Order No: PAPAMY1206010CE Indoor Unit CS-S9NKV-7 CS-S12NKV-7 CS-S18NKV-7 CS-S22NKV-7 Outdoor Unit CU-S9NKV-7 CU-S12NKV-7 CU-S18NKV-7 CU-S22NKV-7 WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the products dealt with in this service information by anyone else could result in serious injury or death. PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit. Panasonic Appliances Air-Conditioning Malaysia Sdn. Bhd. 2012. Unauthorized copying and distribution is a violation of law.
TABLE OF CONTENTS 1. Safety Precautions...3 2. Specification...5 3. Location of Controls and Components...9 3.1 Indoor Unit...9 3.2 Outdoor Unit...9 3.3 Remote Control...9 4. Dimensions...10 4.1 Indoor Unit...10 4.2 Outdoor Unit...12 5. Refrigeration Cycle Diagram...14 5.1 CS-S9NKV-7 CU-S9NKV-7 CS-S12NKV-7 CU-S12NKV-7...14 5.2 CS-S18NKV-7 CU-S18NKV-7 CS-S22NKV-7 CU-S22NKV-7...15 6. Block Diagram...16 6.1 CS-S9NKV-7 CU-S9NKV-7...16 6.2 CS-S12NKV-7 CU-S12NKV-7...17 6.3 CS-S18NKV-7 CU-S18NKV-7 CS-S22NKV-7 CU-S22NKV-7...18 7. Wiring Connection Diagram...19 7.1 Indoor Unit...19 7.2 Outdoor Unit...21 8. Electronic Circuit Diagram...24 8.1 Indoor Unit...24 8.2 Outdoor Unit...26 9. Printed Circuit Board...29 9.1 Indoor Unit...29 9.2 Outdoor Unit...33 10. Installation Instruction...37 10.1 Select The Best Location...37 10.2 Indoor Unit...38 10.3 Outdoor Unit...43 11. Operation Control...46 11.1 Basic Function...46 11.2 Indoor Fan Motor Operation...47 11.3 Outdoor Fan Motor Operation (For S9/12/18NK)...47 11.4 Outdoor Fan Motor Operation (For S22NK)......47 11.5 Airflow Direction...48 11.6 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode)...49 11.7 Powerful Mode Operation...49 11.8 Timer Control...50 11.9 Random Auto Restart Control...50 11.10 Indication Panel...50 11.11 nanoe-g Operation...51 11.12 Mild Dry Cooling Operation...53 11.13 AUTO COMFORT and ECO NAVI Operation...54 12. Protection Control...63 12.1 Restart Control (Time Delay Safety Control)..... 63 12.2 30 Seconds Forced Operation... 63 12.3 Total Running Current Control... 63 12.4 IPM (Power Transistor) Prevention Control63 12.5 Compressor Overheating Prevention Control (For S18, S22NK only)... 64 12.6 Low Pressure Prevention Control (Gas Leakage Detection)... 64 12.7 Compressor Tank Temperature Rise Protection Control... 64 12.8 Low Frequency Protection Control 1... 64 12.9 Low Frequency Protection Control 2... 64 12.10 Outdoor Air Temperature Control... 65 12.11 Cooling Overload Control... 65 12.12 Freeze Prevention Control 1... 65 12.13 Freeze Prevention Control 2... 65 12.14 Dew Prevention Control... 65 12.15 Odor Cut Control... 66 13. Servicing Mode... 67 13.1 Auto Off/On Button... 67 13.2 Remote Control Button... 68 14. Troubleshooting Guide... 69 14.1 Refrigeration Cycle System... 69 14.2 Breakdown Self Diagnosis Function... 71 14.3 Error Code Table... 72 14.4 Troubleshooting Flowchart... 73 15. Disassembly and Assembly Instructions... 97 15.1 CS-S9NK CS-S12NK... 97 15.2 CS-S18NK CS-S22NK... 101 16. Technical Data... 105 16.1 Operation Characteristics... 105 17. Exploded View and Replacement Parts List113 17.1 Indoor Unit... 113 17.2 Outdoor Unit... 119 2
1. Safety Precautions Read the following SAFETY PRECAUTIONS carefully before perform any servicing. Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation or servicing due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications. WARNING CAUTION This indication shows the possibility of causing death or serious injury. This indication shows the possibility of causing injury or damage to properties. The items to be followed are classified by the symbols: This symbol denotes item that is PROHIBITED from doing. Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference. WARNING 1. Do not modify the machine, part, material during repairing service. 2. If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit. 3. Do not wrench the fasten terminal. Pull it out or insert it straightly. 4. Engage authorized dealer or specialist for installation and servicing. If installation of servicing done by the user is defective, it will cause water leakage, electrical shock or fire. 5. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire. 6. 7. 8. 9. 10. 11. 12. 13. 14. Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire or electrical shock. Install at a strong and firm location which is able to withstand the set s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury. For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire. This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it may cause electrical shock and fire in case equipment breakdown or insulation breakdown. Do not use joint cable for indoor/outdoor connection cable. Use the specified indoor/outdoor connection cable, refer to installation instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force will be acted on the terminal. If connecting or fixing is not perfect, it will cause heat up or fire at the connection. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause heat-up or fire at the connection point of terminal, fire or electrical shock. When install or relocate air conditioner, do not let any substance other than the specified refrigerant, eg. air etc. mix into refrigeration cycle (piping). (Mixing of air etc. will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.). Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may climb up to outdoor unit and cross over the handrail and causing accident. This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone. Otherwise, it may cause electrical shock in case equipment breakdown or insulation breakdown. 15. Keep away from small children, the thin film may cling to nose and mouth and prevent breathing. 16. 17. 18. Do not use unspecified cord, modified cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or fire. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage. For R410A models, when connecting the piping, do not use any existing (R22) pipes and flares nuts. Using such same may cause abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. In case of using existing (R22) pipes during installation of R410A models, must carry out pump down properly to collect back the refrigerant and oil before installation new unit. Thickness of copper pipes used with R410A must be more than 0.6mm. Never use copper pipes thinner than 0.6mm. It is desirable that the amount of residual oil is less than 40 mg/10m. 3
19. 20. 21. WARNING During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.). During pump down operation, stop the compressor before remove the refrigeration piping. (Removal of refrigeration piping while compressor is operating and valves are opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.). After completion of installation or service, confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire. 22. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant contacts with fire. 23. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury 24. Must not use other parts except original parts describe in catalog and manual. 25. Using of refrigerant other than the specified type may cause product damage, burst and injury etc. CAUTION 1. 2. 3. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause fire. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare may break and cause refrigerant gas leakage. 4. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury. 5. Select an installation location which is easy for maintenance. 6. 7. 8. Pb free solder has a higher melting point than standard solder; typically the melting point is 50 F 70 F (30 C 40 C) higher. Please use a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20 F (370 ± 10 C). Pb free solder will tend to splash when heated too high (about 1100 F / 600 C). Power supply connection to the air conditioner. Connect the power supply cord of the air conditioner to the mains using one of the following methods. Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency. In some countries, permanent connection of this room air conditioner to the power supply is prohibited. i. Power supply connection to the receptacle using a power plug. Use an approved 15/16A (1.0 ~ 1.75HP) or 16A (2.0HP) or 20A (2.5HP), power plug with earth pin for the connection to the socket. ii. Power supply connection to a circuit breaker for the permanent connection. Use an approved 16A (1.0 ~ 2.0HP) or 20A (2.5HP), circuit breaker for the permanent connection. It must be a double pole switch with a minimum 3.0 mm contact gap. Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts. Take care of the liquid refrigerant, it may cause frostbite. 9. Installation or servicing work: It may need two people to carry out the installation or servicing work. 10. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc. 11. Do not sit or step on the unit, you may fall down accidentally. 12. Do not touch the sharp aluminum fins or edges of metal parts. If you are required to handle sharp parts during installation or servicing, please wear hand glove. Sharp parts may cause injury. 4
2. Specification Cooling Model Indoor CS-S9NKV-7 CS-S12NKV-7 Outdoor CU-S9NKV-7 CU-S12NKV-7 Performance Test Condition AHRI AHRI Power Supply Phase, Hz Single, 60 Single, 60 V 220 220 Min. Mid. Max. Min. Mid. Max. kw 0.84 2.64 3.20 0.92 3.52 4.00 Capacity BTU/h 2860 9000 10900 3140 12000 13600 kj/h 3020 9500 11520 3310 12670 14400 Running Current A - 3.5 - - 5.1 - Input Power W 225 710 870 260 1.03k 1.14k W/W 3.73 3.72 3.68 3.54 3.42 3.51 EER BTU/hW 12.71 12.68 12.53 12.08 11.65 11.93 kj/hw 13.42 13.38 13.24 12.73 12.30 12.63 Power Factor % - 92 - - 92 - Indoor Noise (H / L / QLo) db-a 36 / 26 / 23 38 / 28 / 25 Outdoor Noise (H / L / QLo) db-a 46 / - / - 47 / - / - Max Current (A) / Max Input Power (W) 6.2 / 1.11k 7.4 / 1.37k Starting Current (A) 3.5 5.1 Type Hermetic Motor (Rotary) Hermetic Motor (Rotary) Compressor Motor Type Brushless (6 poles) Brushless (6 poles) Output Power W 650 650 Type Cross-Flow Fan Cross-Flow Fan Material ASG20K1 ASG20K1 Motor Type Induction (4 poles) Induction (4 poles) Input Power W 54.5 54.5 Output Power W 16 16 QLo rpm 650 690 Lo rpm 720 760 Speed Me rpm 870 930 Hi rpm 1020 1100 Indoor Fan Outdoor Fan SHi rpm 1130 1130 Type Propeller Fan Propeller Fan Material PP Resin PP Resin Motor Type Induction (6 poles) Induction (6 poles) Input Power W - - Output Power W 20 28 Speed Hi rpm 790 760 Moisture Removal L/h (Pt/h) 1.6 (3.4) 2.0 (4.2) Indoor Airflow Outdoor Airflow Refrigeration Cycle QLo m 3 /min (ft 3 /min) 5.5 (194) 5.9 (208) Lo m 3 /min (ft 3 /min) 6.2 (219) 6.7 (237) Me m 3 /min (ft 3 /min) 7.9 (279) 9.0 (318) Hi m 3 /min (ft 3 /min) 9.6 (340) 10.5 (370) SHi m 3 /min (ft 3 /min) 10.8 (381) 10.8 (381) Hi m 3 /min (ft 3 /min) 22.0 (780) 31.2 (1100) Control Device Capillary Tube Capillary Tube Refrigerant Oil cm 3 FV50S (320) FV50S (320) Refrigerant Type g (oz) R410A, 780 (27.5) R410A, 850 (30.0) 5
Piping Height(I/D / O/D) mm (inch) 290 (11-7/16) 511 (20-1/8) 290 (11-7/16) 542 (21-11/32) Dimension Width (I/D / O/D) mm (inch) 870 (34-9/32) 650 (25-19/32) 870 (34-9/32) 780 (30-23/32) Depth (I/D / O/D) mm (inch) 214 (8-7/16) 230 (9-1/16) 214 (8-7/16) 289 (11-13/32) Weight Net (I/D / O/D) kg (lb) 9 (20) 24 (53) 9 (20) 30 (66) Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) 6.35 (1/4) / 12.70 (1/2) Standard length m (ft) 7.5 (24.6) 7.5 (24.6) Length range (min max) m (ft) 3 (9.8) ~ 15 (49.2) 3 (9.8) ~ 15 (49.2) I/D & O/D Height different m (ft) 5.0 (16.4) 5.0 (16.4) Additional Gas Amount g/m (oz/ft) 15 (0.2) 15 (0.2) Length for Additional Gas m (ft) 7.5 (24.6) 7.5 (24.6) Drain Hose Indoor Heat Exchanger Outdoor Heat Exchanger Air Filter Inner Diameter mm 16.7 16.7 Length mm 650 650 Fin Material Aluminium (Pre coated) Aluminium (Pre coated) Fin Type Slit Fin Slit Fin Row Stage FPI 2 15 21 2 15 21 Size (W H L) mm 610 315 25.4 610 315 25.4 Fin Material Aluminium (Blue coated) Aluminium (Blue coated) Fin Type Slit Fin Louver Fin Row Stage FPI 2 23 17 1 20 19 Size (W H L) mm 25.4 483.0 553.4:573.4 22.0 508.0 708.4 Material Polypropelene Polypropelene Type One-touch One-touch Power Supply Indoor Indoor Power Supply Cord A 10 10 Thermostat - - Protection Device - - Indoor Operation Range Outdoor Operation Range DRY BULB WET BULB DRY BULB WET BULB Maximum 32 23 32 23 Minimum 16 11 16 11 Maximum 43 26 43 26 Minimum 16 11 16 11 1. Cooling capacities are based on indoor temperature of 27 C DRY BULB (80.6 F DRY BULB), 19.0 C WET BULB (66 F WET BULB) and outdoor air temperature of 35 C DRY BULB (95 F DRY BULB), 24 C WET BULB (75.2 F WET BULB) 6
Model Indoor CS-S18NKV-7 CS-S22NKV-7 Outdoor CU-S18NKV-7 CU-S22NKV-7 Performance Test Condition AHRI AHRI Power Supply Phase, Hz Single, 60 Single, 60 V 220 220 Min. Mid. Max. Min. Mid. Max. kw 1.10 5.28 6.00 1.12 6.45 7.10 Capacity BTU/h 3750 18000 20500 3820 22000 24200 kj/h 3960 19010 21600 4030 23220 25560 Running Current A - 6.5 - - 8.4 - Input Power W 290 1.40k 1.68k 320 1.82k 2.00k W/W 3.79 3.77 3.57 3.50 3.54 3.55 EER BTU/hW 12.93 12.86 12.20 11.94 12.09 12.10 kj/hw 13.66 13.58 12.86 12.59 12.76 12.78 Power Factor % - 98 - - 98 - Indoor Noise (H / L / QLo) db-a 45 / 36 / 33 46 / 37 / 34 Outdoor Noise (H / L / QLo) db-a 49 / - / - 49 / - / - Max Current (A) / Max Input Power (W) 9.2 / 1.97k 11.5 / 2.45k Starting Current (A) 6.5 8.4 Type Hermetic Motor (Rotary) Hermetic Motor (Rotary) Compressor Motor Type Brushless (4 poles) Brushless (4 poles) Output Power W 900 900 Type Cross-Flow Fan Cross-Flow Fan Material ASG30K1 ASG30K1 Motor Type Transistor (8-poles) Transistor (8-poles) Cooling Indoor Fan Outdoor Fan Speed Input Power W 94.8 94.8 Output Power W 40 40 QLo rpm 850 920 Lo rpm 930 1000 Me rpm 1120 1200 Hi rpm 1300 1400 SHi rpm 1400 1480 Type Propeller Fan Propeller Fan Material PP Resin PP Resin Motor Type Induction (6-poles) Induction (6-poles) Input Power W - - Output Power W 66 66 Speed Hi rpm 750 750 Indoor Airflow Moisture Removal L/h (Pt/h) 2.9 (6.1) 3.6 (7.6) QLo m 3 /min (ft 3 /min) 11.2 (395) 11.4 (403) Lo m 3 /min (ft 3 /min) 12.4 (438) 12.6 (445) Me m 3 /min (ft 3 /min) 15.2 (537) 15.5 (547) Hi m 3 /min (ft 3 /min) 18.1 (640) 18.5 (655) SHi m 3 /min (ft 3 /min) 19.7 (696) 19.8 (699) Outdoor Airflow Hi m 3 /min (ft 3 /min) 38.5 (1360) 38.5 (1360) Refrigeration Cycle Control Device Capillary Tube Capillary Tube Refrigerant Oil cm 3 FV50S (450) FV50S (450) Refrigerant Type g (oz) R410A, 1.18k (41.7) R410A, 1.42k (50.1) 7
Piping Height(I/D / O/D) mm (inch) 290 (11-7/16) 695 (27-3/8) 290 (11-7/16) 695 (27-3/8) Dimension Width (I/D / O/D) mm (inch) 1070 (42-5/32) 875 (34-15/32) 1070 (42-5/32) 875 (34-15/32) Depth (I/D / O/D) mm (inch) 240 (9-15/32) 320 (12-5/8) 240 (9-15/32) 320 (12-5/8) Weight Net (I/D / O/D) kg (lb) 12 (26) 44 (97) 12 (26) 46 (101) Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2) 6.35 (1/4) / 15.88 (5/8) Standard length m (ft) 7.5 (24.6) 7.5 (24.6) Length range (min max) m (ft) 3 (9.8) ~ 20 (65.6) 3 (9.8) ~ 20 (65.6) I/D & O/D Height different m (ft) 15.0 (49.2) 15.0 (49.2) Additional Gas Amount g/m (oz/ft) 15 (0.2) 20 (0.2) Length for Additional Gas m (ft) 10 (32.8) 10 (32.8) Drain Hose Indoor Heat Exchanger Outdoor Heat Exchanger Air Filter Inner Diameter mm 16.7 16.7 Length mm 650 650 Fin Material Aluminium (Pre Coated) Aluminium (Pre Coated) Fin Type Slit Fin Slit Fin Row Stage FPI 2 15 17 2 15 21 Size (W H L) mm 810 315 25.4 810 315 25.4 Fin Material Aluminium (Blue Coated) Aluminium (Blue Coated) Fin Type Slit Fin Slit Fin Row Stage FPI 2 31 17 2 31 17 Size (W H L) mm 25.4 651.0 861.6:841.6 25.4 651.0 861.6:841.6 Material Polypropelene Polypropelene Type One-touch One-touch Power Supply Indoor Indoor Power Supply Cord A 15 20 Thermostat - - Protection Device - - Indoor Operation Range Outdoor Operation Range Dry Bulb Wet Bulb Dry Bulb Wet Bulb Maximum 32 23 32 23 Minimum 16 11 16 11 Maximum 43 26 43 26 Minimum 16 11 16 11 1. Cooling capacities are based on indoor temperature of 27 C DRY BULB (80.6 F DRY BULB), 19.0 C WET BULB (66 F WET BULB) and outdoor air temperature of 35 C DRY BULB (95 F DRY BULB), 24 C WET BULB (75.2 F WET BULB) 8
POWER TIMER QUIET 3. Location of Controls and Components 3.1 Indoor Unit Aluminium Fin Front panel Air Filters Auto OFF/ON button Use when remote control is misplaced or a malfunction occurs Indicator (Green) Human Activity Sensor Vertical airflow direction louver Do not adjust by hand. Horizontal airflow direction louver Do not adjust by hand. 3.2 Outdoor Unit AUTO COMFORT NANOE-G PO WERFUL nanoe-g GENERATOR Do not touch during operation. POWER TIMER AUTO COMFORT NANOE-G POWERFUL QUIET (Green) (Orange) (Green) (Blue) (Orange) (Green) Sunlight sensor and remote control receiver 3.3 Remote Control 9
4. Dimensions 4.1 Indoor Unit 4.1.1 CS-S9NKV-7 CS-S12NKV-7 10
4.1.2 CS-S18NKV-7 CS-S22NKV-7 11
4.2 Outdoor Unit 4.2.1 CU-S9NKV-7 <Top View> Space necessary for installation 18 (650) 88 474 88 10 cm 79 134 10 cm 261 293 100 cm Anchor Bolt Pitch 261 x 474 <Side View> <Front View> 736 2-way valve at Liquid side (High Pressure) 3-way valve at Gas side (Low Pressure) <Side View> 12 230 15 (18) 70 131 511 Unit: mm 4.2.2 CU-S12NKV-7 542 12
4.2.3 CU-S18NKV-7 CU-S22NKV-7 13
5. Refrigeration Cycle Diagram 5.1 CS-S9NKV-7 CU-S9NKV-7 CS-S12NKV-7 CU-S12NKV-7 14
5.2 CS-S18NKV-7 CU-S18NKV-7 CS-S22NKV-7 CU-S22NKV-7 15
6. Block Diagram 6.1 CS-S9NKV-7 CU-S9NKV-7 SINGLE PHASE POWER SUPPLY RY-PWR C-FM SSR301 CR303 C303 L301 L TEMP. FUSE TEMP. FUSE SC M 1~ FAN MOTOR U FUSE301 N 16
6.2 CS-S12NKV-7 CU-S12NKV-7 SINGLE PHASE POWER SUPPLY L 1 RY-PWR RY-PWR PTC1 PTC REACTOR CR1 RY-FM RY-C (INDOOR UNIT) C-FM SC FAN MOTOR C-FM SSR301 CR303 TEMP. FUSE TEMP. FUSE C303 (OUTDOOR UNIT) FAN MOTOR CT102 C101 SC L301 NOISE FILTER M 1~ FUSE101 M 1~ M 3~ U FUSE301 N 2 3 FUSE102 FUSE103 17
6.3 CS-S18NKV-7 CU-S18NKV-7 CS-S22NKV-7 CU-S22NKV-7 SINGLE PHASE POWER SUPPLY (INDOOR UNIT) (OUTDOOR UNIT) 1 RY-PWR FUSE3 FUSE301 CT400 C-FM C205 NOISE FILTER CR4 CR6 RY-FM RY-C L N TEMP. FUSE M SC TEMP. FUSE 2 3 PTC2 PTC1 RY-PWR PTC FUSE2 FAN MOTOR M 1~ REACTOR SC FUSE1 MS 3~ 18
7. Wiring Connection Diagram 7.1 Indoor Unit 7.1.1 CS-S9NKV-7 CS-S12NKV-7 19
7.1.2 CS-S18NKV-7 CS-S22NKV-7 20
7.2 Outdoor Unit 7.2.1 CU-S9NKV-7 YELLOW (YLW) BLUE (BLU) RED (RED) TRADE MARK COMP. TERMINAL Resistance of Compressor Windings MODEL CU-S9NKV-7 CONNECTION 5RS092XCE21 U-V 1.152Ω U-W 1.152Ω V-W 1.152Ω 21
7.2.2 CU-S12NKV-7 TO INDOOR UNIT YELLOW (YLW) 1 (BLACK) BLK 2 (WHITE) WHT RED 3 (RED) GRN DATA (RED) AC-BLK (BLK) FUSE101 (20A 250V) AC-WHT (WHT) FG1 (GRN) TERMINAL BOARD NOISE FILTER CIRCUIT GRY RAT2 FUSE102 T3.15A L250V REACTOR GRY RAT1 BLUE (BLU) TRADE MARK COMP. TERMINAL COMMUNICATION CIRCUIT RED (RED) 1 CN-TH 2 (WHT) 3 4 CN-TANK 1 (WHT) 3 OUTDOOR AIR TEMP. SENSOR (THERMISTOR) 0 t 0 t SENSOR COMPLETE PIPING TEMP. SENSOR (THERMISTOR) COMP. TEMPERATURE SENSOR (THERMISTOR) 0 t SENSOR COMPLETE GRN FG2 (GRN) PFC CIRCUIT RECTIFICATION CIRCUIT SWITCHING POWER SUPPLY CIRCUIT M 1~ FAN MOTOR BLU RED YLW FM1 (BLU) FM2 (RED) FM3 (YLW) FAN MOTOR CIRCUIT ELECTRONIC CONTROLLER FUSE103 T3.15A L250V P N (RED) U (BLU) V (YLW) W RED BLU YLW MS 3~ COMPRESSOR Resistance of Compressor Windings MODEL CU-S12NKV-7 CONNECTION 5RS092XCD21 U-V 1.152Ω U-W 1.152Ω V-W 1.152Ω 22
7.2.3 CU-S18NKV-7 CU-S22NKV-7 TO INDOOR UNIT YELLOW (YLW) 1 (BLACK) 2 (WHITE) 3 (RED) TERMINAL BOARD REACTOR BLUE (BLU) RED (RED) TRADE MARK RED GRY GRY COMP. TERMINAL BLK WHT GRN COM3 (RED) AC-BLK (BLK) FUSE3 (20A 250V) AC-WHT (WHT) FG1 (GRN) NOISE FILTER CIRCUIT L2-1 FUSE2 T3.15A L250V L2-0 COMMUNICATION CIRCUIT 1 CN-TH1 2 (WHT) 3 4 CN-TANK 1 (WHT) 3 OUTDOOR AIR TEMP. SENSOR (THERMISTOR) 0 t 0 t SENSOR COMPLETE PIPING TEMP. SENSOR (THERMISTOR) COMP. TEMPERATURE SENSOR (THERMISTOR) 0 t SENSOR COMPLETE PFC CIRCUIT RECTIFICATION CIRCUIT SWITCHING POWER SUPPLY CIRCUIT M 1~ FAN MOTOR BLU RED YLW BLU CAPACITOR 1 5 CN-ACFM (WHT) FAN MOTOR CIRCUIT FUSE1 T3.15A L250V P N U V W (RED) (BLU) (YLW) RED BLU YLW MS 3 ~ ELECTRONIC CONTROLLER COMPRESSOR Resistance of Compressor Windings MODEL CU-S18NKV-7 / CU-S22NKV-7 CONNECTION 5RD132XBA21 U-V 1.897Ω U-W 1.907Ω V-W 1.882Ω 23
8. Electronic Circuit Diagram 8.1 Indoor Unit 8.1.1 CS-S9NKV-7 CS-S12NKV-7 24
8.1.2 CS-S18NKV-7 CS-S22NKV-7 25
8.2 Outdoor Unit 8.2.1 CU-S9NKV-7 70 60 Sensor (Thermistor) Characteristics 1 Outdoor Air Sensor 2 Outdoor Heat Exchanger Sensor 70 60 Compressor Temp. Sensor (Thermistor) Characteristics 50 50 Resistance (kω) 40 30 20 2 1 Resistance (kω) 40 30 20 10 10 0-10 0 10 20 30 40 50 0 20 40 60 80 100 120 140 Temperature ( o C) Temperature ( o C) 26
8.2.2 CU-S12NKV-7 TO INDOOR UNIT REACTOR 1 (BLACK) 2 (WHITE) 3 (RED) TERMINAL BOARD GRY GRY RED RAT2 RAT1 5V BLK WHT DATA (RED) AC-BLK (BLK) FUSE101 (20A 250V) AC-WHT (WHT) NOISE FILTER CIRCUIT FUSE102 T3.15A L250V C6 G2 COMMUNICATION CIRCUIT R11 C7 G2 G2 5V R12 1 2 3 4 CN-TH (WHT) OUTDOOR TEMP. SENSOR PIPING TEMP. SENSOR1 M 1~ FAN MOTOR GRN GRN BLU RED YLW FG1 (GRN) FG2 (GRN) FM1 (BLU) FM2 (RED) FM3 (YLW) FAN MOTOR CIRCUIT PFC CIRCUIT RECTIFICATION CIRCUIT FUSE103 T3.15A L250V SWITCHING POWER SUPPLY CIRCUIT P N U V W G2 R1 1 3 CN-TANK (WHT) (RED) (BLU) (YLW) TANK TEMP. SENSOR RED BLU YLW MS 3~ COMPRESSOR 70 60 Sensor (Thermistor) Characteristics 1 Outdoor Air Sensor 2 Outdoor Heat Exchanger Sensor 70 60 Compressor Temp. Sensor (Thermistor) Characteristics 50 50 Resistance (kω) 40 30 20 2 1 Resistance (kω) 40 30 20 10 10 0-10 0 10 20 30 40 50 0 20 40 60 80 100 120 140 Temperature ( o C) Temperature ( o C) 27
8.2.3 CU-S18NKV-7 CU-S22NKV-7 TO INDOOR UNIT REACTOR 1 (BLACK) 2 (WHITE) 3 (RED) TERMINAL BOARD GRY GRY RED L2-1 L2-0 5V R101 R100 BLK M 1~ FAN MOTOR WHT GRN BLU RED YLW BLU CAPACITOR COM3 (RED) AC-BLK (BLK) FUSE3 (20A 250V) AC-WHT (WHT) FG1 (GRN) 1 5 CN-ACFM (WHT) FAN MOTOR CIRCUIT NOISE FILTER CIRCUIT FUSE2 T3.15A L250V PFC CIRCUIT RECTIFICATION CIRCUIT COMMUNICATION CIRCUIT FUSE1 T3.15A L250V C46 SWITCHING POWER SUPPLY CIRCUIT C49 P N C45 R410 5V 1 2 3 4 CN-TH1 (WHT) 1 3 CN-TANK (WHT) (RED) RED U (BLU) BLU V (YLW) YLW W OUTDOOR TEMP. SENSOR PIPING TEMP. SENSOR1 TANK TEMP. SENSOR MS 3 ~ COMPRESSOR 70 60 Sensor (Thermistor) Characteristics 1 Outdoor Air Sensor 2 Outdoor Heat Exchanger Sensor 70 60 Compressor Temp. Sensor (Thermistor) Characteristics 50 50 Resistance (kω) 40 30 20 2 1 Resistance (kω) 40 30 20 10 10 0-10 0 10 20 30 40 50 0 20 40 60 80 100 120 140 Temperature ( o C) Temperature ( o C) 28
9. Printed Circuit Board 9.1 Indoor Unit 9.1.1 Main Printed Circuit Board 9.1.1.1 CS-S9NKV-7 CS-S12NKV-7 AC304 G301 AC303 RY-PWR CN-PCFM SW01 CN-FB CN-CNT CN-RMT CN-STM2 CN-STM1 CN-DISP CN-MSENS CN-TH CN-CLN 29
9.1.1.2 CS-S18NKV-7 CS-S22NKV-7 AC304 AC303 G301 RY-PWR SW01 CN-FM CN-CNT CN-RMT CN-STM2 CN-STM1 CN-DISP CN-MSENS CN-TH CN-CLN 30
9.1.2 Indicator Printed Circuit Board CN-DISP 9.1.3 High Voltage Power Supply Printed Circuit Board GND 9.1.4 Comparator Printed Circuit Board CN-SENS1 CN-SENS2 CN-MSENS 31
9.1.5 Human Activity Sensor Printed Circuit Board 32
9.2 Outdoor Unit 9.2.1 Main Printed Circuit Board 9.2.1.1 CU-S9NK 33
9.2.1.2 CU-S12NK 34
9.2.1.3 CU-S18NK CU-S22NK 35
9.2.2 Noise Filter Printed Circuit Board 9.2.2.1 CU-S9NKV-7 36
10. Installation Instruction 10.1.3 Indoor/Outdoor Unit Installation Diagram 10.1 Select The Best Location 10.1.1 Indoor Unit Do not install the unit in excessive oil fume area such as kitchen, workshop and etc. There should not be any heat source or steam near the unit. There should not be any obstacles blocking the air circulation. A place where air circulation in the room is good. A place where drainage can be easily done. A place where noise prevention is taken into consideration. Do not install the unit near the door way. Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles. Recommended installation height for indoor unit shall be at least 2.5 m. 10.1.2 Outdoor Unit If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed. There should not be any animal or plant which could be affected by hot air discharged. Keep the spaces indicated by arrows from wall, ceiling, fence or other obstacles. Do not place any obstacles which may cause a short circuit of the discharged air. If piping length is over the [piping length for additional gas], additional refrigerant should be added as shown in the table. Example: For S9*** If the unit is installed at 10 m distance, the quantity of additional refrigerant should be 38 g. (10-7.5) m x 15 g/m =38 g. 37
10.2 Indoor Unit 10.2.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent if from the vibration. Model Dimension 1 2 3 4 5 6 S9***, S12*** 490 mm 82 mm 439 mm 432 mm 43 mm 95 mm S18***, S22*** 590 mm 82 mm 539 mm 532 mm 169 mm 219 mm The centre of installation plate should be at more than 1 at right and left of the wall. The distance from installation plate edge to ceiling should more than 2. From installation plate center to unit s left side is 3. From installation plate center to unit s right side is 4. B : For left side piping, piping connection for liquid should be about 5 from this line. : For left side piping, piping connection for gas should be about 6 from this line. 1 Mount the installation plate on the wall with 5 screws or more (at least 5 screws). (If mounting the unit on the concrete wall, consider using anchor bolts.) o Always mount the installation plate horizontally by aligning the marking-off line with the thread and using a level gauge. 2 Drill the piping plate hole with ø70 mm hole-core drill. o Putting measuring tape at position as shown in the diagram above. The hole center is obtained by measuring the distance namely 128 mm for left and right hole respectively. Another method is intersection point of arrow mark extension. The meeting point of the extension arrow mark is the hole center position. o Drill the piping hole at either the right or the left and the hole should be slightly slanting to the outdoor side.(refer to step 10.2.2) 10.2.2 To Drill a Hole in the Wall and Install a Sleeve of Piping 1 Insert the piping sleeve to the hole. 2 Fix the bushing to the sleeve. 3 Cut the sleeve until it extrudes about 15 mm from the wall. CAUTION When the wall is hollow, please be sure to use the sleeve for tube assembly to prevent dangers caused by mice biting the connection cable. 4 Finish by sealing the sleeve with putty or caulking compound at the final stage. 38
10.2.3 Indoor Unit Installation 10.2.3.1 For the right rear piping 10.2.3.2 For the right and right bottom piping 10.2.3.3 For the embedded piping (This can be used for left rear piping and bottom piping also.) 39
10.2.4 Connect the Cable to the Indoor Unit The power supply cord, indoor and outdoor unit connection cable can be connected without removing the front grille. 1 Install the indoor unit on the installing holder that mounted on the wall. 2 Open the front panel and grille door by loosening the screw. 3 Cable connection to the power supply through Isolating Devices (Disconnecting means). o Connect the approved type PVC sheathed or polychloroprene sheathed power supply cord 3 x 1.5 mm 2 (746-1119W (1.0 ~ 1.5HP) or 3 x 2.5 mm 2 (1492-1865W (2.0 ~ 2.5HP)), type designation 60245 IEC 57 or heavier cord to the terminal board, and connect the other end of the cable to Isolating Devices (Disconnecting means). o Do not use joint power supply cord. Replace the wire if the existing wire (from concealed wiring, or o otherwise) is too short. In unavoidable case, joining of power supply cord between isolating devices and terminal board of air conditioner shall be done by using approved socket and plug with earth pin rated 15/16A (746-1119W (1.0 ~ 1.5HP)) or 16A (1492W (2.0HP)) or 20A (1865W (2.5HP)). Wiring work to both socket and plug must follow to national wiring standard. 4 Bind all the power supply cord lead wire with tape and route the power supply cord via the left escapement. 5 Connection cable between indoor unit and outdoor unit shall be approved type PVC sheathed or polychloroprene sheathed 4 x 1.5 mm 2 (746-1119W (1.0 ~ 1.5HP)) or 4 x 2.5 mm 2 (1492-1865W (2.0 ~ 2.5HP)) flexible cord, type designation 60245 IEC 57 or heavier cord. Do not use joint connection cable. Replace the wire if the existing wire (from concealed wiring, or otherwise) is too short. 6 Bind all the indoor and outdoor connection cable with tape and route the connection cable via the right escapement. 40
7 Remove the tapes and connect the power supply cord and connection cable between indoor unit and outdoor unit according to the diagram below. 8 Secure the power supply cord and connection cable onto the control board with the holder. 9 Close grille door by tighten with screw and close the front panel. Note: Isolating Devices (Disconnecting means) should have minimum 3.0 mm contact gap. Ensure the colour of wires of outdoor unit and the terminal Nos. are the same to the indoor s respectively. Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires as shown in the figure for the electrical safety in case of the slipping out of the cord from the anchorage. 10.2.4.1 Wire Stripping, Connecting Requirement 41
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10.3 Outdoor Unit 10.3.1 Install the Outdoor Unit After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. 1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). 2 When installing at roof, please consider strong wind and earthquake. 3 Please fasten the installation stand firmly with bolt or nails. A B C D Model A B C D S9*** 474 mm 87 mm 18.5 mm 261 mm S12*** 570 mm 105 mm 18.5 mm 320 mm S18***, S22*** 613 mm 131 mm 16 mm 360.5 mm 10.3.2 Connect the piping 10.3.2.1 Connecting the piping to Indoor Please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the copper pipe. (In case of using long piping) Connect the piping Align the center of piping and sufficiently tighten the flare nut with fingers. Further tighten the flare nut with torque wrench in specified torque as stated in the table. Do not overtighten, overtightening may cause gas leakage Piping size Torque 6.35 mm (1/4 ) [18 N m (1.8 kgf.m)] 9.52 mm (3/8 ) [42 N m (4.3 kgf.m)] 12.7 mm (1/2 ) [55 N m (5.6 kgf.m)] 15.88 mm (5/8 ) [65 N m (6.6 kgf.m)] 19.05 mm (3/4 ) [100 N m (10.2 kgf.m)] 10.3.2.2 Connecting the piping to Outdoor Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valve and then tighten with torque wrench to the specified torque as stated in the table. Spanner or Wrench Torque wrench 43
AIR PURGING METHOD IS PROHIBITED FOR R410A SYSTEM 10.3.3 Evacuation of the Equipment 1 Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve. o Be sure to connect the end of the charging hose with the push pin to the service port. 2 Connect the center hose of the charging set to a vacuum pump. 3 Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmhg (0 MPa) to -76 cmhg (-0.1 MPa). Then evacuate the air approximately ten minutes. 4 Close the Low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes. Note: BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERENT GAS LEAKAGE. 5 Disconnect the charging hose from the vacuum pump and from the service port of the 3-way valve. 6 Tighten the service port caps of the 3-way valve at a torque of 18 N m with a torque wrench. 7 Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to OPEN using a hexagonal wrench (4 mm). 8 Mount valve caps onto the 2-way valve and the 3-way valve. o Be sure to check for gas leakage. 44
10.3.4 Connect the cable to the Outdoor Unit 1 Remove the control board cover from the unit by loosening the screw. 2 Connection cable between indoor unit and outdoor unit shall be approved type PVC sheathed or polychloroprene sheathed 4 x 1.5 mm 2 (746-1119W (1.0 ~ 1.5HP)) or 4 x 2.5 mm 2 (1492-1865W (2.0 ~ 2.5HP)) flexible cord, type designation 60245 IEC 57 or heavier cord. Do not use joint connection cable. Replace the wire if the existing wire (from concealed wiring, or otherwise) is too short. 3 Secure the cable onto the control board with the holder (clamper). 4 Attach the control board cover back to the original position with screw. 5 For wire stripping and connection requirement, refer to instruction of indoor unit. Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason. 10.3.5 Piping Insulation 1 Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping. 2 If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 6 mm or above. 10.3.5.1 Cutting and flaring the piping 1 Please cut using pipe cutter and then remove the burrs. 2 Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. 3 Please make flare after inserting the flare nut onto the copper pipes. 45
11. Operation Control 11.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operation mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operation mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting. The compressor at outdoor unit is operating following the frequency instructed by the microcomputer at indoor unit that judging the condition according to internal setting temperature and intake air temperature. 11.1.1 Internal Setting Temperature Once the operation starts, remote control setting temperature will be taken as base value for temperature shifting processes. These shifting processes are depending on the air conditioner settings and the operation environment. The final shifted value will be used as internal setting temperature and it is updated continuously whenever the electrical power is supplied to the unit. Remote Control Setting Temperature 16 C ~ 30 C Indoor Air Temperature Shifting Outdoor Air Temperature Shifting Powerful Mode Shifting Setting Temperature Limit Checking (Min: 16 C; Max: 33 C) Internal Setting Temperature 11.1.2 Cooling Operation 11.1.2.1 Thermostat control Compressor is OFF when intake Air Temperature - Internal Setting Temperature < -0.5 C. Compressor is ON after waiting for 3 minutes, if the Intake Temperature - Internal Setting Temperature > Compressor OFF point. 11.1.3 Soft Dry Operation 11.1.3.1 Thermostat control Compressor is OFF when Intake Temperature - Internal Setting Temperature < -1.0 C. Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF point. 11.1.3.2 Automatic Operation This mode can be set using remote control and the operation is decided by indoor intake air temperature. During operation mode judgment at the beginning of the Auto Mode operation, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature. Power indicator blinks during operation mode judgment. The operation mode is decided based on below chart. 23 C Cooling operation Soft Dry operation Indoor intake Air Temp After the operation mode is decided, the unit operation will follow the respective operation mode control. 46
11.2 Indoor Fan Motor Operation 11.2.1 Basic Rotation Speed Manual Fan Speed o Fan motor s number of rotation is determined according to remote control setting. Remote control Tab Hi Me+ Me Me- Lo Auto Fan Speed o According to room temperature and setting temperature, indoor fan speed is determined automatically. o The indoor fan will operate according to pattern below. Fan Speed a b c d e f g h a b Higher Medium Lower [1 pattern : 10s] Feedback control o Immediately after the fan motor is started, feedback control is performed once every second. o During fan motor on, if fan motor feedback 2550 rpm or <50 rpm continuously for 10 seconds, the fan motor error counter increased; fan motor is then stopped and restarted. If the fan motor error counter increased to 7, then H19 fan motor error is detected. Operation stopped and could not be restarted. 11.3 Outdoor Fan Motor Operation (For S9/12/18NK) Outdoor fan motor is operated with one fan speed only. Outdoor fan turns on when compressor starts to operate. But outdoor fan will turns off 30 seconds after compressor stops to operate. ON ON Compressor OFF ON Fan Speed ON Outdoor Fan 30 sec OFF 11.4 Outdoor Fan Motor Operation (For S22NK) There is 2 speeds for outdoor fan motor. Outdoor fan speed can be changed to Hi or SHi according to outdoor temperature. By default, the outdoor fan speed is set to Hi. For Cooling or Soft Dry operation, when outdoor temperature reaches 38 C the outdoor fan speed is set to SHi, when outdoor temperature reduced to 37 C the fan speed will set to Hi again. Outdoor fan will turns off 30 seconds after compressor stops to operate. ON ON Compressor OFF ON Fan Speed ON Outdoor Fan 30 sec OFF 47
11.5 Airflow Direction There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes). Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control). 11.5.1 Vertical Airflow CS-S9, 12NK Operation Mode Cooling Soft Dry CS-S18, 22NK Operation Mode Cooling Soft Dry Airflow Direction Vane Angle ( ) 1 2 3 4 5 Auto 10 ~ 40 Manual 10 17.5 25 32.5 40 Auto 10 ~ 40 Manual 10 17.5 25 32.5 40 Airflow Direction Vane Angle ( ) 1 2 3 4 5 Auto 5 ~ 35 Manual 5 12.5 20 27.5 35 Auto 5 ~ 35 Manual 5 12.5 20 27.5 35 Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated above. It does not swing during fan motor stop. When the air conditioner is stopped using remote control, the vane will shift to close position. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated above and the positions of the vane are as figure below. When the air conditioner is stopped using remote control, the vane will shift to close position. Side View Side View 1 1 2 135 2 140 3 3 4 5 Close position 4 5 Close position CS-S9, 12NK CS-S18, 22NK 11.5.2 Horizontal Airflow Automatic airflow direction can be set using remote control; the vane swings left and right within the angles as stated below. It does not swing during fan motor stop. Operation Mode Vane Angle ( ) Cooling and soft dry 60 ~120 Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated below and the positions of the vane are as figure below: Top View 2 5 3 4 1 48
CS-S9, 12NK Pattern 1 2 3 4 5 Airflow Direction Patterns at Remote Control Vane Angle ( ) 90 65 77.5 102.5 115 CS-S18, 22NK Pattern 1 2 3 4 5 Airflow Direction Patterns at Remote Control Vane Angle ( ) 90 70 80 100 110 11.6 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode) Purpose o To provide quiet cooling operation compare to normal operation. Control condition o Quiet operation start condition When Quiet button at remote control is pressed Quiet INDICATOR illuminates. o Quiet operation stop condition When one of the following conditions is satisfied, quiet operation stops: ECONAVI button is pressed. Powerful / Quiet button is pressed. Mild Dry Cooling button is pressed. Stop by OFF/ON button. OFF Timer activates. Powerful / Quiet button is pressed again. When quiet operation is stopped, operation is shifted to normal operation with previous setting. When fan speed is changed, quiet operation is shifted to quiet operation of the new fan speed. When operation mode is changed, quiet operation is shifted to quiet operation of the new mode. During quiet operation, if ON timer activates, quiet operation maintains. After off, when on back, quiet operation is not memorized. Control content o Fan speed is changed from normal setting to quiet setting of respective fan speed. This is to reduce sound of Hi, Me, Lo for 3dB (more than 3dB for some models). o Fan speed for quiet operation is -1 step from setting fan speed. 11.7 Powerful Mode Operation When the powerful mode is selected, the internal setting temperature will shift lower up to 2 C (for Cooling/Soft Dry) than remote control setting temperature for 240 minutes and the fan speed will increase to achieve the setting temperature quickly. Powerful operation stops condition o When one of the following condition is satisfied, powerful operation stops: ECONAVI button is pressed. Powerful / Quiet button is pressed. Mild Dry Cooling button is pressed. Stop by OFF/ON button. OFF Timer activates. Powerful / Quiet button is pressed again. Powerful operation continue for 15 minutes. 49
11.8 Timer Control There are 2 sets of ON and OFF timer is available to turn the unit ON or OFF at different preset time. If more than one timer had been set, the upcoming timer will be display and will activated in sequence. 11.8.1 ON Timer Control ON Timer 1 and ON Timer 2 can be set using remote control, where the unit with timer set will start operation earlier than the setting time. This is to provide a comfortable environment when reaching the set ON time. 60 minutes before the set ON time, indoor (at fan speed of Lo-) and outdoor fan motor start operation for 30 seconds to determine the indoor intake air temperature and outdoor air temperature in order to judge the operation starting time. From the above judgment, the decided operation will start operation earlier than the set time as shown below. Indoor intake air temperature ( C) 30 25 5 min 10 min 15 min 30 35 Outdoor air temperature ( C) Cooling / Soft Dry 11.8.2 OFF Timer Control OFF Timer 1 and OFF Timer 2 can be set using remote control, where the unit with timer set will stop at set OFF time. Notes: 1 By pressing ON/OFF operation button, the ON Timer or OFF Timer setting will not be cancelled. 2 To cancel the previous timer setting, press CANCEL button. 3 To activate the previous timer setting, press SET button. 4 If main power supply is switched off, the Timer setting will be cancelled. 11.9 Random Auto Restart Control When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within three to four minutes. There are 10 patterns to be selected randomly after power supply resumes. This control is not applicable during OFF/ON Timer setting. This control can be omitted by open the circuit of JP1 at indoor unit printed circuit board. 11.10 Indication Panel LED POWER TIMER QUIET POWERFUL Color Green Orange Green Orange Light ON Operation ON Timer Setting ON Quiet Mode ON Powerful Mode ON Light OFF Operation OFF Timer Setting OFF Quiet Mode OFF Powerful Mode OFF Note: If POWER LED blinks, the possible operation of the unit is operation mode judgment, or ON timer sampling. If TIMER LED blinks, there is an abnormal operation occurs. 50
11.11 nanoe-g Operation This operation provides clean air by producing great amount of negative ions and distribute through the discharge airflow to capture or deactivate molds, bacteria or viruses. nanoe-g operation start condition o During unit running at any operation mode, if nanoe-g operation is activated, combination operation (operation mode + nanoe-g operation) starts. o During unit is OFF, if nanoe-g operation is activated, nanoe-g individual operation starts. nanoe-g operation stop condition o When OFF/ON button is pressed to stop the operation. o When nanoe-g button is pressed. o When OFF Timer activates. nanoe-g operation pause condition o When indoor fan stop (during deice, odor cut control, thermostat off, etc.). nanoe-g operation resume after indoor fan restarts. o When indoor intake temperature 40 C. nanoe-g operation resume after indoor intake temperature 40 C continuously for 30 minutes. Indoor fan control o During any operation mode combines with nanoe-g operation, fan speed follows respective operation mode. However, nanoe-g system enabled when fan speed 500rpm to ensure proper negative ion distribution, nanoe-g system disabled when fan speed < 500 rpm. o During nanoe-g individual operation, only Auto Fan Speed and no Powerful operation is allowed. Even if Fan Speed button is pressed, no signal is sent to the unit and no change on remote control display. Auto Fan Speed for nanoe-g operation changes from SHi to Hi after 4 hours of operation. Airflow direction control o During any operation mode combines with nanoe-g operation, airflow direction follows respective operation mode. o During nanoe-g individual operation, only Auto Air Swing is allowed. Even if Air Swing button is pressed, no signal is sent to the unit and no change on remote control display. Timer control o When ON Timer activates when unit stops, previous operation resumes and restored last saved nanoe-g operation status. o When ON Timer activates during any operation, no change on current operation. o When OFF Timer activates during any operation, all operation stops and the latest nanoe-g operation status is saved. Indicator o When nanoe-g starts, nanoe-g indicator ON. Remote control receiving sound o Normal operation nanoe-g operation : Beep o Nanoe-G operation Normal operation : Beep o Stop nanoe-g individual operation : Beep o Nanoe-G individual operation Stop : Long Beep Power failure o During nanoe-g individual operation, if power failure occurs, after power resumes, nanoe-g individual operation resumes immediately. o During combination operation, if power failure occurs, after power resumes, combination operation resume immediately. 51
nanoe-g check mode o To enable nanoe-g check mode, during nanoe-g operation ON: Remote control normal mode SET Press continously for 15s SET Transmit ECO demo code and after 2 seconds return to normal mode. SET Transmit check code and after 2 seconds return to normal mode. SET Transmit sunlight sensor check code and after 2 seconds return to normal mode. o If there is abnormal discharge, nanoe-g indicator blinks immediately. Error detection control When nanoe-g indicator blinks, it indicates error listed below: o Nanoe-G connector at main PCB open Judgment method During nanoe-g operation, nanoe-g connector at main PCB is opened. Troubleshooting method Connect the connector or stop operation to cancel the blinking. o Abnormal discharge error Judgment method During nanoe-g operation, the nanoe-g system has abnormal discharge due to short-circuit caused by water or dust adhesion and so forth, with Lo-feedback voltage (at microcontroller). When abnormal discharge occurred, every 30 minutes the unit supplies power to the nanoe-g system. When abnormal discharge occurs for 24 times continuously, nanoe-g indicator blinks. Troubleshooting method Press nanoe-g button or OFF/ON button to stop the operation and check the nanoe-g connector at PCB. After that, press nanoe-g button again to confirm the nanoe-g indicator do not blinks. The 24 timer counter will be clear after 10 minutes of normal operation or when operation stops. Error reset method Press OFF/ON button to OFF the operation. Press AUTO OFF/ON button at indoor unit to OFF the operation. OFF Timer activates. Power supply reset. 52
o nanoe-g breakdown error Judgment method Hi-feedback voltage (at microcontroller) supplied to the nanoe-g system when nanoe-g operation is OFF; nanoe-g breakdown error show immediately. It is due to indoor PCB or nanoe-g high voltage power supply damage. Operations except nanoe-g continue. Both Timer indicator and nanoe-g indicator blink. Troubleshooting method Press nanoe-g button or OFF/ON button to stop the operation. Change nanoe-g high voltage power supply or main PCB. When Lo-feedback voltage supplied to nanoe-g system during nanoe-g operation ON, nanoe-g indicator and Timer indicator stop blinking. 11.12 Mild Dry Cooling Operation This operation helps to prevent decreases in room humidity while maintaining the setting temperature. During unit running at Cooling operation mode, if Mild Dry Cooling button is pressed, Mild Dry Cooling operation starts and Mild Dry Cooling indicators turns ON at remote control display. Mild dry cooling operation is unavailable when the unit is operating Auto mode, Soft Dry mode operation. Mild dry cooling operation is cancelled when the unit turned OFF, pressed again Mild Dry Cooling button or when the operation mode changed from Cooling to other mode. ECONAVI, Powerful, Quiet and Mild Dry Cooling mode cannot function at the same time, the unit will follows the operation according to the last signal received. During this operation, the compressor frequency changes according to operating condition to prevent room humidity decreases and when AUTO AIR SWING is set, the vertical airflow direction fixed at lower limit position. 53
11.13 AUTO COMFORT and ECO NAVI Operation Area of human availability, activity level and absent is judged based on pulses by using 2 infrared sensors. The internal setting temperature shift, fan speed and horizontal airflow direction are adjusted in order to provide comfort environment while maintain the energy saving level. AUTO COMFORT start condition: When AUTO COMF button is pressed. AUTO COMFORT stop conditions: When AUTO COMF button is pressed again. When unit is OFF by OFF/ON button. When unit is OFF when OFF TIMER activates. When unit is OFF by AUTO OFF/ON button at indoor unit. When POWERFUL, QUIET or MILD DRY operation activates. When button is pressed. ECO NAVI start condition: When ECO NAVI button is pressed. ECO NAVI stop conditions: When ECO NAVI button is pressed again. When unit is OFF by OFF/ON button. When unit is OFF when OFF TIMER activates. When unit is OFF by AUTO OFF/ON button at indoor unit. When POWERFUL, QUIET or MILD DRY operation activates. When button is pressed. AUTO COMFORT / ECO NAVI initialization Initialize indication Human Activity Indicator 1 0 2 seconds 2 2 3 seconds 3 3 70 seconds * Indicator ON, Indicator OFF I II III IV Repeat Step I to IV 11.13.1 Human Activity Sensor Area of human availability, activity level and absent is judged based on pulses by using 2 infrared sensors. The internal setting temperature shift, fan speed and horizontal airflow direction are adjusted in order to provide comfort environment while maintain the energy saving level. AUTO COMFORT / ECO NAVI initialization Initialize indication Human Activity Indicator 1 0 2 seconds 2 2 3 seconds I II 3 3 70 seconds III IV Repeat Step I to IV * Indicator ON, Indicator OFF 54
Human activity judgment is as following Signal Detection Information Log Area of Living Classification Judgment HumanPositionAnalysis Target Area & Position Judgment Human Activity Level Judgment Setting Position Judgment 11.13.1.1 Signal Detection 7m A B C 2m 120º 7m Human Activity sensor will turns on according to infrared sensors signal detection. Signal detection Sensor 1 Sensor 2 Possible detected human Human Activity Indicator position area Left Center Right 1 0 C 0 1 A 1 1 B A & C B & C A & C A, B & C 0 0 - * Indicator ON, Indicator OFF However, once the Human Activity Indicator is ON, it will maintain ON status for 5 seconds. If there is no signal detection from either infrared sensor, the final display condition will be kept until absence status. 11.13.1.2 Information Log The signal from Infrared sensors will be log to human activity database for further analysis. 55
11.13.1.3 Area of Living Classification Judgment The system is able to judge area of living according to human activity database, classified as following: Living Area In front of television, dining table, etc. Walkway Human detection is relatively less. Non-Living Area near windows, wall, etc. 11.13.1.4 Human Position Analysis According to Area of Living, frequency of activity and indoor unit intake temperature, the system will analyze the human position away from the indoor unit. 11.13.1.5 Target Area and Position Judgment The system will judge the indoor unit installation position according to human activity Non-Living Area: Non-Living Area at Position A Indoor unit installed at left side of the room. Non-Living Area at Position C Indoor unit installed at right side of the room. Other than above Indoor unit installed at center of the room. Every 4 hours, the Target Area and Position Judgment will restart. 11.13.1.6 Human Activity Level Judgment Human Activity Level is judged based on the frequency of pulses detected by the infrared sensors within a timeframe. The activity level will be categorized into High, Normal, Low level. When a pulse is detected within this timeframe, the status of human presence is judged. When there is no signal detection continues for 20 minutes or more, the status of human absence is judged. 11.13.1.7 Setting Position Judgment According to installation position when there is only one activity area detected, the horizontal airflow direction louver position is fixed according to chart below: Target area Horizontal airflow direction louver position Left installation Center installation Right installation A 3 2 2 B 1 1 1 C 5 5 4 Louver position refer to horizontal airflow direction control. When 2 activity areas have been detected, according to Human Activity Level, the timing of horizontal airflow direction louver steps at the targeted activity areas is judged. Operation Mode Activity level difference Louver stop time Higher Activity level 60 seconds 1 level Lower Activity level 30 seconds Cooling Higher Activity level 60 seconds 2 levels Lower Activity level 8 seconds When 3 activity areas have been detected, according to Human Activity Level the timing of horizontal airflow louver steps at the targeted activity areas is judged. Operation Mode Activity level Louver stop time Hi 45 seconds Cooling Me 30 seconds Lo 20 seconds When 3 activity areas have same activity level, the horizontal airflow direction louver will swing left and right. 56
11.13.1.8 Setting Temperature and Fan Speed Shift Cooling Dual Sensor ECONAVI To optimize energy saving AUTO COMFORT To maximize comfort AUTO COMFORT Heat Source & Movement Low High Normal None COOL/DRY Mode Set Temperature Set Fan Speed +1 C +1 tap* -1 C +1 tap +2 C Medium Fan * For first 15 minutes or until set temperature is reached. 57
11.13.1.9 ECO NAVI and AUTO COMF Demo Mode To enable ECO DEMO mode: Remote control normal mode SET Press continously for 15s SET Transmit ECO demo code and after 2 seconds return to normal mode. SET Transmit check code and after 2 seconds return to normal mode. SET Transmit sunlight sensor check code and after 2 seconds return to normal mode. To disable ECO Demo MODE: Transmit ECO Demo signal again. Operation details Infrared Sensor Human Activity Indicator Sensor 1 Sensor 2 Left Center Right Vane Position Fan Speed 1 0 5 HI 1 1 Auto Swing HI 0 1 1 HI 0 0 Auto Swing LO The target area will maintain for 5 seconds before changeover to next detection. If no activity detection, the last action will maintain for 30 seconds before changeover to human absence status. 58
11.13.1.10 Infrared Sensor Abnormality Abnormality detection: Connector disconnection / Wire cut abnormality o Sensor judge Hi level continuously for 25 seconds Circuit abnormality o 70 seconds after power ON, if infrared sensor judge Lo level continuously for 25 seconds Error Code judgment When abnormality happened, internal counter increase by 1 time. Infrared sensor power OFF, retry after 5 seconds. When the infrared sensor maintains normal condition for 120 seconds, the counter reset or AC reset. When abnormality counter reached 4 times, H59 occurred No TIMER indicator blinking. When error code happened, the unit is able to operate without AUTO COMF / ECO NAVI. 11.13.1.11 Infrared Sensor Check Mode To enable Infrared sensor abnormality check mode: Remote control normal mode SET Press continously for 15s SET Transmit ECO demo code and after 2 seconds return to normal mode. SET Transmit check code and after 2 seconds return to normal mode. SET Transmit sunlight sensor check code and after 2 seconds return to normal mode. During ECO NAVI is ON, when CHECK signal received, if either sensors has abnormality, the 4 times abnormality counter is ignored, ECO NAVI Indicator will blink immediately and error code is memorized. The unit could operate without ECO NAVI or AUTO COMF. The ECO NAVI indicator blinking could be cancelled by pressing ECO NAVI button again. If the Infrared sensor has no abnormality, the CHECK process will end and continue with normal operation. 59
11.13.2 Sunlight Sensor During ECONAVI operation, the sunlight sensor detects sunlight intensity coming through windows and differentiates between sunny and cloudy or night to further optimize energy saving by adjusting the temperature. Sunlight judgment is as following Sunlight intensity reset Judge sunlight intensity Judge ambient condition Temperature shift 11.13.2.1 Sunlight Intensity Reset The sunlight intensity will to reset to zero (no sunlight condition) when o Each time ECONAVI is activated. o Setting temperature is changed. o Operation mode is changed. 60
11.13.2.2 Judge Sunlight Intensity Based on sunlight sensor output voltage, the sunlight intensity value will be computed and logged to sunlight intensity database. The sunlight sensor sensitivity could be adjusted: Remote control normal mode SET Press & release within 10s Default: (Battery insert) Set to Level. 3 Other than default Display last set data 1 Sensitivity Level 1: Less sensitive to sunlight intensity Sensitivity Level 3: Default sensitive level Sensitivity Level 5: More sensitive to sunlight intensity Set to Level. 4 Set to Level. 5 Press Timer SET Transmit solar radiation level & after *2 secs go back to normal mode Set to Level. 1 Set to Level. 2 11.13.2.3 Judge Ambient Condition According to sunlight intensity over a period of time, the system will analyze the ambient condition is sunny, cloudy or night. 11.13.2.4 Temperature Shift 61
11.13.2.5 Sunlight Sensor Check Mode To enable sunlight sensor check mode, during unit is OFF (power standby): Remote control normal mode SET Press continously for 15s SET Transmit ECO demo code and after 2 seconds return to normal mode. SET Transmit check code and after 2 seconds return to normal mode. SET Transmit sunlight sensor check code and after 2 seconds return to normal mode. Operation details o The sunlight sensor check mode will be operated for 5 minutes. o During check mode, the ON and OFF timer will be memorized but it operation be ignored. o During check mode, if the sunlight sensor check code is retransmitted, the 5 minutes counter will be reset. o During check mode, if sunlight sensor detected the sunlight intensity value above minimum level, the ECONAVI indicator turns ON. Else if sunlight sensor detected sunlight intensity value below minimum level, the ECONAVI indicator is OFF. To disable sunlight sensor check mode o After check mode is ended (5 minutes counter elapsed), press AUTO OFF/ON button at indoor unit. o If the sunlight sensor detected sunlight intensity is at abnormal range, the check mode will be ended. Please check for error code. 11.13.2.6 Sunlight Sensor Abnormality Abnormality detection: o When ECONAVI is ON, if the sunlight intensity value below minimum level continuously for 24 hours, the sunlight sensor disconnection error counter will increase by 1 time. If the ECONAVI is OFF, the 24 hours timer will be reset, but the sunlight sensor disconnection error counter will not be reset. Error Code judgment o When sunlight sensor disconnection error counter reached 15 times. H70 occurred. o No TIMER indicator or ECONAVI indicator blink. When error code happened, the unit is able to operate without sunlight sensor. 62
12. Protection Control 12.1 Restart Control (Time Delay Safety Control) The compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period. This control is not applicable if the power supply is cut off and on again. This phenomenon is to balance the pressure inside the refrigerant cycle. 12.2 30 Seconds Forced Operation Once the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation although the intake air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON button at the remote control is permitted or the Auto OFF/ON button at indoor unit. The reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a full cycle and return back to the outdoor unit. 12.3 Total Running Current Control When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor operation will be decreased. If the running current does not exceed X value for 5 seconds, the frequency instructed will be increased. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes. Model S9*** S12*** S18*** S22*** Operation Mode X (A) Y (A) X (A) Y (A) X (A) Y (A) X (A) Y (A) Cooling / Soft Dry (A) 5.5 15.0 6.8 15.0 9.3 14.8 12.0 19.0 Cooling / Soft Dry (B) 5.0 15.0 6.3 15.0 8.8 14.8 11.5 19.0 The first 30 minutes of cooling operation, (A) will be applied. 38.5 C (B) (A) 37.5 C Outdoor air temperature 12.4 IPM (Power Transistor) Prevention Control DC Peak Current Control o When electric current to IPM exceeds set value of 13.2A (S9NK), 13.1A (S12NK), 17.1A (S18NK), 27.7A (S22NK) within 30 seconds, the compressor will stop operation. Then, operation will restart after 1 minute. o For second occurrence onwards, if the set value exceeds again within 30 seconds, the compressor will stop operation. Then, operation will restart after 2 minutes. o If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer LED will be blinking ( F99 is indicated). Overheating prevention o When the IPM temperature raises to 120 C the compressor will stop immediately. o Compressor operation restarts after 3 minutes the temperature decreases to 115 C. o If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking ( F96 is indicated). 63
12.5 Compressor Overheating Prevention Control (For S18, S22NK only) Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below. If compressor discharge temperature exceeds 112 C, compressor will be stopped, occurs 4 times per 20 minutes, timer LED will be blinking. F97 is indicated. 112 C 110 C 100 C Compressor=OFF Compressor Frequency Reduced Compressor Frequency Maintain 97 C 96 C Comp Discharge temperature Free 90 C 12.6 Low Pressure Prevention Control (Gas Leakage Detection) Control start conditions o For 5 minutes, the compressor continuously operates and outdoor total current is between 0.65A and 1.65A. o During Cooling and Soft Dry operation: Indoor suction temperature indoor piping temperature is below 4 C Control contents o Compressor stops (and restart after 3 minutes). o If the conditions above happened 2 times within 20 minutes, the unit will: Stop operation Timer LED blinks and F91 indicated. 12.7 Compressor Tank Temperature Rise Protection Control Control start conditions o For 5 minutes, the compressor continuously operates and outdoor total current is between 0.65A and 1.65A. o During Cooling and Soft Dry operation: Indoor suction temperature -indoor piping temperature is below 4 C. Indoor temperature and outdoor temperature is 30±5 C. Remote Control setting 16 C and Hi Fan Speed. Control contents o Compressor stops (and restart after 3 minutes) o If the conditions above happened 2 times within 20 minutes, the unit will: Stop operation Timer LED blinks and F91 indicated. 12.8 Low Frequency Protection Control 1 When the compressor operates at frequency lower than 24Hz continued for 20 minutes, the operation frequency will be changed to 23Hz for 2 minutes. 12.9 Low Frequency Protection Control 2 When all below conditions comply, the compressor frequency will changed to lower frequency. Temperature, T, for: Cooling / Soft Dry Indoor intake air ( C) T < 15 or T 30 Outdoor air ( C) T < 16 or T 38 Indoor heat exchanger ( C) T < 30 64
12.10 Outdoor Air Temperature Control The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. This control will begin 1 minute after the compressor starts. Compressor frequency will adjust based on outdoor air temperature. 38 C Free Limited Frequency 37 C Outdoor air temperature 12.11 Cooling Overload Control Pipe temperature limitation / restriction. o Detects the outdoor pipe temperature and carry out restriction / limitation below (Limit the compressor operation frequency) o The compressor stops if outdoor pipe temperature exceeds 61 C (S9NK), 63 C (S12, 18, 22NK). o If the compressor stops 4 times in 20 minutes, Timer LED blinks ( F95 indicated: Outdoor high pressure rise protection) 12.12 Freeze Prevention Control 1 When indoor hear exchanger temperature is lower than 0 C continuously for 6 minutes, compressor will stops operation. Compressor will resume its operation 3 minutes after the indoor heat exchanger is higher than 5 C. At the same time, indoor fan speed will be higher than during its normal operation. If indoor heat exchanger is higher than 5 C for 5 minutes, the fan speed will return to its normal operation. 12.13 Freeze Prevention Control 2 Control start conditions o During Cooling operation and soft dry operation During thermo OFF condition, indoor intake temperature is less than 10 C or Compressor stops for freeze prevention control o Either one of the conditions above occurs 5 times in 60 minutes. Control contents o Operation stops o Timer LED blinks and H99 indicated 12.14 Dew Prevention Control To prevent dew formation at indoor unit discharge area. This control will be activated if: o Outdoor air temperature and indoor pipe temperature judgment by microcontroller is fulfilled. o When COOL or DRY mode is operated more than 20 minutes or more. This control stopped if o Compressor stopped. o Remote Control setting changed (fan speed/ temperature). o Outdoor air temperature and indoor intake temperature changed. Fan speed will be adjusted accordingly in this control. 65
12.15 Odor Cut Control To reduce the odor released from the unit. o Start Condition AUTO FAN Speed is selected during COOL or DRY operation. During freeze prevention control and timer preliminary operation, this control is not applicable. o Control content Depends on compressor conditions: 1. Compressor OFF Compressor ON. The indoor unit fan stops temporarily and then starts to blow at minimum airflow for 30 seconds. 2. Compressor ON Compressor OFF. The indoor unit fan stops for 90 seconds and then blows at minimum airflow for 20 seconds. 66
13. Servicing Mode 13.1 Auto Off/On Button Auto OFF/ON Button Pressed 5 sec Auto Operation Test Run Operation (Forced Cooling Operation) Beep Auto OFF/ON Button Pressed Stop 1 AUTO OPERATION MODE The Auto Operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction. 2 TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE) The Test Run Operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5 seconds. A beep sound will be heard at the fifth seconds, in order to identify the starting of this operation. The Auto OFF/ON button may be used together with remote control to set / change the advance setting of air conditioner operation. 3 REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Number Switch Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 11 seconds (3 beep sounds will occur at 11 th seconds to identify the Remote Control Number Switch Mode is in standby condition), press AC Reset button and then press any button at remote control to transmit and store the desired transmission code to the EEPROM. There are 4 types of remote control transmission code could be selected. The indoor unit will only operate when received signal with same transmission code from remote control. This could prevent signal interference when there are 2 or more units installed nearby together. To change remote control transmission code, short or open jumpers at the remote control printed circuit board. Remote Control Printed Circuit Board Jumper A (J1) Jumper B (D2) Remote Control No. Short Open A (Default) Open Open B Short Short C Open Short D 4 REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiving Sound OFF/ON Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 16 seconds (4 beep sounds will occur at 16 th seconds to identify the Remote Control Receiving Sound OFF/ON Mode is in standby condition) and press AC Reset button at remote control. Press Auto OFF/ON button to toggle remote control receiving sound. - Short beep : Turn OFF remote control receiving sound. - Long beep : Turn ON remote control receiving sound. J1 D2 After Auto OFF/ON button is pressed, the 20 seconds counter for Remote Control Receiving Sound OFF/ON Mode is restarted. 67
13.2 Remote Control Button 13.2.1 SET Button To check remote control transmission code and store the transmission code to EEPROM o Press Set button continuously for 10 seconds by using pointer o Press Timer Set button unit a beep sound is heard as confirmation of transmission code change. o Confirm setting by pressing Timer Set button, a beep sound will be heard. LCD returns to original display after 2 seconds. o LCD returns to original display if remote control does not operate for 30 seconds. 13.2.2 RESET (RC) To clear and restore the remote control setting to factory default. o Press once to clear the memory 13.2.3 RESET (AC) To restore the unit s setting to factory default. o Press once to restore the unit s setting 13.2.4 TIMER To change indoor unit indicators intensity: o Press continuously for 5 seconds. 13.2.5 TIMER To change remote control display from Degree Celsius ( C) to Degree Fahrenheit ( F) o Press continuously for 10 seconds. 68
14. Troubleshooting Guide 14.1 Refrigeration Cycle System In order to diagnose malfunctions, ensure the air conditioner is free from electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan. The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table to the right. Normal Pressure and Outlet Air Temperature (Standard) Gas Pressure Outlet air Mpa Temperature (kg/cm 2 G) ( C) Cooling Mode 0.9 ~ 1.2 (9 ~ 12) 12 ~ 16 Condition: Indoor fan speed = High Outdoor temperature = 35 C at cooling mode. Compressor operate at rated frequency Different in the intake and outlet air temperatures More than 8 C (15 minutes after an operation is started) at cooling mode. Normal Measuring the air temperature different Less than 8 C at the cooling mode Value of electric current during operation Higher than specified Dusty condenser preventing heat radiation Measuring electric current during operation Excessive amount of refrigerant Lower than specified Gas side pressure Cooling Mode High Inefficient compressor Measuring gas side pressure Low Insufficient refrigerant Low Clogged strainer or capillary cube 69
14.1.1 Relationship between the condition of the air conditioner and pressure and electric current Condition of the Cooling Mode air conditioner Low Pressure High Pressure Electric current during operation Insufficient refrigerant (gas leakage) Clogged capillary tube or strainer Short circuit in the indoor unit Heat radiation deficiency of the outdoor unit Inefficient compression Carry out the measurement of pressure, electric current, and temperature fifteen minutes after an operation is started. 70
14.2 Breakdown Self Diagnosis Function 14.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code) Once error occurred during operation, the unit will stop its operation, and Timer LED blinks. Although Timer LED goes off when power supply is turned off, if the unit is operated under a breakdown condition, the LED will ON again. In operation after breakdown repair, the Timer LED will not blink. The last error code (abnormality) will be stored in IC memory. 14.2.2 To Make a Diagnosis 1 Timer LED starts to blink and the unit automatically stops the operation. 2 Press the CHECK button on the remote control continuously for 5 seconds. 3 - - will be displayed on the remote control display. Note: Display only for - - (No signal transmission, no receiving sound and no Power LED blinking) 4 Press the TIMER or button on the remote control. The code H00 (no abnormality) will be displayed and signal will be transmit to the main unit. 5 Each press of the button ( or ) will increase error code number and transmit error code signal to the main unit. 6 When the latest abnormality code on the main unit and code transmitted from the remote control are matched, Power LED will light up for 30 seconds and a beep sound (continuously for 4 seconds) will be heard. If no codes are matched, Power LED will light up for 0.5 seconds and no sound will be heard. 7 The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating the unit for 30 seconds. 8 The LED will be off if the unit is turned off or the RESET button on the main unit is pressed. 14.2.3 To Display Memorized Error Code (Protective Operation) 1 Turn power on. 2 Press the CHECK button on the remote control 3 - - will be displayed on the remote control display. Note: Display only for - - (No signal transmission, no receiving sound and no Power LED blinking) 4 Press the TIMER or button on the remote control. The code H00 (no abnormality) will be displayed and signal will be transmit to the main unit. 5 Each press of the button ( or ) will increase error code number and transmit error code signal to the main unit. 6 When the latest abnormality code on the main unit and code transmitted from the remote control are matched, Power LED will light up for 30 seconds and a beep sound (continuously for 4 seconds) will be heard. If no codes are matched, Power LED will light up for 0.5 seconds and no sound will be heard. 7 The breakdown diagnosis mode will be canceled unless pressing the CHECK button continuously for 5 seconds or operating the unit for 30 seconds. 8 The same diagnosis can be repeated by turning power on again. 14.2.4 To Clear Memorized Error Code after Repair (Protective Operation) 1 Turn power on (in standby condition). 2 Press the AUTO button for 5 seconds (a beep sound is heard) on the main unit to operate the unit at Forced Cooling Operation Mode. 3 Press the CHECK button on the remote control for about 1 second with a pointed object to transmit signal to main unit. A beep sound is heard, and the Error Code is cleared. 14.2.5 Temporary Operation (Depending On Breakdown Status) 1 Press the Auto OFF/ON button on the main unit (a beep sound is heard) to operate the unit. (Remote control is enable again). 2 The unit can be temporarily be used until repaired. Error Code Operation Temporary items H23 Cooling Emergency Operation H27, H28 Cooling with limited power 71
14.3 Error Code Table Diagnosis display Abnormality / Protection control Abnormality Judgment Emergency Operation H00 No abnormality detected - Normal operation Primary location to verify H11 Indoor / Outdoor abnormal > 1 min after starting Indoor fan operation Internal / external cable connection communication operation only Indoor / outdoor PCB H12 Connection capability rank abnormality Continuously for 90 sec after power supplied - - H14 Indoor intake air temperature sensor Intake air temperature sensor Continue for 5 sec. - abnormality (defective or disconnected) H15 Outdoor compressor temperature sensor Compressor temperature sensor Continue for 5 sec. - abnormality (defective or disconnected) H16 Outdoor current transformer open circuit - - Outdoor PCB IPM (Power transistor) module H19 Indoor fan motor mechanism locked 7 occurrences Indoor PCB - continuously Fan motor H23 Indoor heat exchanger temperature Heat exchanger temperature sensor Continue for 5 sec. sensor abnormality (defective or disconnected) H25 e-ion abnormality - Indoor PCB e-ion PCB H27 Outdoor air temperature sensor Outdoor temperature sensor Continue for 5 sec. abnormality (defective or disconnected) H28 Outdoor heat exchanger Outdoor heat exchanger temperature Continue for 5 sec. temperature sensor (defective or sensor abnormality disconnected) H30 Discharge temperature sensor Outdoor discharge temperature Continue for 5 sec. abnormality sensor (defective or disconnected) H33 Indoor / outdoor wrong connection - - Indoor / outdoor supply voltage H38 Indoor / outdoor mismatch (brand code) - - - H59 Eco Patrol sensor abnormality Continue for 70 sec. H97 Outdoor fan lock abnormality 2 occurrences within 30 minutes H98 Indoor temperature rise abnormality - - H99 Indoor heat exchanger freeze prevention protection F11 4 way valve switching failure * F90 F90 F91 F93 F95 F96 F97 F98 F99 System and compressor microcomputer communication error(for S10*** only) Power factor correction abnormality Refrigerant cycle abnormal Outdoor compressor abnormal revolution Cooling high pressure protection Intelligent power transistor overheating protection Compressor temperature rise protection control Total running current protection Outdoor direct current (DC) peak detection - - 4 occurrences within 30 minutes 2 occurrences within 5 seconds 4 occurrences within 20 minutes 2 occurrences within 20 minutes 4 occurrences within 20 minutes 4 occurrences within 20 minutes - - 4 times occurrence within 20 minutes 3 times occurrence within 20 minutes 7 times occurrence continuously - - Eco Patrol sensor (defective or disconnected) Eco Patrol PCB Outdoor fan motor locked Air filter dirty Air circulation short circuit Insufficient refrigerant Air filter dirty 4-way valve v-coil Compressor Outdoor PCB - Outdoor PCB - No refrigerant ( 3-way valve is closed) - Outdoor compressor - Outdoor refrigerant circuit - - - Excess refrigerant Improper heat radiation IPM (Power transistor) Insufficient refrigerant Compressor Excess refrigerant Improper heat radiation Outdoor PCB IPM (Power transistor) Compressor Note: Frequency measured and fan speed fixed * For cooling only model, it is the indication when indoor heat exchanger sensor or indoor air intake sensor has abnormality. The memory data of error code is erased when the power supply is cut off, or press the Auto Switch until beep sound heard following by pressing the CHECK button at remote control. Although operation forced to stop when abnormality detected, emergency operation is possible for certain errors (refer to Error Code Table) by using remote control or Auto OFF/ON button at indoor unit. However, the remote control signal receiving sound is changed from one beep to four beep sounds. 72
14.4 Troubleshooting Flowchart 14.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused Faulty indoor unit PCB. Faulty outdoor unit PCB. Indoor unit-outdoor unit signal transmission error due to wrong wiring. Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units. Indoor unit-outdoor unit signal transmission error due to disturbed power supply waveform. Troubleshooting 73
14.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused Wrong models interconnected. Wrong indoor unit or outdoor unit PCBs mounted. Indoor unit or outdoor unit PCBs defective. Indoor-outdoor unit signal transmission error due to wrong wiring. Indoor-outdoor unit signal transmission error due to breaking of wire 3 in the connection wires between the indoor and outdoor units. Troubleshooting 74
14.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting 75
14.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting 76
14.4.5 H16 (Outdoor Current Transformer Open Circuit) Malfunction Decision Conditions A current transformer (CT) is detected by checking the compressor running frequency ( rated frequency) and CT detected input current (less than 1.14A) for continuously 20 seconds. Malfunction Caused CT defective Outdoor PCB defective Compressor defective (low compression) Troubleshooting 77
14.4.6 H19 (Indoor Fan Motor DC Motor Mechanism Locked) Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused Operation stops due to short circuit inside the fan motor winding. Operation stops due to breaking of wire inside the fan motor. Operation stops due to breaking of fan motor lead wires. Operation stops due to Hall IC malfunction. Operation error due to faulty indoor unit PCB. Troubleshooting 78
14.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting 79
14.4.8 H25 (e-ion Air Purifying System Abnormal) Malfunction Decision Conditions During standby of cooling and heating operation, e-ion breakdown occurs and air conditioner stops operation. Malfunction Caused Faulty indoor main PCB. Faulty indoor e-ion power module. Troubleshooting 80
14.4.9 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting 81
14.4.10 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting 82
14.4.11 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. Faulty sensor. Faulty PCB. Troubleshooting 83
14.4.12 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused Wrong models interconnected. Wrong indoor unit and outdoor unit PCBs used. Indoor unit or outdoor unit PCB defective. Troubleshooting 84
14.4.13 H97 (Outdoor Fan Motor DC Motor Mechanism Locked) Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused Operation stops due to short circuit inside the fan motor winding. Operation stops due to breaking of wire inside the fan motor. Operation stops due to breaking of fan motor lead wires. Operation stops due to Hall IC malfunction. Operation error due to faulty outdoor unit PCB. Troubleshooting 85
14.4.14 H98 (Indoor High Pressure Protection) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions During heating operation, the temperature detected by the indoor pipe temperature sensor is above 60 C. Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat exchanger Air short circuit Detection error due to faulty indoor pipe temperature sensor Detection error due to faulty indoor unit PCB Troubleshooting 86
14.4.15 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is lower than 2 C) Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat exchanger Air short circuit Detection error due to faulty indoor pipe temperature sensor Detection error due to faulty indoor unit PCB Troubleshooting 87
14.4.16 F11 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions When cooling operation, when indoor pipe temperature or indoor heat exchanger temperature sensor is above 45 C. Malfunction Caused Faulty connector connection. Faulty indoor pipe temperature sensor. Faulty indoor main PCB. Troubleshooting 88
14.4.17 F90 (Power Factor Correction Protection) Malfunction Decision Conditions During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level. Malfunction Caused DC voltage peak due to power supply surge. DC voltage peak due to compressor windings not uniform. Faulty outdoor PCB. Troubleshooting 89
14.4.18 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions During cooling, compressor frequency = Fcmax. During cooling and heating operation, running current: 0.65A < I < 1.65A. During cooling, indoor intake - indoor pipe < 4 C. Malfunction Caused Refrigerant shortage (refrigerant leakage) Poor compression performance of compressor. 2/3 way valve closed. Detection error due to faulty indoor intake air or indoor pipe temperature sensors. Troubleshooting 90
14.4.19 F93 (Compressor Rotation Failure) Malfunction Decision Conditions A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused Compressor terminal disconnect Outdoor PCB malfunction Troubleshooting 91
14.4.20 F95 (Cooling High Pressure Abnormality) Malfunction Decision Conditions During operation of cooling, when outdoor unit heat exchanger high temperature data (61 C) is detected by the outdoor pipe temperature sensor. Malfunction Caused Outdoor pipe temperature rise due to short circuit of hot discharge air flow. Outdoor pipe temperature rise due to defective of outdoor fan motor. Outdoor pipe temperature rise due to defective outdoor pipe temperature sensor. Outdoor pipe temperature rise due to defective outdoor unit PCB. Troubleshooting 92
14.4.21 F96 (IPM Overheating) Malfunction Decision Conditions During operating of cooling and heating, when IPM temperature data (100 C) is detected by the IPM temperature sensor. Malfunction Caused IPM overheats due to short circuit of hot discharge air flow. IPM overheats due to defective of outdoor fan motor. IPM overheats due to defective of internal circuitry of IPM. IPM overheats due to defective IPM temperature sensor. Troubleshooting 93
14.4.22 F97 (Compressor Overheating) Malfunction Decision Conditions During operation of cooling and heating, when compressor tank temperature data (112 C) is detected by the compressor tank temperature sensor. Malfunction Caused Refrigerant shortage (refrigerant leakage). 2/3 way valve closed. Detection error due to faulty compressor tank temperature sensor. Troubleshooting 94
14.4.23 F98 (Input Over Current Detection) Malfunction Decision Conditions During cooling and heating operation, when an input over-current (16.8A) is detected by checking the input current value being detected by current transformer (CT) with the compressor running. Malfunction Caused Over-current due to compressor failure. Over-current due to defective outdoor unit PCB. Over-current due to defective inverter main circuit electrolytic capacitor. Over-current due to excessive refrigerant. Troubleshooting 95
14.4.24 F99 (Output Over Current Detection) Malfunction Decision Conditions During operation of cooling and heating, when an output over-current (18.5A) is detected by checking the current that flows in the inverter DC peak sensing circuitry. Malfunction Caused DC peak due to compressor failure. DC peak due to defective power transistor(s). DC peak due to defective outdoor unit PCB. Troubleshooting Checking the power transistor Never touch any live parts for at least 10 minutes after turning off the circuit breaker. If unavoidable necessary to touch a live part, make sure the power transistor s supply voltage is below 50V using the tester. For the UVW, make measurement at the Faston terminal on the board of the relay connector. Tester s negative terminal Power transistor (+) UVW Power transistor (-) UVW Tester s positive terminal UVW Power transistor (+) UVW Power transistor (-) Normal resistance Abnormal resistance Several kω to several MΩ 0 or 96
15. Disassembly and Assembly Instructions WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 15.1 CS-S9NK CS-S12NK 15.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 15.1.1.1 To remove front grille 3. Hold both sides of the front grille and remove it by pulling up and toward yourself gently. 1. Lift to open the horizontal vane gently. 2. Remove 2 caps and 2 screws at the bottom of discharge vane. Figure 1 15.1.1.2 To remove power electronic controller 2 Hooks (left hand side) 4. Remove the control board cover by releasing the 2 hooks. Figure 2 97
9. Pull out the main electronic controller controller halfway. 8. Remove screw to remove terminal board complete. 10. Detach 6 connectors as labeled from the electronic controller. Then pull out main controller gently AC303 (WHT) RY-PWR CN-FM 7. Detach the HV+ (White) & HV- (Black) terminal wires, CN1 and GND then remove the high voltage generator. 6. Detach the CN-DISP connector then remove the indicator complete. 5. Detach the Earth wire AC304 (RED) CN-STM2 CN-STM1 CN-MSENS CN-TH CN-CLN 11. Detach AC303 (WHT), RY-PWR connector (Black and Brown) from the electronic controller. 12. Detach AC304 (RED) from Terminal Board. Figure 3 Figure 4 15.1.1.3 To remove discharge grille 13. Pull out to remove the drain hose from the discharge grille 14. Then pull the discharge grille downward gently to dismantle it Figure 5 98
15.1.1.4 To remove control board 15. Remove 4 screws holding the control board then pull out the control board. Figure 6 15.1.1.5 To remove cross flow fan and indoor fan motor 16. Remove the screw that holding the cross flow fan and fan motor axis. Figure 7 18. Remove the bearing by pulling it out gently 17. Remove the screw from the evaporator. Figure 8 99
19. Push the holdfast to the left and lift up the evaporator. Evaporator Cross flow fan 20. Remove the cross flow fan from the unit by pulling it to the left and downward. Figure 9 21. Fan motor can be removed after the removal of cross flow fan. Reminder: To reinstall the fan motor, adjust the fan motor connector to 45 towards you before fixing control board. Cross Flow Fan Figure 10 Reminder: To reinstall the cross flow fan, ensure cross flow fan is in line as shown in figure 10. 100
WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 15.2 CS-S18NK CS-S22NK 15.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 15.2.1.1 To remove front grille 3. Hold both sides of the front grille and remove it by pulling up and toward yourself gently. 2. Remove 3 caps and 4 screws at the bottom of discharge vane. 1. Lift to open the horizontal vane and intake grille gently. Figure 11 15.2.1.2 To remove horizontal vane 4. Bend the horizontal vane slightly to remove vane s shaft from body. 5. Release the hooks from 2 fulcrums. Figure 12 6. Release the hook that holds the vertical vanes. 101
15.2.1.3 To remove power electronic controller 2 Hooks (left hand side) 4. Remove the control board cover by releasing the 2 hooks. Figure 13 9. Pull out the main electronic controller controller halfway. 8. Remove screw to remove terminal board complete. 10. Detach 6 connectors as labeled from the electronic controller. Then pull out main controller gently AC303 (WHT) RY-PWR CN-FM 7. Detach the HV+ (White) & HV- (Black) terminal wires, CN1 and GND then remove the high voltage generator. 6. Detach the CN-DISP connector then remove the indicator complete. 5. Detach the Earth wire AC304 (RED) CN-STM2 CN-STM1 CN-MSENS CN-TH CN-CLN 11. Detach AC303 (WHT), RY-PWR connector (Black and Brown) from the electronic controller. 12. Detach AC304 (RED) from Terminal Board. Figure 14 Figure 15 102
15.2.1.4 To remove discharge grille 13. Pull out to remove the drain hose from the discharge grille 15.2.1.5 To remove control board 14. Then pull the discharge grille downward gently to dismantle it Figure 16 15. Remove 4 screws holding the control board then pull out the control board. Figure 17 15.2.1.6 To remove cross flow fan and indoor fan motor Figure 18 16. Remove the screw that holding the cross flow fan and fan motor axis. 103
18. Remove the bearing by pulling it out gently 17. Remove the screw from the evaporator. 19. Push the holdfast to the left and lift up the evaporator. Figure 19 Evaporator 20. Remove the cross flow fan from the unit by pulling it to the left and downward. Figure 20 21. Fan motor can be removed after the removal of cross flow fan. Reminder: To reinstall the fan motor, adjust the fan motor connector to 45 towards you before fixing control board. Cross Flow Fan Figure 21 Reminder: To reinstall the cross flow fan, ensure cross flow fan is in line as shown in figure 21. 104
16. Technical Data 16.1 Operation Characteristics 16.1.1 CS-S9NKV-7 CU-S9NKV-7 Cooling Characteristic o Room temperature: 27 C (DBT), 19 C (WBT) o Operation condition: High fan speed o Piping length: 7.5m o Compressor Frequency : Fc 105
Piping Length Characteristic o Room temperature: 27 C (DBT), 19 C (WBT) o Operation condition: High fan speed o Outdoor temperature: 35 C (DBT), 24 C (WBT) o Piping length: 7.5m Compressor Frequency : Fc 106
16.1.2 CS-S12NKV-7 CU-S12NKV-7 Cooling Characteristic o Room temperature: 27 C (DBT), 19 C (WBT) o Operation condition: High fan speed o Piping length: 7.5m o Compressor Frequency : Fc 107
Piping Length Characteristic o Room temperature: 27 C (DBT), 19 C (WBT) o Operation condition: High fan speed o Outdoor temperature: 35 C (DBT), 24 C (WBT) o Piping length: 7.5m o Compressor Frequency : Fc 108
16.1.3 CS-S18NKV-7 CU-S18NKV-7 Cooling Characteristic o Room temperature: 27 C (DBT), 19 C (WBT) o Operation condition: High fan speed o Piping length: 5m o Compressor Frequency : Fc 109
Piping Length Characteristic o Room temperature: 27 C (DBT), 19 C (WBT) o Operation condition: High fan speed o Outdoor temperature: 35 C (DBT), 24 C (WBT) o Compressor Frequency : Fc 110
16.1.4 CS-S22NKV-7 CU-S22NKV-7 Cooling Characteristic o Room temperature: 27 C (DBT), 19 C (WBT) o Operation condition: High fan speed o Piping length: 5m o Compressor Frequency : Fc 111
Piping Length Characteristic o Room temperature: 27 C (DBT), 19 C (WBT) o Operation condition: High fan speed o Outdoor temperature: 35 C (DBT), 24 C (WBT) o Compressor Frequency : Fc 112
17. Exploded View and Replacement Parts List 17.1 Indoor Unit 17.1.1 CS-S9NKV-7 CS-S12NKV-7 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. 113
REF. NO. PART NAME & DESCRIPTION QTY. CS-S9NKV-7 CS-S12NKV-7 REMARK 1 CHASSIS COMPLETE 1 CWD50C1653 2 FAN MOTOR 1 CWA921443 O 3 CROSS-FLOW FAN COMPLETE 1 CWH02C1076 4 BEARING ASSY 1 CWH64K007 5 SCREW - CROSS-FLOW FAN 1 CWH551146 6 GENERATOR COMPLETE 1 CWH94C0043 7 EVAPORATOR 1 CWB30C4071 CWB30C4058 8 FLARE NUT (LIQUID) 1 CWT251030 9 FLARE NUT (GAS) 1 CWT251031 CWT251032 10 CLIP FOR SENSOR 1 CWH32143 11 CONTROL BOARD CASING 1 CWH102449 12 TERMINAL BOARD COMPLETE 1 CWA28C2405 CWA28C2381 O 13 ELECTRONIC CONTROLLER - MAIN 1 CWA73C6231 CWA73C6232 O 14 ELECTRONIC CONTROLLER - HVU 1 N0GE1F000002 O 15 ELECTRONIC CONTROLLER - INDICATOR 1 CWA746634 O 16 SENSOR COMPLETE 1 CWA50C2401 O 17 SENSOR COMPLETE (ECO) 1 CWA50C2809 O 18 ELECTRONIC CONTROLLER (ECO SENSOR) 1 CWA745791 O 19 ELECTRONIC CONTROLLER (ECO SENSOR) 1 CWA746206 O 20 ELECTRONIC CONTROLLER (COMPARATOR) 1 CWA746653 O 21 LEAD WIRE - PCB ECO 1 CWA67C9785 22 CONTROL BOARD CASING FOR PCB ECO 1 CWD933407 23 CONTROL BOARD TOP COVER 1 CWH131467 24 INDICATOR HOLDER 1 CWD933406 25 CONTROL BOARD FRONT COVER CO. 1 CWH13C1247 26 DISCHARGE GRILLE COMPLETE 1 CWE20C3235 27 BACK COVER CHASSIS 1 CWD933233 28 FULCRUM 1 CWH621131 29 VERTICAL VANE 8 CWE241374 30 CONNECTING BAR 1 CWE261250 31 CONNECTING BAR 1 CWE261256 32 AIR SWING MOTOR 1 CWA98K1016 O 33 AIR SWING MOTOR 1 CWA981264 O 34 CAP - DRAIN TRAY 1 CWH521259 35 HORIZONTAL VANE COMPLETE 1 CWE24C1385 36 REMOTE CONTROL COMPLETE 1 CWA75C3865 O 37 FRONT GRILLE COMPLETE 1 CWE11C5081 O 38 INTAKE GRILLE COMPLETE 1 CWE22C1723 39 GRILLE DOOR COMPLETE 1 CWE14C1090 40 AIR FILTER 2 CWD001279 41 SCREW - FRONT GRILLE 2 XTT4+16CFJ 42 CAP - FRONT GRILLE 2 CWH521227 43 DRAIN HOSE 1 CWH851173 44 INSTALLATION PLATE 1 CWH361097 45 BAG COMPLETE - INSTALLATION SCREW 1 CWH82C1705 46 OPERATING INSTRUCTION 1 CWF568380 47 INSTALLATION INSTRUCTION 1 CWF615116 48 INSTALLATION INSTRUCTION 1 CWF615117 50 BAG 1 CWG861497 114
REF. NO. PART NAME & DESCRIPTION QTY. CS-S9NKV-7 CS-S12NKV-7 REMARK 51 SHOCK ABSORBER (L) 1 CWG713386 52 SHOCK ABSORBER (R) 1 CWG713387 53 C.C.CASE 1 CWG567324 (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). O marked parts are recommended to be kept in stock. 115
17.1.2 CS-S18NKV-7 CS-S22NKV-7 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. 116
REF. NO. PART NAME & DESCRIPTION QTY. CS-S18NKV-7 CS-S22NKV-7 REMARK 1 CHASSIS COMPLETE 1 CWD50C1654 2 FAN MOTOR 1 ARW7628AC ARW7627AC O 3 CROSS-FLOW FAN COMPLETE 1 CWH02C1077 4 BEARING ASSY 1 CWH64K007 5 SCREW - CROSS-FLOW FAN 1 CWH551146 6 GENERATOR COMPLETE 1 CWH94C0043 7 EVAPORATOR 1 CWB30C3198 CWB30C3654 8 FLARE NUT (LIQUID) 1 CWT251030 9 FLARE NUT (GAS) 1 CWT251032 CWT251033 10 CLIP FOR SENSOR 1 CWH32143 11 CONTROL BOARD CASING 1 CWH102449 12 TERMINAL BOARD COMPLETE 1 CWA28C2364 CWA28C2365 O 13 ELECTRONIC CONTROLLER - MAIN 1 CWA73C6233 CWA73C6234 O 14 ELECTRONIC CONTROLLER - HVU 1 N0GE1F000002 O 15 ELECTRONIC CONTROLLER - INDICATOR 1 CWA746634 O 16 SENSOR COMPLETE 1 CWA50C2401 O 17 SENSOR COMPLETE (ECO) 1 CWA50C2826 O 18 ELECTRONIC CONTROLLER (ECO SENSOR) 1 CWA745791 O 19 ELECTRONIC CONTROLLER (ECO SENSOR) 1 CWA746206 O 20 ELECTRONIC CONTROLLER (COMPARATOR) 1 CWA746653 O 21 LEAD WIRE - PCB ECO 1 CWA67C9934 22 CONTROL BOARD CASING FOR PCB ECO 1 CWD933407A 23 CONTROL BOARD TOP COVER 1 CWH131467 24 INDICATOR HOLDER 1 CWD933406 25 CONTROL BOARD FRONT COVER CO. 1 CWH13C1247 26 DISCHARGE GRILLE COMPLETE 1 CWE20C3242 27 BACK COVER CHASSIS 1 CWD933031 28 FULCRUM 2 CWH621138 29 VERTICAL VANE 11 CWE241374 30 CONNECTING BAR (RIGHT) 1 CWE261257 31 CONNECTING BAR (LEFT) 1 CWE261258 32 AIR SWING MOTOR 1 CWA98K1018 O 33 AIR SWING MOTOR 1 CWA981241 O 34 CAP - DRAIN TRAY 1 CWH521259 35 HORIZONTAL VANE COMPLETE 1 CWE24C1392 36 REMOTE CONTROL COMPLETE 1 CWA75C3865 O 37 FRONT GRILLE COMPLETE 1 CWE11C5219 O 38 INTAKE GRILLE COMPLETE 1 CWE22C1728 39 GRILLE DOOR COMPLETE 1 CWE14C1090 40 AIR FILTER 2 CWD001283 41 SCREW - FRONT GRILLE 4 XTT4+16CFJ 42 CAP - FRONT GRILLE 3 CWH521227 43 DRAIN HOSE 1 CWH851173 44 INSTALLATION PLATE 1 CWH361098 45 BAG COMPLETE - INSTALLATION SCREW 1 CWH82C1705 46 OPERATING INSTRUCTION 1 CWF568380 47 INSTALLATION INSTRUCTION 1 CWF615116 48 INSTALLATION INSTRUCTION 1 CWF615117 50 BAG 1 CWG861498 117
REF. NO. PART NAME & DESCRIPTION QTY. CS-S18NKV-7 CS-S22NKV-7 REMARK 51 SHOCK ABSORBER (L) 1 CWG713402 52 SHOCK ABSORBER (R) 1 CWG713403 53 C.C.CASE 1 CWG567415 (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). O marked parts are recommended to be kept in stock. 118
17.2 Outdoor Unit 17.2.1 CU-S9NKV-7 41 40 38 39 20 36 37 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. 119
REF. NO. PART NAME & DESCRIPTION QTY CU-S9NKV-7 REMARK 1 CHASSIS COMPLETE 1 CWD50K2107 2 FAN MOTOR BRACKET 1 CWD541074 3 SCREW - FAN MOTOR BRACKET 2 CWH551217 4 FAN MOTOR 1 CWA951734 O 5 SCREW - FAN MOTOR MOUNT 4 CWH55252J 6 PROPELLER FAN ASSY 1 CWH03K1020 7 NUT - PROPELLER FAN 1 CWH56053J 8 COMPRESSOR 1 5RS092XCE21 O 9 ANTI - VIBRATION BUSHING 3 CWH50077 10 NUT - COMPRESSOR MOUNT 3 CWH56000J 11 CONDENSER 1 CWB32C2789 12 CAPILLARY TUBE ASSY 1 CWB15K1229 13 DISCHARGE MUFFLER 1 CWB121010 14 HOLDER COUPLING 1 CWH351222 15 2-WAYS VALVE (LIQUID) 1 CWB021463 O 16 3-WAY VALVE (GAS) 1 CWB011580 O 17 TERMINAL COVER 1 CWH171039A 18 NUT - TERMINAL COVER 1 CWH7080300J 19 SOUND PROOF BOARD 1 CWH151185 20 SOUND PROOF MATERIAL 1 CWG302478 21 SOUND PROOF MATERIAL 1 CWG302532 22 SENSOR CO - COMP TEMP 1 CWA50C2205 O 23 CONTROL BOARD COVER - TOP 1 CWH131324 24 ELECTRONIC CONTROLLER - MAIN 1 CWA73C6299R 25 ELECTRONIC CONTROLLER - NF 1 CWH14C7640 26 TERMINAL BOARD ASSY 1 CWA28K1036J 27 CABINET SIDE PLATE CO. 1 CWE04C1186 28 SENSOR CO - AIR TEMP AND PIPE TEMP 1 CWA50C2502 O 29 CABINET SIDE PLATE (LEFT) 1 CWE041110A 30 CABINET FRONT PLATE CO. 1 CWE06K1059 31 CABINET TOP PLATE 1 CWE031041A 32 PLATE - C.B.COVER 1 CWH131325 33 CONTROL BOARD COVER CO. 1 CWH13C1186 35 STRAINER 1 CWB11025 36 BAG 1 CWG861216 37 BASE BOARD/CC CASE - COMPLETE 1 CWG62C1046 38 SHOCK ABSORBER 1 CWG712435 39 SHOCK ABSORBER 1 CWG712437 40 C.C.CASE 1 CWG566798 41 WIRE NET 1 CWD041057A (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). O marked parts are recommended to be kept in stock. 120
17.2.2 CU-S12NKV-7 42 41 39 40 37 38 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.. 121
REF. NO. PART NAME & DESCRIPTION QTY CU-S12NKV-7 REMARK 1 CHASSIS COMPLETE 1 CWD50K2071 2 FAN MOTOR BRACKET 1 CWD541030 3 SCREW - FAN MOTOR BRACKET 2 CWH551217 4 FAN MOTOR 1 CWA951466 O 5 SCREW - FAN MOTOR MOUNT 4 CWH55406J 6 PROPELLER FAN ASSY 1 CWH03K1010 7 NUT - PROPELLER FAN 1 CWH56053J 8 COMPRESSOR 1 5RS092XCD21 O 9 ANTI - VIBRATION BUSHING 3 CWH50077 10 NUT - COMPRESSOR MOUNT 3 CWH56000J 11 CONDENSER 1 CWB32C2810 12 CAPILLARY TUBE ASSY 1 CWB15K1279 13 DISCHARGE MUFFLER 1 CWB121010 14 HOLDER COUPLING 1 CWH351023 15 2-WAYS VALVE (LIQUID) 1 CWB021564 O 16 3-WAY VALVE (GAS) 1 CWB011367 O 17 TERMINAL COVER 1 CWH171039A 18 NUT - TERMINAL COVER 1 CWH7080300J 19 SOUND PROOF BOARD 1 CWH151172 21 SOUND PROOF MATERIAL 1 CWG302431 22 SENSOR CO - COMP TEMP 1 CWA50C2205 O 23 CONTROL BOARD COVER - TOP 1 CWH131264 24 ELECTRONIC CONTROLLER - MAIN 1 CWA73C6324R 26 TERMINAL BOARD ASSY 1 CWA28K1036J 27 CABINET SIDE PLATE CO. 1 CWE04C1159 28 SENSOR CO - AIR TEMP AND PIPE TEMP 1 CWA50C2764 O 29 CABINET SIDE PLATE (LEFT) 1 CWE041248A 30 CABINET FRONT PLATE CO. 1 CWE06C1039 31 CABINET TOP PLATE 1 CWE031014A 32 CONTROL BOARD COVER 1 CWH131301 33 CONTROL BOARD COVER - COMPLETE 1 CWH13C1211 34 HANDLE 1 CWE161010 35 STRAINER 1 CWB11025 36 REACTOR 1 G0C103J00029 37 BAG 1 CWG861078 38 BASE BOARD/CC CASE - COMPLETE 1 CWG50C2388 39 SHOCK ABSORBER (LEFT) 1 CWG712210 40 SHOCK ABSORBER (RIGHT) 1 CWG712209 41 C.C.CASE 1 CWG566799 42 WIRE NET 1 CWD041111A (Note) All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). O marked parts are recommended to be kept in stock. 122
17.2.3 CU-S18NKV-7 CU-S22NKV-7 Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts. 123