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.) If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor. The refrigerant oil applied to flare and flange connections must be ester oil, ether oil or alkylbenzene oil in a small amount. If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc. 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. 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 the following tools specifically designed for use with R40A refrigerant. The following tools are necessary to use R40A refrigerant. Tools for R40A Gauge manifold Flare tool Charge hose Size adjustment gauge 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. Vacuum pump adaptor Electronic refrigerant charging scale If a charging cylinder is used, the composition of refrigerant will change 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. Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released. 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. 4

5 [] Cautions for service () Perform service after recovering the refrigerant left in unit completely. () Do not release refrigerant in the air. () After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant. [] Additional refrigerant charge When charging directly from cylinder Check that cylinder for R40A on the market is syphon type. Charging should be performed with the cylinder of syphon standing vertically. (Refrigerant is charged from liquid phase.) Unit Gravimeter [] 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.mpa G or over. Charge hose Only for R40A Use pressure performance of.09mpa G or over. Electronic scale 4 Gas leak detector Use the detector for R4a, R407C or R40A. 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

6 PARTS NAMES AND FUNCTIS -. Indoor Unit Horizontal Air Outlet Sets horizontal airflow automatically during cooling or dehumidifying. Filter Removes dust and pollutants from drawn in air. Grille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. Air Intake Draws in air from room. 6

7 -. Wired remote controller <PAR-0MAA/PAR-MAA> Wired remote controller function The functions which can be used are restricted according to each model. : Supported : Unsupported Function PAR-0MAA/PAR-MAA Slim City multi PAR-MAA Body Product size H W D (mm) LCD Full Dot LCD Partial Dot LCD Backlight Energy-saving Energy-saving operation schedule Automatic return to the preset temperature Restriction Setting the temperature range restriction Function Operation lock function Weekly timer On / Off timer High Power Manual vane angle The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear. <Main display> Cool Room Set temp. Mode Temp. Fan Fri Auto <Main menu> Main Main menu Vane Louver Vent. (Lossnay) High power Timer Weekly timer OU silent mode Main display: Cursor Page Function buttons F F F F4 / button Press to turn / the indoor unit. SELECT button Press to save the setting. RETURN button Press to return to the previous screen. MENU button Press to bring up the Main menu. Backlit LCD Operation settings will appear. When the backlight is off, pressing any button turns the backlight on and it will stay lit for a certain period of time depending on the screen. When the backlight is off, pressing any button turns the backlight on and does not perform its function. (except for the ( / ) button) Function guide / lamp This lamp lights up in green while the unit is in operation. It blinks while the remote controller is starting up or when there is an error. Function button F Main display : Press to change the operation mode. Main menu : Press to move the cursor down. Function button F Main display : Press to decrease temperature. Main menu : Press to move the cursor up. Function button F Main display : Press to increase temperature. Main menu : Press to go to the previous page. Function button F4 Main display : Press to change the fan speed. Main menu : Press to go to the next page. 7

8 The main display can be displayed in two different modes: "Full" and "Basic". The factory setting is "Full". To switch to the "Basic" mode, change the setting on the Main display setting. <Full mode> All icons are displayed for explanation. <Basic mode> Fri Fri Cool Room Set temp. Auto Cool Set temp. Auto Mode Temp. Fan Mode Temp. Fan Operation mode Indoor unit operation mode appears here. Preset temperature Preset temperature appears here. Clock (See the Installation Manual.) Current time appears here. Fan speed Fan speed setting appears here. Button function guide Functions of the corresponding buttons appear here. Appears when the buttons are locked. Appears when the On/Off timer or Night setback function is enabled. Appears when the Weekly timer is enabled. Appears while the units are operated in the energy-save mode. Appears when the / operation is centrally controlled. Appears when the operation mode is centrally controlled. Appears when the built-in thermistor on the remote controller is activated to monitor the room temperature. appears when the thermistor on the indoor unit is activated to monitor the room temperature. Appears when the preset temperature is centrally controlled. Indicates the vane setting. Appears when the filter reset function is centrally controlled. Indicates when filter needs maintenance. Room temperature (See the Installation Manual.) Current room temperature appears here. Indicates the louver setting. Indicates the ventilation setting. Appears when the preset temperature range is restricted. Most settings (except /, mode, fan speed, temperature) can be made from the Menu screen. 8

9 Menu structure Main menu Press the MENU button. Move the cursor to the desired item with the F and F buttons, and press the SELECT button. Vane Louver Vent. (Lossnay) High power Timer On / Off timer Auto-Off timer Weekly timer Restriction Temp. range Operation lock Energy saving Auto return Schedule Night setback Filter Information Error Information Maintenance Auto descending panel Manual vane angle Initial setting Main / Sub Clock Main display Contrast Display details Auto mode Administrator password Language selection Service Test run Input maintenance info. Function setting Lossnay (City Multi only) Check Self check Maintenance password Remote controller check Not all functions are available on all models of indoor units. 9

10 Main menu list Setting and display items Vane Louver Vent. (Lossnay) High power Timer Auto-Off timer Weekly timer* Setting details Use to set the vane angle. Select a desired vane setting from five different settings. Use to turn / the louver. Select a desired setting from "" and "." Use to set the amount of ventilation. Select a desired setting from "Off," "Low," and "High." Use to reach the comfortable room temperature quickly. Units can be operated in the High-power mode for up to 0 minutes. On/Off timer* Use to set the operation On/Off times. Time can be set in -minute increments. Use to set the Auto-Off time. Time can be set to a value from 0 to 40 in 0-minute increments. Use to set the weekly operation On / Off times. Up to eight operation patterns can be set for each day. (Not valid when the On/Off timer is enabled.) Restriction Temp. range Use to restrict the preset temperature range. Different temperature ranges can be set for different operation modes. Energy saving Night setback* Filter information Error information Maintenance Operation lock Auto return Schedule* Manual vane angle Use to lock selected functions. The locked functions cannot be operated. Use to get the units to operate at the preset temperature after performing energy-save operation for a specified time period. Time can be set to a value from 0 and 0 in 0-minute increments. (This function will not be valid when the preset temperature ranges are restricted.) Set the start/stop times to operate the units in the energy-save mode for each day of the week, and set the energy-saving rate. Up to four energy-save operation patterns can be set for each day. Time can be set in -minute increments. Energy-saving rate can be set to a value from 0% or 0 to 90% in 0% increments. Use to make Night setback settings. Select "Yes" to enable the setting, and "No" to disable the setting. The temperature range and the start/stop times can be set. Use to check the filter status. The filter sign can be reset. Use to check error information when an error occurs. Check code, error source, refrigerant address, unit model, manufacturing number, contact information (dealer's phone number) can be displayed. (The unit model, manufacturing number, and contact information need to be registered in advance to be displayed.) Use to set the vane angle for each vane to a fixed position. Initial setting Clock Use to set the current time. Main display Use to switch between "Full" and "Basic" modes for the Main display. The initial setting is "Full." Contrast Use to adjust screen contrast. Language selection Use to select the desired language. * Clock setting is required. 0 Continue to the next page

11 Setting and display items Setting details Service Function setting Use to make settings for indoor unit's functions. (City Multi) Input Select "Input maintenance Info." from the Service menu to bring up the Maintenance maintenance information screen. The following settings can be made from the Maintenance Information screen. Model name input Serial No. input Dealer information input Function setting Make the settings for the indoor unit functions via the remote controller as necessary. (City Multi only) LOSSNAY setting (City Multi only) Check Self check Maintenance password Remote controller check This setting is required only when the operation of City Multi units is interlocked with LOSSNAY units. Error history: Display the error history and execute delete error history. Refrigerant leak check: Refrigerant leaks can be judged. Smooth maintenance: The indoor and outdoor maintenance data can be displayed. Request cord: Details of the operation data including each thermistor temperature and error history can be checked. Error history of each unit can be checked via the remote controller. Take the following steps to change the maintenance password. When the remote controller does not work properly, use the remote controller checking function to troublushoot the problem.

12 -. Wired remote controller <PAR-MAA> Display Section For the purpose of explanation, all parts of the display are shown. During actual operation, only the relevant items will be lit. Identifies the current operation Shows the operating mode, etc. *Multilanguage display is available. Day-of-Week Shows the current day of the week. Time/Timer Display Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, the time to be switched off is shown. Sensor indication Displays when the remote controller sensor is used. Locked indicator Indicates that remote controller buttons have been locked. Clean The Filter indicator To be displayed on when it is time to clean the filter. Centrally Controlled indicator Indicates that operation from the remote controller has been prohibited by a master controller. Timer is Off indicator Indicates that the timer is off. Temperature Setting Shows the target temperature. F C TIME SUN M TUE WED THU FRI SAT TIMER Hr AFTER AFTER ERROR CODE F C LYHr. Up/Down Air Direction indicator The indicator shows the direction of the outcoming airflow. One Hour Only indicator Displays if the airflow is set to low or downward during COOL or DRY mode. (Operation varies according to model.) The indicator goes off in hour, when the airflow direction also changes. FUNCTI FILTER WEEKLY SIMPLE AUTO Room Temperature display Shows the room temperature. The room temperature display range is 8 9:. The display blinks if the temperature is less than 8: or 9: or more. Louver display Indicates the action of the swing louver. Does not appear if the louver is not running. (Power On indicator) Indicates that the power is on. Timer indicators The indicator comes on if the corresponding timer is set. Fan Speed indicator Shows the selected fan speed. Ventilation indicator Appears when the unit is running in Ventilation mode. Operation Section Temperature setting buttons Down Up Timer Menu button (Monitor/Set button) Mode button (Return button) / button Fan Speed button Filter button (<Enter> button) TEMP. / Test Run button Set Time buttons Check button (Clear button) Back MENU / FILTER Ahead Timer On/Off button (Set Day button) BACK PAR-MAA MITOR/SET DAY CLOCK OPERATI CHECK TEST CLEAR Airflow Up/Down button Louver button ( Operation button) Opening the cover To return operation number Built-in temperature sensor Ventilation button ( Operation button) To go to next operation number Note: PLEASE WAIT message This message is displayed for approximately minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure. NOT AVAILABLE message This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have). If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as far as any of the indoor units is equipped with the function.

13 -4. Wireless remote controller CHECK TEST RUN display CHECK and TEST RUN display indicate that the unit is being checked or test-run. MODEL SELECT display Blinks when model is selected. display Lights up while the signal is transmitted to the indoor unit when the button is pressed. display SET TEMP. display indicates the set desired temperature. display OPERATI MODE display Operation mode display indicates which operation mode is in effect. display The vertical direction of air flow is indicated. display FAN SPEED display indicates which fan speed has been selected. / button The unit is turned and alternately each time the button is pressed. FAN SPEED SELECT button Used to change the fan speed. MODE SELECT button Used to switch the operation mode between cooling, drying, fan, heating and auto mode. Note: In case the outdoor unit is cool only type, the heating and auto mode are not available. CHECK-TEST RUN buttons Only press this button to perform an inspection check or test operation. Do not use it for normal operation. VANE CTROL button Used to change the air flow / TEMP MODE CHECK CHECK TEST RUN MODEL SELECT C AMPM AMPM NOT AVAILABLE FAN AUTO STOP VANE AUTO START LOUVER h TEST RUN min SET RESET CLOCK CLOCK display Displays the current time. TIMER display Displays when in timer operation or when setting timer. display Displays the order of timer operation. display Displays whether timer is on or off. buttons SET TEMPERATURE button sets any desired room temperature. TIMER CTROL buttons AUTO STOP ( timer): when this switch is set, the air conditioner will be automatically stopped at the preset time. AUTO START ( timer): when this switch is set, the air conditioner will be automatically started at the preset time. h and min buttons Buttons used to set the hour and minute of the current time and timer settings. LOUVER button Changes left/right airflow direction. (Not available for this model.) CLOCK button RESET button SET button

14 SPECIFICATIS -. SPECIFICATIS Model Power source Cooling capacity * (Nominal) * * * Power input Current input Heating capacity (Nominal ) External finish External dimension H W D Net weight Decoration panel Heat exchanger FAN Type Quantity External static press. Motor type Motor output kw Driving mechanism Noise level (Low-Mid-High) (measured in anechoic room) Insulation material Air filter Protection device Refrigerant control device Connectable outdoor unit Diameter of Liquid refrigerant pipe Gas Field drain pipe size Standard attachment Remark * * * Power input Current input Model External finish Dimension mm H W D in Net Weight kg (lb) Cord heater kw Airflow rate (Low-Mid-High) Document Accessory Optional parts kw kcal/ h BTU/ h kcal/ h kw A kw kcal/ h BTU/ h kw A mm in kg (lb) m / min L / s cfm db <A> mm (in) mm (in) mm (in) PLFY-PVCM-E.7,40,800, ,600 6, /4" -/" -/" () SLP-AAW or SLP-ALW /6" -/8" -/8" (7) Pa (0 mmho) ø6. (ø/4") Flare ø.7 (ø/") Flare PLFY-P0VCM-E PLFY-PVCM-E PLFY-PVCM-E Single phase V 0Hz..8.6,900,400,00 7,00 9,600,00,000,00, ,00,800,400 8,00 0,900, Unit: Galvanized sheets with grey heat insulation /4" -/" -/" () SLP-AAW or SLP-ALW SLP-AAW or SLP-ALW SLP-AAW or SLP-ALW SLP-AAW or SLP-ALW White Munsell(6.4Y 8.9/0.4) /6" -/8" -/8" /6" -/8" -/8" /6" -/8" -/8" /6" -/8" -/8" (7) (7) (7) (7) Cross fin (Aluminum fin and copper tube) Turbo fan 0 Pa (0 mmho) 0 Pa (0 mmho) 0 Pa (0 mmho) Single phase induction motor 0.0 Direct-driven by motor ø6. (ø/4") Flare ø.7 (ø/") Flare /4" -/" -/" () Polyethylene foam PP honeycomb fabric (long life type) Fuse LEV R40A, R407C, R CITY MULTI ø6. (ø/4") Flare ø.7 (ø/") Flare /4" -/" -/" 6. (7) ø6. (ø/4") Flare ø.7 (ø/") Flare O.D. mm (-/4") (PVC pipe VP- connectable) Installation manual, Instruction book Drain hose I.D. mm (-/4"), Wireless junction cable Decoration panel : SLP-AAW or SLP-ALW *PLFY-P-VCM-E should use together with Decoration panel. PLFY-P40VCM-E 4.,900,400 4, ,00 7, /4" -/" -/" 6. (7) 0 Pa (0 mmho) ø6. (ø/4") Flare ø.7 (ø/") Flare Installation Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and other items shall be referred to the Installation Manual. Note : * Nominal cooling condition * Nominal cooling condition Indoor : Outdoor : Pipe length : Level difference : 7 CDB/9 CWB (8 FDB/66 FWB) CDB (9 FDB) 7. m (4-9/6 ft) 0 m (0 ft) 7 CDB/9. CWB (8 FDB/67 FWB) CDB (9 FDB) m (6-/8 ft) 0 m (0 ft) Nominal conditions * and * are subject to JIS B86-. Due to continuing improvement, above specification may be subject to change without notice. * Nominal heating condition Unit converter 0 CDB (68 FDB) 7 CDB/6 CWB (4 FDB/4 FWB) 7. m (4-9/6 ft) 0 m (0 ft) kcal = kw 860 BTU/h = kw,4 cfm = m /min x. lb = kg /

15 -. ELECTRICAL PARTS SPECIFICATIS Parts name Service ref. Symbol Thermistor (Room temperature TH detection) Thermistor (Pipe temperature TH detection/ Liquid) Thermistor (Pipe temperature TH detection/ Gas) Fuse (Indoor controller board) FUSE PLFY-PVCM-E.TH PLFY-P0VCM-E.TH PLFY-PVCM-E.TH PLFY-PVCM-E.TH PLFY-P40VCM-E.TH Resistance 0:/k", 0:/9.6k", 0:/6.k", :/.4k", 0:/4.k", 40:/.0k" Resistance 0:/k", 0:/9.6k", 0:/6.k", :/.4k", 0:/4.k", 40:/.0k" Resistance 0:/k", 0:/9.6k", 0:/6.k", :/.4k", 0:/4.k", 40:/.0k" 0V 6.A Fan motor Vane motor Drain pump MF MV DP OUTPUT 0 W MSBPC0M DCV 00"/phase PLD-0ME- INPUT /0.8W 4R/Hr Drain sensor DS Thermistor resistance 0:/6k", 0:/.9k", 0:/.6k", :/.k", 0:/.8k", 40:/.k" Linear expansion valve [coil] Electric heater (Condensation proof) Power supply terminal block Transmission terminal block MA remote controller terminal block LEV H TB TB TB DCV Stepping motor drive, Port dimension [. (0~000pulse) EDM-40YGME 40V W (L, N, ;) Rated to 0V 0A* (M, M, S) Rated to 0V 0A* (, ) Rated to 0V 0A* * Refer to WIRING DIAGRAM for the supplied voltage.

16 4 4-WAY AIR FLOW SYSTEM 4-. FRESH AIR INTAKE (Location for installation) At the time of installation, use the duct holes (cut out) located at the positions shown in following diagram, as and when required. Fresh air intake Detail drawing of fresh air intake [00 -[.8 hole Burring hole [7.4 Cut out hole Ceiling surface Refrigerant pipe Electrical Box Drain pipe 4-. FRESH AIR INTAKE AMOUNT & STATIC PRESSURE CHARACTERISTICS PLFY-PVCM-E.TH PLFY-P0VCM-E.TH PLFY-PVCM-E.TH PLFY-PVCM-E.TH PLFY-P40VCM-E.TH Taking air into the unit Static pressure : P [Pa] 0 Air flow : Q [m /min] NOTE: Fresh air intake amount should be 0% or less of whole air amount to prevent dew dripping. How to read curves 0 Curve in the left graphs Q Q Qa Q Duct characteristics at site B A A E C A D C Q Designed amount of fresh air intake <m /min> A Static pressure loss of fresh air intake duct system with air flow amount Q <Pa> B Forced static pressure at air conditioner inlet with air flow amount Q <Pa> C Static pressure of booster fan with air flow amount Q <Pa> D Static pressure loss increase amount of fresh air intake duct system for air flow amount Q <Pa> E Static pressure of indoor unit with air flow amount Q <Pa> Qa Estimated amount of fresh air intake without D <m /min> 4-. OPERATI IN CJUNCTI WITH DUCT FAN (Booster fan) Whenever the indoor unit operates, the duct fun also operates. () Connect the optional multiple remote controller adapter(pac-sa88ha-e) to the connector CN on the indoor controller board. () Drive the relay after connecting the V DC relay between the Yellow and Orange connector wires. MB: Electromagnetic switch power relay for duct fan. X: Auxiliary relay (For DC V, coil rating:.0w or below) CN on indoor unit board Green Connector (P) Be sure to secure insulation material by tape, etc. Yellow Orange + Red Brown Indoor unit side Multiple remote controller adapter PAC-SA88HA-E Indoor controller board ~ Installation at site MB Be sure to secure insulation material by tape, etc. Distance between indoor controller board and relay must be within 0m. CN Multiple remote controller adapter PAC-SA88HA-E 6

17 4-4. FIXING HORIZTAL VANE Horizontal vane of each air outlet can be fixed according to the environment where it is installed. Setting procedures ) Turn off a main power supply (Turn off a breaker). ) Disconnect the vane motor connector of the direction of the arrow with pressing the unlocking button as shown in figure below. Insulate the disconnected connector with the plastic tape. Vane motor Vane motor Connector Unlocking button Horizontal vane ) Set a vertical vane of the air outlet, which is to be fixed by the hand slowly within the range in the table below. Measured standard position of the grille Horizontal vane <Set range> Standard of horizontal position Level 0 (Min.) Downward 4 Downward Downward 70 (Max.) Dimension A (mm) 8 0 Note: Dimension between mm and 0 mm can be arbitrarily set. Caution Do not set the dimension out of the range.. Erroneous setting could cause dew drips, smudge on ceiling or malfunction of unit. 7

18 OUTLINES AND DIMENSIS PLFY-PVCM-E.TH PLFY-P0VCM-E.TH PLFY-PVCM-E.TH PLFY-PVCM-E.TH PLFY-P40VCM-E.TH Unit: mm ~7 Fresh air intake Ceiling hole 0 Suspension bolt pitch Detail drawing of fresh air intake [00 [7.4 -[.8 Cut out hole Burring hole 99 ~7 76~60 Ceiling hole ~7 Ceiling surface Drain pipe VP- connection (O.D.[) Wiring entry Suspension bolt M0 or W/8 Grille V/M 0 Air outlet hole Brand label Grille Drain hole V/M Auto vane 0 Air outlet hole 77 Air intake hole Terminal block Ceiling surface ~60 40 Suspension bolt pitch ~ ~8 Suspension bolt lower edge Models V/M 77 Air intake hole V/M Air intake grille Vane motor PLFY-PVCM-E PLFY-P0VCM-E PLFY-PVCM-E PLFY-PVCM-E PLFY-P40VCM-E Refrigetant pipe (6.mm dia.) flared connection /4 inch Refrigetant pipe (.7mm dia.) flared connection / inch 8

19 7 7 6 WIRING DIAGRAM PLFY-PVCM-E.TH PLFY-P0VCM-E.TH PLFY-PVCM-E.TH PLFY-PVCM-E.TH PLFY-P40VCM-E.TH [LEGEND] SYMBOL NAME SYMBOL NAME I.B INDOOR CTROLLER BOARD MV VANE MOTOR CN REMOTE SWITCH TB TERMINAL POWER SUPPLY CN4 JEMA HA TERMINAL-A TB BLOCK TRANSMISSI CN CENTRALLY CTROL TB MA-REMOTE CTROLLER CN REMOTE INDICATI TH THERMISTOR ROOM TEMP DETECTI CN0 IT TERMINAL (0 C/kΩ, C/.4kΩ) F FUSE(T6.AL 0V) TH PIPE TEMP DETECTI/LIQUID SW MODE SELECTI (0 C/kΩ, C/.4kΩ) SW CAPACITY CODE TH PIPE TEMP DETECTI/GAS SW MODE SELECTI (0 C/kΩ, C/.4kΩ) SW4 MODEL SELECTI OPTI PART SW ADDRESS SETTING s DIGIT W.B PCB FOR WIRELESS REMOTE CTROLLER SW ADDRESS SETTING 0ths DIGIT BZ BUZZER SW4 BRANCH No. LED LED(OPERATI INDICATOR:GREEN) SWE DRAIN PUMP(TEST MODE) LED LED(PREPARATI FOR HEATING:ORANGE) X DRAIN PUMP/DEW PREVENTI HEATER RU RECEIVING UNIT DP DRAIN PUMP SW EMERGENCY OPERATI(HEAT) DS DRAIN SENSOR SW EMERGENCY OPERATI(COOL) H DEW PREVENTI HEATER LEV MF LINEAR EXPANSI VALVE FAN MOTOR MF MS See fig * ~ GRILLE * Case of wireless grille type W.B LED LED M MV M MV M MV M MV CNB BZ SW SW RU H 9 BRN RED ORN YLW BLU VLT GRY PINK SKY BLU RED ORN YLW WHT BLU YLW YLW DS t TH t TH t TH t I.B SW SW SW SW SW4 SW SW J4 LED Pair No. J4 BRANCH 0ths s No. DIGIT DIGIT CN 7 6 (WHT) CNMF 4 (WHT) CN (WHT) SWE A B C D E F CN4 (WHT) CN (GRN) 0 4 CN (WHT) CN0 (RED) CN9 (BLK) CN (WHT) 9 CN90 (WHT) CN6V CN60 (GRN) (WHT) BRN RED BLU ORN M LEV YLW WHT CN0 (RED) LED BLU YLW WHT BLK <fig.*> MODELS SW P 46 P0 46 P 46 P 46 P40 46 The black square ( ) indicates a switch position. <*> RED RED BLU BLK ORN ORN CNA (BLU) BLU BLU CNM (BLU) CNP (BLU) + X CNC (RED) F CND (BLK) TB TB M M S TB RED L BLU N GRN/YLW YLW YLW YLW YLW TO MA-REMOTE CTROLLER DC8.7-V TO OUTDOOR UNIT BC CTROLLER M-NET REMOTE CTROLLER DC4-0V DP M ~ PULL BOX FUSE (6A) TO NEXT INDOOR UNIT BREAKER (6A) POWER SUPPLY ~/N0-40V 0Hz Notes:.At servicing for outdoor unit,always follow the wiring diagram of outdoor unit..in case of using MA-Remote controller, please connect to TB. (Remote controller wire is non-polar.).in case of using M-NET, please connect to TB. (Transmission line is non-polar.) 4.Symbol [S]of TB is the shield wire connection..symbols used in wiring diagram above are, : terminal block, : connecter. 6.The setting of the SW dip switches differs in the capacity. For the detail, refer to the fig:*. LED on indoor board for service Mark Meaning Function LED Main power supply Main power supply (Indoor unit) Power on Iamp is lit LED Power supply for MA-Remote controller Power supply for MA-Remote controller on Iamp is lit 9

20 7 REFRIGERANT SYSTEM DIAGRAM PLFY-PVCM-E.TH PLFY-P0VCM-E.TH PLFY-PVCM-E.TH PLFY-PVCM-E.TH PLFY-P40VCM-E.TH Thermistor (Pipe temperature detection/ Gas) TH Strainer (#0mesh) Gas pipe Thermistor (Pipe temperature detection/ Liquid) TH Flare connection Heat exchanger Liquid pipe Linear expansion valve Strainer (#0mesh) Strainer (#00mesh) Strainer (#00mesh) Thermistor (Room temparature detection) TH Unit: mm (inch) Gas pipe Liquid pipe [.7(/) [6.(/4) 0

21 8 TROUBLESHOOTING 8-. COUNTERMEASURES FOR ERROR DURING TEST RUN If a problem occurs during test run, a code number will appear on the remote controller (or LED on the outdoor unit), and the air conditioning system will automatically cease operating. Refer to the connected outdoor unit service manual in order to determine the nature of the abnormality and apply corrective measure. Check code Trouble Indoor Detected Unit Outdoor Remote Controller Remarks 040 Serial communication error Outdoor unit Multi controller board ~ Power board communication trouble 0 Compressor temperature Check delay code 0 00 Low pressure 0 High pressure Check delay code Superheat due to low discharge temperature Check delay code Refrigerant shortage Check delay code 60 Blocked valve in cooling mode Check delay code way valve trouble in heating mode Check delay code Water leakage 0 Drain over flow protection 0 Drain sensor abnormality 400 Compressor current interruption (locked compressor) Check delay code Compressor overcurrent interruption 40 Voltage shortage/overvoltage/pam error/lopen phase/power synchronization Check delay code 40 signal error 40 Heat Sink temperature Check delay code Power module Check delay code Rotational frequency of outdoor fan motor Check delay code Air inlet thermistor trouble (TH) or Compressor temperature thermistor (TH4) open/short Check delay code 0 0 Liquid pipe temperature thermistor trouble (TH) Suction pipe temperature thermistor (TH6) open/short Check delay code 0 Gas pipe temperature thermistor trouble (TH) 0 Outdoor liquid pipe temperature thermistor (TH) open/short Check delay code 0 06 Ambient thermistor (TH7) open/short Check delay code 09 HIC pipe temperature thermistor (TH) open/short Check delay code 0 Heat Sink temperature thermistor (TH8) open/short Check delay code 4 0 High pressure sensor (6HS) Check delay code 40 0 Low pressure sensor (6LS) Check delay code Contact failure of drain float switch 6600 Duplex address error Only M-NET Remote controller is detected. 660 Transmission processor hardware error Only M-NET Remote controller is detected. 660 Transmission bus BUSY error Only M-NET Remote controller is detected Signal communication error with transmission processor Only M-NET Remote controller is detected No ACK error Only M-NET Remote controller is detected. * 6608 No response frame error Only M-NET Remote controller is detected. * 68 MA communication receive error (no receive signal) Only MA Remote controller is detected. 68 MA communication send error Only MA Remote controller is detected. 68 MA communication send error Only MA Remote controller is detected. 684 MA communication receive error Only MA Remote controller is detected. 700 Total capacity error 70 Capacity code error 70 Connecting excessive number of units 70 Address setting error Note: When the outdoor unit detects No ACK error/no response error, an object indoor unit is treated as a stop, and not assumed to be abnormal. *Abnormality for PWFY series

22 8-. HOW TO CHECK THE PARTS PLFY-PVCM-E.TH PLFY-P0VCM-E.TH PLFY-PVCM-E.TH PLFY-PVCM-E.TH PLFY-P40VCM-E.TH Parts name Thermistor (TH) (Room temperature detection) Thermistor (TH) (Pipe temperature detection/ Liqid) Thermistor (TH) (Pipe temperature detection/ Gas) Vane motor (MV) White Orange Red Blue M Yellow Check points Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 0 to 0:) Normal 4. to 9.6 k" Abnormal Open or short Measure the resistance between the terminals with a tester. (At the ambient temperature 0 to 0:) Connector Normal Abnormal Red Yellow Red Blue Red Orange 00" Open or short Red White Refer to Thermistor characteristic graph. Linear expansion valve (LEV) Blue M Brown Yellow White Red Orange Drain pump (DP) Relay connector Yellow Yellow Disconnect the connector then measure the valve resistance with a tester. Normal White-Red Yellow-Brown Orange-Red Blue-Brown 00" i0% Measure the resistance between the terminals with a tester. (At the ambient temperature 0 to 0:) Normal Abnormal 90 " Open or short Abnormal Open or short Refer to the next page for the details. Drain sensor (DS) Measure the resistance after minutes have passed since the power supply was intercepted. (At the ambient temperature 0 to 60:) Normal 0.6 to 6.0k" Abnormal Open or short Refer to the next page for the details.

23 <Thermistor Characteristic Graph> Thermistor for lower temperature Thermistor R0= kω ± % Fixed number of B=480 ± % Rt=exp { 480( ) } 7+t 7 0: kω 0: 9.6 kω 0: 6. kω :.4 kω 0: 4. kω 40:.0 kω Thermistor for drain sensor Thermistor R0=6.0 kω ±% Fixed number of B=90 ±% Rt=6exp { 90( ) } 7+t 7 0: 6.0 kω 0:.9 kω 0:.6 kω :. kω 0:.8 kω 40:. kω 60: 0.6 kω Linear expansion valve Thermistor (TH) (Room temperature detection) Thermistor (TH) (Pipe temperature detection/ Liquid) Thermistor (TH) (Pipe temperature detection/ Gas) Resistance (k") < Thermistor for lower temperature > Temperature (:) Operation summary of the linear expansion valve Linear expansion valves open/close through the use of a stepping motor after receiving the pulse signal from the indoor controller board. Valve position can be changed in proportion to the number of pulse signals. <Connection between the indoor controller board and the linear expansion valve> Resistance (k") < Thermistor for drain sensor > Temperature (:) Controller board DCV Linear expansion valve Brown 6 White 4 Blue [4 M 6 Brown [ [ [ Yellow Red Orange [4 [ [ [ Red Blue Orange Yellow White Drive circuit 4 [4 [ [ [ Connector(CN60) Note : Since the number of the connector at the controller board side and the relay connector are different, follow the color of the lead wire.

24 <Output pulse signal and the valve operation> Output (Phase) { { { {4 Output Linear expansion valve operation Open Valve position (capacity) Close A Troubleshooting E B Close Extra tightening (00~800pulse) Open D Pulse number 4 C Closing a valve : 4 Opening a valve : 4 4 The output pulse shifts in above order. When linear expansion valve operation stops, all output phases become. At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will lock and vibrate. When the switch is turned on, 00 pulse closing valve signal will be send till it goes to point A in order to define the valve position. When the valve moves smoothly, there is no sound or vibration occurring from the linear expansion valves : however, when the pulse number moves from E to A or when the valve is locked, more sound can be heard than in a normal situation. Sound can be detected by placing the ear against the screw driver handle while putting the screw driver tip to the linear expansion valve. Outdoor unit R40A model : 400 pulse Outdoor unit R/R407C model : 000 pulse Opening a valve all the way Symptom Operation circuit failure of the micro processor Linear expansion valve mechanism is locked. Short or breakage of the motor coil of the linear expansion valve Valve does not close completely. Wrong connection of the connector or contact failure Check points Disconnect the connector on the controller board, then connect LED for checking. 6 4 k" LED When power is turned on, pulse signals will be output for 0 seconds. There must be some defects in the operation circuit if the LED does not light while the signals are output or keeps lighting even after the signals stop. Countermeasures Exchange the indoor controller board at drive circuit failure. Motor will idle and make a ticking noise when the motor is Exchange the linear expansion valve. operated while the linear expansion valve is locked. This ticking sound is the sign of the abnormality. Measure the resistance between each coil (white-red, yellowbrown, orange-red, blue-brown) with a tester. It is normal if the resistance is in the range of 00 ±0%. Thermistor (Liquid pipe) Linear expansion valve To check the linear expansion valve, operate the indoor unit If large amount of refrigerant is leaked, exchange in fan mode and at the same time operate other indoor units in cooling mode, then check the pipe temperature <liquid the linear expansion valve. pipe temperature> of the indoor unit by the outdoor multi controller board operation monitor. During fan operation, linear expansion valve is closed completely and if there is any leaking, detecting temperature of the thermistor will go lower. If the detected temperature is much lower than the temperature indicated in the remote controller, it means the valve is not closed all the way. It is not necessary to exchange the linear expansion valve, if the leakage is small and not affecting normal operation. Check the color of lead wire and missing terminal of the connector. Exchange the linear expansion valve. Disconnect the connector at the controller board, then check the continuity. 4

25 <DC Fan motor (fan motor/indoor controller board)> Check method of indoor fan motor (fan motor/indoor controller board) Notes High voltage is applied to the connecter (CNMF) for the fan motor. Pay attention to the service. Do not pull out the connector (CNMF) for the motor with the power supply on. (It causes trouble of the indoor controller board and fan motor) Self check Conditions : The indoor fan cannot turn around. Indoor controller board fuse check Is the fuse normal? Yes Wiring contact check Contact of fan motor connector (CNMF) No Is the resistance between the terminals of drain pump normal? No Replace the drain pump. Yes Replace the fan motor. Replace the indoor controller board. Is there contact failure? Yes Wiring recovery No Power supply check (Remove the connector (CNMF)) Measure the voltage in the indoor controller circuit board. TEST POINT : VDC (between (+) and 4 (-) of the fan connector): VDC DC 0~40 V TEST POINT : VCC (between (+) and 4 (-) of the fan connector): VCC DC V Is the voltage normal? Yes Replace the fan motor. No Replace indoor controller board Check the operation OK END Check the operation of fan. NG Replace indoor controller board. OK END NG Replace the fan motor.

26 8-. FUNCTI OF DIP SWITCH Switch Pole Function Operation by switch Effective timing Remarks Thermistor <Room temperature detection> position Built-in remote controller Indoor unit Indoor controller board Filter clogging detection Provided Not provided <Initial setting> Filter cleaning,00h 00h 4 Fresh air intake Effective Not effective SW Remote indication switching Thermo signal indication Fan output indication Function Under Selection 6 Humidifier control Fan operation at Heating mode Thermo operation at heating mode suspension 7 Air flow set in case of Low * Extra low * 8 Heat thermo Setting air flow * Depends on SW-7 9 Auto restart function Effective Not effective 0 Power / Effective Not effective Indoor controller board Capacity SW Capacity SW Capacity SW SW Capacity code setting ~6 P P P P P Before power supply <Initial setting> Set for each capacity. 4 Heat pump / Cooling only Louver Vane Vane swing function Cooling only Heat pump Available Available Not available Not available Indoor controller board Set while the unit is off. <Initial setting> SW Function setting 6 Vane horizontal angle Vane cooling limit angle setting * Second setting * 4 Horizontal angle First setting Down A, B, C, D Under suspension 7 Indoor linear expansion valve opening Effective Not effective 8 Heat 4degrees up Not effective Effective 9 Superheat setting temperature * 0 Sub cool setting temperature * SW4 Unit Selection ~ When replacing the indoor controller board, make sure to set the switch to the initial setting, which is shown below. 4 Before power supply Indoor controller board * Refer to the <Table A> below. * At cooling mode, each angle can be used only hour. * Do not use SW-9, 0 as trouble might be caused by the usage condition. * 4 Second setting is the same as the first setting. <Table A> SW -7 SW -8 Extra low Low Setting air flow stop 6 Continue to the next page

27 Pole Operation by switch Effective timing Remarks SW s digit address setting SW 0ths digit address setting SW4 Connection No. setting Rotary switch Rotary switch SW SW E D 4 C B A F SW Address setting should be done when M-NET remote controller is being used. This is the switch to be used when the indoor unit is operated with R series outdoor unit as a set. Before power supply Indoor controller board <Initial setting> SW E D C B A F SW Indoor controller board <Initial setting> SW4 J4, J4 Wireless remote controller Pair No. Jumper To operate each indoor unit by each remote controller when installed indoor units or more are near, Pair No. setting is necessary. Pair No. setting is available with the 4 patterns (Setting patterns. A to D). Make setting for J4, J4 of indoor controller board and the Pair No. of wireless remote controller. You may not set it when operating it by one remote controller. Setting for indoor unit Cut jumper wire J4, J4 on the indoor controller board according to the table below. Wireless remote controller pair number: Setting operation. Press the SET button (using a pointed implement). Check that the remote controller's display has stopped before continuing. MODEL SELECT flashes, and the model No. ( digits) appears (steadily-lit).. Press the MINUTE button twice. The pair number appears flashing.. Press the temperature buttons to select the pair number to set. 4. Press the SET button (using a pointed implement). The set pair number is displayed (steadily-lit) for seconds, then disappears. Under operation or suspension SET button <Initial setting> Pattern A / MODE CHECK TEST RUN SET MODEL SELECT FAN VANE LOUVER RESET TEMP CLOCK AUTO STOP AUTO START h min Pair No. Model No. Temperature button Minute button Setting pattern Indoor controller Pair No. of wireless jumper wire remote controller * J4 J4 A 0 B Cut C Cut D Cut Cut * Pair No.4-9 of wireless remote controller is setting pattern D. Initial setting 7

28 8-4. TEST POINT DIAGRAM Indoor controller board PLFY-PVCM-E.TH PLFY-P0VCM-E.TH PLFY-PVCM-E.TH PLFY-PVCM-E.TH PLFY-P40VCM-E.TH CNM Connect to the terminal block (TB) (M-NET transmission connecting wire) 4-0V DC (non-polar) CNP Drain pump output (DP) Between to 0-40V AC CNC Dew prevention heater (H) (0~40V AC) CNA Connect to the terminal block (TB) (MA-Remote controller connecting wire) Between to 8.7-V DC (Pin (+)) CND Power supply for indoor controller board Between to 0-40V AC F 6.A 0V CNMF Fan motor output (MF) LED Power supply for MA-Remote controller SW4 Model selection SW Function setting Jumper wire J4, J4 Pair No. setting for wireless remote controller SW Capacity setting SW Address setting s DIGIT SW Model selection SW Address setting 0ths DIGIT SW4 Branch No. CN Connector (Remote switch) CN Connecter (Humidifier) CN7 Connector (Damper) VDC ( : +) CN Pipe temperature detection/liquid (TH) CN Drain sensor (DS) CN9 Pipe temperature detection/gas (TH) CN0 Room temperature detection (TH) LED Main power supply (Indoor unit : 0-40V) CN60 Linear expansion valve output (LEV) CN90 Connect to the wireless junction cable CN6V Vane motor output (MV) CN Remote indicator -: Status lamp VDC ( : +) Fan motor output (SW- ) Thermostat (SW- ) -: Cooling/Dry status lamp VDC ( : +) -4: Heating status lamp VDC ( : +) When only demand input is used -: Demand input / input ( : +) CN Centrally control -: Control signal VDC pulse input (: +) -4: Operation indicator VDC (: +) -: Malfunction indicator VDC (: +) Note: The voltage range of DCV in this page is between DC. V to DC.7 V. 8

29 9 DISASSEMBLY PROCEDURE PLFY-PVCM-E.TH PLFY-PVCM-E.TH PLFY-P0VCM-E.TH PLFY-PVCM-E.TH PLFY-P40VCM-E.TH Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS & ILLUSTRATIS. Removing the air intake grille () Slide the knob of air intake grille to the direction of the arrow to open the air intake grille. () Remove the string hook from the panel to prevent the grille from dropping. () Slide the hinge of the intake grille to the direction of the arrow and remove the air intake grille.. Removing the fan guard () Open the air intake grille. () Remove the screws of fan guard. Figure Air intake grille Air intake grille knob Grille Photo Fan guard Screws Air intake grille. Removing the panel () Remove the air intake grille. (Refer to procedure ) Corner panel (See Figure ) () Remove the screw of the corner. () Slide the corner panel to the direction of the arrow, and remove the corner panel. Panel (See Photo ) () Disconnect the connector that connects with the unit. () Remove the screws from the panel and loose other screws fixed to the oval hole, have different diameter. (4) Rotate the panel a little to remove the screws. (Slide the panel so that the screw comes to a larger diameter of the oval hole, which has different diameters.) Figure Corner panel Panel Photo Screws Connector Screws Panel Photo 4. Removing the electrical parts () Remove the screws and the control box cover. <Electrical parts in the control box> Indoor controller board (I.B) Fuse (FUSE) Varistor (ZNR) Terminal block (TB) Indoor controller board (I.B) Indoor controller box Corner Screw panel 9 Varistor (ZNR) Terminal block (TB) Fuse (FUSE) Terminal block (TB) Varistor Terminal (ZNR) block (TB)

30 OPERATING PROCEDURE PHOTOS & ILLUSTRATIS. Removing the room temperature detection (TH) () Remove the panel. (Refer to procedure ) () Pull out the room temperature detection from the drain pan. () Remove the screws fixed to the control box cover, and remove the control box cover. (4) Remove the connector (CN0) from the indoor controller board, and disconnect the room temperature detection. Photo 4 Connectors Drain plug Control box Screw Screw Room temperature detection (TH) 6. Removing the drain pan () Remove the panel. (Refer to procedure ) () Remove the room temperature detection and the lead wires held with fastener; wireless controller board relay connector (9P red) and panel relay connector (0P white). () Remove the 4 screws fixed to the drain pan, and remove the drain pan. (4) Remove the fan guard. (Refer to procedure ) 7. Removing the pipe temperature detection/liquid (TH) and pipe temperature detection/gas (TH) () Remove the panel. (Refer to procedure ) () Remove the drain pan. (Refer to procedure 6) () Disconnect the pipe temperature detection/liquid or the pipe temperature detection/gas from the holder. (4) Remove the screws fixed to the piping cover, and remove the piping cover. (See Photo 9) () Remove the screws fixed to the control box cover, and remove the control box cover. Drain pan Screw Screw Fan guard Photo LEV Control box Pipe temperature detection/liquid (TH) (6) Remove the connector (CN) from the indoor controller board, and disconnect the pipe temperature detection/liquid. Pipe temperature detection/gas (TH) (6) Remove the connector (CN9) from the indoor controller board, and disconnect the pipe temperature detection/gas with its holder. Thermistor (Pipe temperature detection/ Liquid) (TH) 8. Removing the fan motor (MF) () Remove the panel. (Refer to procedure ) () Remove the drain pan. (Refer to procedure 6) () Remove the nut and the washer from the turbo fan, and remove the turbo fan. (4) Remove the screws fixed to the control box cover, and remove the control box cover. () Disconnect the connector of the FAN from the indoor controller board. (6) Remove the screws fixed to the piping cover, and remove the piping cover. (See Photo 9) (7) Remove the 6 screws fixed to the flat plate, and remove the flat plate. (8) Disconnect the lead wires to the direction of the fan motor, and remove the nuts of the fan motor. Photo 6 Flat plate Screws 0 Screw Nut Fan motor (MF) Nut Lead wires Screws Screw Thermistor (Pipe temperature detection/ Gas) (TH) Nut

31 OPERATING PROCEDURE PHOTOS & ILLUSTRATIS 9. Removing the drain pump (DP) and drain sensor (DS) () Remove the panel. (Refer to procedure ) () Remove the drain pan. (Refer to procedure 6) () Remove the screws fixed to the control box cover, and remove the control box cover. (4) Remove the connectors of the (CNP) and the (CN) from the indoor controller board. () Remove the screw fixed to the cover, and remove the cover. (6) Disconnect the lead wires to the direction of the drain pump. (See Photo 7) (7) Remove the screws of the drain pump. (8) Cut the drain hose band, pull out the drain hose from the drain pump. (9) Pull out the drain pump. (0) Remove the drain sensor and the holder. Photo 7 Cover Screw Control box Lead wires Photo 8 Drain sensor (DS) Drain pump (DP) Drain hose Screws Screw 0. Removing the heat exchanger () Remove the panel. (Refer to procedure ) () Remove the drain pan. (Refer to procedure 6) () Remove the nut and the washer from the turbo fan, and remove the turbo fan. (4) Remove the screws fixed to the control box cover, and remove the control box cover. () Disconnect the connector of the FAN from the indoor controller board. (6) Remove the screws fixed to the piping cover, and remove the piping cover. (See Photo 9) (7) Remove the pipe temperature thermistor/liquid and condenser/evaporator temperature thermistor. (Refer to procedure 7) (8) Disconnect the lead wires to the direction of the fan motor. (9) Remove the coil support screw, the inside coil screws (See Photo 0), and the 4 outside coil screws (See Photo 9) from the heat exchanger, and remove the heat exchanger. Fixing band Control box Photo 9 Screws of piping cover Control box Coil screws Piping cover Photo 0 Lead wires Heat exchanger Coil screws Coil support Coil support screw

32 TM HEAD ICE : TOKYO BLDG., -7-, MARUNOUCHI, CHIYODA-KU TOKYO 00-80, JAPAN ccopyright 04 MITSUBISHI ELECTRIC CORPORATI Distributed in Jun. 04 No. Made in Japan New publication, effective Jun. 04 Specifications are subject to change without notice.