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Panasonic CS-A9KKD-2 Service Manual
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Panasonic CS-A9KKD-2 Service Manual

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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.
Indoor Unit
CS-A9KKD-2
CS-A12KKD-2
CS-A18KKD-2
CS-A24KKD-2
CS-A28KKD-2
WARNING
© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2010.
Unauthorized copying and distribution is a violation of law.
Order No: PHAAM1003127C3
Outdoor Unit
CU-A9KKD-2
CU-A12KKD-2
CU-A18KKD-2
CU-A24KKD-2
CU-A28KKD-2

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Summary of Contents for Panasonic CS-A9KKD-2

  • Page 1 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. © Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2010. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    Outdoor Unit ..........45 15.1 Refrigeration cycle system ......94 12. Operation Control..........49 16. Disassembly and Assembly Instructions ..96 12.1 Heating Operation ........49 16.1 CS-A9KKD-2 CS-A12KKD-2 ....96 12.2 Cooling Operation........51 16.2 CS-A18KKD-2 CS-A24KKD-2 12.3 Soft Dry Operation........53 CS-A28KKD-2 ......... 100 12.4 Automatic Operation........55...
  • Page 3 18. Exploded View and Replacement Parts List ................125 18.1 Indoor Unit..........125 18.2 Outdoor Unit ..........131...

  • Page 4: Safety Precautions

    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. •...
  • Page 5 WARNING 19. After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire. 20. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire. 21.

  • Page 6: Specification

    2. Specification Indoor CS-A9KKD-2 CS-A12KKD-2 Model Outdoor CU-A9KKD-2 CU-A12KKD-2 Performance Test Condition NEW JIS NEW JIS Phase, Hz Single, 50 Single, 50 Power Supply 2.43 2.43 3.22 3.23 Capacity BTU/h 8300 8300 11000 11030 kJ/h 2090 2090 2770 2780 Running Current Input Power 1.08k...
  • Page 7 Type Propeller Fan Propeller Fan Material PP Resin PP Resin Motor Type Induction (6 poles) Induction (6 poles) Input Power 66.0 - 74.8 71.5 - 80.3 Output Power Speed 800 - 830 830 - 840 Moisture Removal L/h (Pt/h) 1.5 (3.2) 1.8 (3.8) Cooling: 7.2 (253) - 7.2 (253) Cooling: 7.9 (277) - 7.9 (277)
  • Page 8 DRY BULB WET BULB DRY BULB WET BULB Maximum Cooling Indoor Minimum Operation Maximum Range Heating Minimum Maximum Cooling Outdoor Minimum Operation Maximum Range Heating Minimum Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°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) Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb)
  • Page 9 Indoor CS-A18KKD-2 CS-A24KKD-2 Model Outdoor CU-A18KKD-2 CU-A24KKD-2 Performance Test Condition NEW JIS NEW JIS Phase, Hz Single, 50 Single, 50 Power Supply 5.15 5.15 6.43 6.43 Capacity Btu/h 17600 17600 22000 22000 kJ/h 18540 18540 23150 23150 Running Current 12.6 12.6 Input Power 1.80k...
  • Page 10 Type Propeller Fan Propeller Fan Material PP Resin PP Resin Motor Type Induction (6 poles) Induction (6 poles) Input Power 138.0 -150.3 138.0 -150.3 Output Power 460 - 490 460 - 490 Speed 815 - 830 815 - 830 Moisture Removal L/h (Pt/h) 2.8 (5.9) 3.6 (7.6)
  • Page 11 DRY BULB WET BULB DRY BULB WET BULB Maximum Cooling Indoor Minimum Operation Maximum Range Heating Minimum Maximum Cooling Outdoor Minimum Operation Maximum Range Heating Minimum Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°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) Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb)
  • Page 12 Indoor CS-A28KKD-2 Model Outdoor CU-A28KKD-2 Performance Test Condition NEW JIS Phase, Hz Single, 50 Power Supply 7.20 7.20 Capacity BTU/h 24600 24600 kJ/h 25920 25920 Running Current 13.1 12.8 Input Power 2.86k 2.87k 2.52 2.51 BTU/hW 8.60 8.57 Power Factor dB-A 49 / 44 Indoor Noise (H / L)
  • Page 13 Type Propeller Fan Material Motor Type Induction (8 poles) Input Power 147.0 -163.1 Output Power 490 - 520 Speed 855 - 870 Moisture Removal L/h (Pt/h) 4.1 (8.7) Cooling: 16.5 (583) - 16.5 (583) /min (ft /min) Heating: 17.6 (622) – 17.6 (622) Cooling: 18.2 (643) - 18.2 (643) /min (ft /min)
  • Page 14 DRY BULB WET BULB Maximum Cooling Minimum Indoor Operation Range Maximum Heating Minimum Maximum Cooling Minimum Outdoor Operation Range Maximum Heating Minimum Cooling capacities are based on indoor temperature of 27°C Dry Bulb (80.6°F Dry Bulb), 19.0°C Wet Bulb (66.2°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) Heating capacities are based on indoor temperature of 20°C Dry Bulb (68°F Dry Bulb) and outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb)

  • Page 15: Features

    3. Features • E-ion Air Purifying System with Patrol Sensor Active e-ions are released to catch dust particles and bring them back the large positively charged filter. Patrol Sensor color changes to indicate the dirt level in the air • Long Installation Piping CS/CU-A9KK, long piping up to 10 meters.

  • Page 16: Location Of Controls And Components

    4. Location of Controls and Components Indoor Unit Outdoor Unit Remote Control...

  • Page 17: Dimensions

    5. Dimensions Indoor Unit 5.1.1 CS-A9KKD-2 CS-A12KKD-2...
  • Page 18 5.1.2 CS-A18KKD-2 CS-A24KKD-2 CS-A28KKD-2...

  • Page 19: Outdoor Unit

    Outdoor Unit 5.2.1 CU-A9KKD-2 5.2.2 CU-A12KKD-2...
  • Page 20 5.2.3 CU-A18KKD-2 CU-A24KKD-2 CU-A28KKD-2...

  • Page 21: Refrigeration Cycle Diagram

    6. Refrigeration Cycle Diagram CS-A9KKD-2 CU-A9KKD-2 CS-A12KKD-2 CU-A12KKD-2...

  • Page 22: Cs-A18Kkd-2 Cu-A18Kkd-2 Cs-A24Kkd-2 Cu-A24Kkd-2 Cs-A28Kkd-2 Cu-A28Kkd-2

    CS-A18KKD-2 CU-A18KKD-2 CS-A24KKD-2 CU-A24KKD-2 CS-A28KKD-2 CU-A28KKD-2...

  • Page 23: Block Diagram

    7. Block Diagram CS-A9KKD-2 CU-A9KKD-2...

  • Page 24: Cs-A12Kkd-2 Cu-A12Kkd-2

    CS-A12KKD-2 CU-A12KKD-2...

  • Page 25: Cs-A18Kkd-2 Cu-A18Kkd-2 Cs-A24Kkd-2 Cu-A24Kkd-2

    CS-A18KKD-2 CU-A18KKD-2 CS-A24KKD-2 CU-A24KKD-2...

  • Page 26: Cs-A28Kkd-2 Cu-A28Kkd-2

    CS-A28KKD-2 CU-A28KKD-2...

  • Page 27: Wiring Connection Diagram

    8. Wiring Connection Diagram CS-A9KKD-2 CU-A9KKD-2 Resistance of Indoor Fan Motor Windings Resistance of Compressor Windings MODEL CS-A9KKD-2 MODEL CU-A9KKD-2 CONNECTION CWA921409 CONNECTION 2PS156D3DA02 BLUE-YELLOW 457.2Ÿ 4.228Ÿ YELLOW-RED 420.5Ÿ 3.841Ÿ Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

  • Page 28: Cs-A12Kkd-2 Cu-A12Kkd-2

    CS-A12KKD-2 CU-A12KKD-2 Resistance of Indoor Fan Motor Windings Resistance of Compressor Windings MODEL CS-A12KKD-2 MODEL CU-A12KKD-2 CONNECTION CWA921415 CONNECTION 2PS206D2BA02 BLUE-YELLOW 196Ÿ 3.207Ÿ YELLOW-RED 303Ÿ 3.256Ÿ Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature. Resistance of Outdoor Fan Motor Windings MODEL CU-A12KKD-2...

  • Page 29: Cs-A18Kkd-2 Cu-A18Kkd-2 Cs-A24Kkd-2 Cu-A24Kkd-2

    CS-A18KKD-2 CU-A18KKD-2 CS-A24KKD-2 CU-A24KKD-2 Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-A18KKD-2 CU-A24KKD-2 MODEL CU-A18KKD-2 CU-A24KKD-2 CONNECTION CWA951385J CWA951385J CONNECTION 2JS318D3AA04 2JS438D3JA02 BLUE-YELLOW 93Ÿ 93Ÿ 1.618Ÿ 0.830Ÿ YELLOW-ORANGE 124Ÿ 124Ÿ 3.718Ÿ 2.257Ÿ YELLOW-RED 98Ÿ 98Ÿ Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

  • Page 30: Cs-A28Kkd-2 Cu-A28Kkd-2

    CS-A28KKD-2 CU-A28KKD-2 Resistance of Indoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-A28KKD-2 MODEL CU-A28KKD-2 CONNECTION CWA951294J CONNECTION 2JD514E3AA03 BLUE-YELLOW 102Ÿ 1.022Ÿ YELLOW-ORANGE 81Ÿ 2.142Ÿ YELLOW-RED 108Ÿ Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

  • Page 31: Electronic Circuit Diagram

    9. Electronic Circuit Diagram CS-A9KKD-2 CU-A9KKD-2...

  • Page 32: Cs-A12Kkd-2 Cu-A12Kkd-2

    CS-A12KKD-2 CU-A12KKD-2...

  • Page 33: Cs-A18Kkd-2 Cu-A18Kkd-2 Cs-A24Kkd-2 Cu-A24Kkd-2

    CS-A18KKD-2 CU-A18KKD-2 CS-A24KKD-2 CU-A24KKD-2...

  • Page 34: Cs-A28Kkd-2 Cu-A28Kkd-2

    CS-A28KKD-2 CU-A28KKD-2...

  • Page 35: Printed Circuit Board

    10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board 10.1.1.1 CS-A9KKD-2 CS-A12KKD-2 CS-A18KKD-2 CS-A24KKD-2...
  • Page 36 10.1.1.2 CS-A28KKD-2...
  • Page 37 10.1.2 Power Printed Circuit Board 10.1.2.1 CS-A9KKD-2 CS-A12KKD-2 10.1.2.2 CS-A18KKD-2 CS-A24KKD-2 CS-A28KKD-2...
  • Page 38 10.1.3 Indicator Printed Circuit Board 10.1.4 Receiver Printed Circuit Board 10.1.5 High Voltage Power Supply Printed Circuit 10.1.6 Comparator Printed Circuit Board...
  • Page 39 10.1.7 Eco Patrol Printed Circuit Board...

  • Page 40: Installation Instruction

    11.1.3 Indoor/Outdoor Unit Installation 11. Installation Instruction Diagram 11.1 Select the Best Location 11.1.1 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.

  • Page 41: Indoor Unit

    11.2 Indoor Unit 11.2.1 How to Fix Installation Plate The mounting wall is strong and solid enough to prevent if from the vibration. The centre of installation plate should be at more than c at right and left of the wall. The distance from installation plate edge to ceiling should more than d.
  • Page 42 11.2.3 Indoor Unit Installation Caution Use shock absorber during pull out the piping to protect the intake grille Do not turn over the unit without it ’s shock from damage. absorber during pull out the piping. It may cause intake grille damage Piping Piping Shock absorber...
  • Page 43 11.2.4 Connect the Cable to the Indoor Unit The inside and outside connecting cable can be connected without removing the front grille. a) INDOOR POWER SUPPLY MODEL (1.0 ~ 2.5HP) Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 5 x 1.5mm (1.0~1.5HP) or 5 x 2.5mm (2.0~2.5HP)
  • Page 44 b) OUTDOOR POWER SUPPLY MODEL (3.0HP) Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 6 x 1.5mm (3.0HP) flexible cord, type designation 245 IEC 57 or heavier cord. • Secure the connecting cable onto the control board with the holder.

  • Page 45: Outdoor Unit

    11.3 Outdoor Unit 11.3.1 Install the Outdoor Unit • After selecting the best location, start installation according to Indoor/Outdoor Unit Installation Diagram. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10mm). When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
  • Page 46 11.3.3 Evacuation of the Equipment 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. Be sure to connect the end of the charging hose with the push pin to the service port. Connect the center hose of the charging set to a vacuum pump.
  • Page 47 11.3.4 Connect the cable to the Outdoor Unit a) INDOOR POWER SUPPLY MODEL (1.0~2.5HP) Remove the control board cover from the unit by loosening the screw. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 5 x 1.5mm (1.0~1.5HP) or 5 x 2.5mm (2.0~2.5HP) flexible cord, type designation 245 IEC 57 or...
  • Page 48 11.3.5 Pipe Insulation 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. 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 6mm or above.

  • Page 49: Operation Control

    The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 16°C to 30°C. • During heating operation, the compressor will stop running and restart as shown in below figure. (A9/12KK) (A18/24/28KK) 12.1.1 Heating Operation Time Diagram (For CS-A9KKD-2 CU-A9KKD-2 and CS-A12KKD-2 CU-A12KKD-2)
  • Page 50 12.1.2 Heating Operation Time Diagram (For CS-A18KKD-2 CU-A18KKD-2, CS-A24KKD-2 CU-A24KKD-2 and CS-A28KKD-2 CU-A28KKD-2)

  • Page 51: Cooling Operation

    The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 16°C to 30°C. • During cooling operation, the compressor will stop and restart as shown in figure below: 12.2.1 Cooling Operation Time Diagram (For CS-A9KKD-2 CU-A9KKD-2 and CS-A12KKD-2 CU-A12KKD-2)
  • Page 52 12.2.2 Cooling Operation Time Diagram (For CS-A18KKD-2 CU-A18KKD-2, CS-A24KKD-2 CU-A24KKD-2 and CS-A28KKD-2 CU-A28KKD-2)

  • Page 53: Soft Dry Operation

    However after 3 minutes of compressor off, during Soft Dry “OFF” (within 6 minutes Soft Dry restart control), the indoor unit will start to operate at normal Cooling mode if the intake temperature is higher than Cooling “ON” point. 12.3.1 Soft Dry Operation Time Diagram (For CS-A9KKD-2 CU-A9KKD-2 and CS-A12KKD-2 CU-A12KKD-2)
  • Page 54 12.3.2 Soft Dry Operation Time Diagram (For CS-A18KKD-2 CU-A18KKD-2 and CS-A24KKD-2 CU-A24KKD-2)

  • Page 55: Automatic Operation

    12.3.3 Soft Dry Operation Time Diagram (For CS-A28KKD-2 CU-A28KKD-2) 12.4 Automatic Operation • Automatic operation can be set using remote control. • This operation starts to operate with indoor fan at SLo speed for 25 seconds to judge the intake air temperature. •...
  • Page 56 • Operation mode will be determine again for judgement after 1 hour of operation, if the room temperature reaches to set temperature and compressor off time is over 7 minutes 30 seconds continuously. * The present operation mode will be continued, if the room temperature does not reach to set temperature (Compressor keeps running) eventhough after 1 hour from automatic operation mode started.

  • Page 57: Indoor Fan Speed Control

    12.5 Indoor Fan Speed Control • Indoor fan speed can be set using remote control. 12.5.1 Fan Speed Rotation Chart Fan Speed (rpm) CS-A9KKD-2 CS-A12KKD-2 1080 1120 1040 1100 SSLo QSHi 1010 1050 1030 QHLo Speed CS-A18KKD-2 CS-A24KKD-2 CS-A28KKD-2 Cool, Dry...
  • Page 58 When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the table. Fan speed rotates in the range of Hi, Me and Lo-. Deodorizing Control will be activated. For CS-A9KKD-2 and CS-A12KKD-2 Speed Mode SSLo Stop...
  • Page 59 For CS-A18KKD-2, CS-A24KKD-2 and CS-A28KKD-2 Speed Mode SSLo Stop Manual Normal Auto Manual Powerful Auto Manual Auto Manual Normal Auto Manual Powerful Auto Auto Mode Judgment -100 Manual -100 Quiet -100 Auto -100 -100 Manual Quiet Auto -100 Manual -100 Quiet -100 Auto...
  • Page 60 This is to obtain the actual reading of the intake air temperature. For the resume of compressor operation, indoor fan will operate at Me fan speed to provide comfort and lesser noise environment, after 70 seconds from the restarts of compressor. For CS-A9KKD-2, CS-A12KKD-2, CS-A18KKD-2 and CS-A24KKD-2 For CS-A28KKD-2...
  • Page 61 • Auto Fan Speed during Soft Dry operation. Indoor fan will rotate alternately between off and Lo-. At the beginning of each compressor starts operation, indoor fan will increase fan speed gradually for deodorizing purpose. When compressor turned off for 6 minutes, indoor fan will start at Lo- to circulate the air in the room. This is to obtain the actual reading of intake air temperature.

  • Page 62: Outdoor Fan Speed Control

    • During Cooling operation or Soft Dry operation, indoor fan motor may stop to rotate at certain periods. At that condition, the louver will stop swinging. For CS-A9KKD-2 and CS-A12KKD-2 Horizontal Upper limit for cooling mode and soft dry mode/11°...
  • Page 63 • When the piping air temperature reaches 38°C, the louver is changed from upper to lower limit. When the piping air temperature falls 35°C, the louver is changed from lower to upper limit. For CS-A9KKD-2 and CS-A12KKD-2 Horizontal Upper limit/11°...
  • Page 64 (Cooling and Soft Dry Operation Condition) For CS-A9KKD-2 and CS-A12KKD-2 Horizontal Upper limit for cooling mode and 11° Closing soft dry mode position 16° / 135° 21° 27° Lower limit for cooling mode 33° and soft dry mode For CS-A18KKD-2 and CS-A24KKD-2 Horizontal Upper limit / 0°...

  • Page 65: Horizontal Airflow Direction Control

    Lower limit for heating mode 12.8 Horizontal Airflow Direction Control For CS-A9KKD-2 and CS-A12KKD-2, the horizontal airflow direction louver can be adjusted manually by hand. For CS-A18KKD-2, CS-A24KKD-2 and CS-A28KKD-2, the horizontal airflow direction louver are as following. 12.8.1 Auto Control •...

  • Page 66: Powerful Operation

    12.9 Powerful Operation • To achieve the setting temperature quickly. (Cooling and Soft Dry Operation condition) • When Powerful operation is set, the setting temperature will be automatically decreased 3°C internally against the present setting temperature (Lower temperature limit: 16°C). •...

  • Page 67: Quiet Operation

    12.10 Quiet Operation (For Cooling Operation or cooling region of Soft Dry Operation) • To provide quiet cooling operation condition. • Once the Quiet Operation is set at the remote control, the Quiet LED illuminated. The sound level will reduce around 2dB(A) for Lo fan speed or 3dB(A) for Hi/Me fan speed against the present operation sound level.
  • Page 68 • Auto Fan Speed (For A9KKD-2, A12KKD-2, A18KKD-2 and A24KKD-2) (For A28KKD-2) • Quiet operation stops when: Quiet button is pressed again. Stopped by OFF/ON operation button. Timer OFF activates. Operation mode button is changed. (Heating Operation condition) • When the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around 2 dB (Lo) or 3 dB (Hi, Me), against the present sound level operation.

  • Page 69: Timer Control

    12.11 Timer Control 12.11.1 ON Timer • When the ON Timer is set by using the remote control, the unit will start to operate slightly before the set time, so that the room will reach nearly to the set temperature by the set time. •...

  • Page 70: Patrol Operation

    12.14 Patrol Operation • To monitor air dirtiness level by using Patrol sensor and to maintain air freshness by activates e-ion operation • Patrol operation starts condition When the unit operation is started with “OFF/ON” button When the unit stops, “Patrol” operation is selected, Patrol individual operation will start. During cooling only operation, “Patrol”...
  • Page 71 • Patrol Sensor Control First 2 minutes from Patrol function activates is stabilization time, during stabilization time, no air dirtiness level is monitored. The Air Dirtiness level is set to Clean, Patrol LED turns blue color. After that, Patrol sensor starts to record the resistance value at fixed interval. Higher resistance value indicates cleaner air.
  • Page 72 • Airflow direction (Horizontal, Vertical) Control During any operation mode combines with Patrol operation, airflow direction follows respective operation mode. During Patrol individual operation if e-ion starts, only Auto Air Swing is allowed. Even if “Air Swing” button is pressed, no signal is sent to air conditioner, and no change on LCD display. During Patrol individual operation if e-ion stops, Airflow direction louver closed.
  • Page 73 • Patrol Operation Demo Mode Patrol Operation Demo Mode start condition ƒ Press “Set” button continuously for 15 seconds by using pointer during Air Conditioner is OFF condition to enter internal setting mode. ƒ Press “Timer Decrement" button to select “Pt demo”. ƒ...

  • Page 74: E-Ion Operation

    12.15 E-ion operation • This operation provides clean air by producing negative ions to attract dust captured at the positively charged active e-ion filters. • e-ion operation start condition During unit running at any operation mode, if “e-ion” operation is selected, combination operation (operation mode + e-ion operation) starts.
  • Page 75 • e-ion Check Mode e-ion abnormality check mode Purpose is to improve sensor serviceability when sensor is malfunction. (1) Control starting condition When all of the conditions are formed ƒ Not in Patrol Demo mode. ƒ e-ion operation ON. ƒ When e-ion check mode signal is received;...
  • Page 76 • Error Detection Control When e-ion indicator blink, it indicates error listed below: Active e-ion Air Purifying system PCB main connector open: ƒ Judgment Method • During e-ion operation (include during Patrol operation), Active e-ion Air Purifying system main connector to PCB is opened. ƒ...

  • Page 77: Eco Patrol Operation

    12.16 ECO Patrol Operation • A Pyoelectric infrared sensor is used to detect injection strength variation of infrared at setting area to determine the presence or absence of human and its activity level. Human detection area is shown in figure below: •...
  • Page 78 • ECO Patrol Demo Mode ƒ Press “Set” button continuously for 15 seconds by using pointer during Air Conditioner is OFF condition to enter internal setting mode. ƒ Press “Timer Decrement" button to select “EC demo”. ƒ Press “Timer Set” button to toggle ECO Patrol Demo mode. •...
  • Page 79 • During ECO Patrol operation, the internal setting temperature and fan speed are adjusted in order to provide comfort and energy saving. • ECO Patrol Start condition. ƒ Press ECO Patrol button to select ECO1 and ECO2. • ECO Patrol Stop condition. ƒ...
  • Page 80 (For Cooling and Soft Dry Operation) • ECO 1 Operation Activity Level High None Temperature Set Speed +1tap Up Set Speed Med Fan Fan Speed • ECO 2 Operation High None Activity Level Temperature Set Speed +1tap Up Set Speed Med Fan Fan Speed (For Heating Operation)
  • Page 81 • ECO Patrol Sensor abnormality check mode • Purpose is to improve sensor serviceability when sensor is malfunction. (1) Control starting condition When all of the conditions are formed ƒ Not in ECO Patrol Demo mode. ƒ ECO Patrol mode ON. ƒ...

  • Page 82: Protection Control

    13. Protection Control (For A9/12KK) 13.1 Restart Control (Time Delay Safety Control) • When the thermo-off temperature (temperature which compressor stops to operate) is reached during: - Cooling/Heating operation - the compressor stops for 3 minutes (minimum) before resume operation. Soft Dry operation - the compressor stops for 6 minutes (minimum) before resume operation.

  • Page 83: Compressor Reverse Rotation Protection Control

    13.6 Compressor Reverse Rotation Protection Control • If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and indoor heat exchanger is 2.5°C (cooling mode)/5°C (heating mode) or less for continuous 2 minutes, compressor will stop and restart automatically.

  • Page 84: Outdoor Fan Motor Control

    13.11 Outdoor Fan Motor Control • When compressor stops (reaches room temperature), outdoor fan will operate for 30 seconds (forced operation). • This is to release the heat and to obtain the lowest pressure as fast as possible. 13.12 Hot Start Control •...

  • Page 85: Deice Control

    13.14 Deice Control Deice starts to prevent frosting at outdoor heat exchanger. • Normal Deice Deice operations detection commences after 30 minutes of Heating operation starts or 60 minutes after previous deice operation. If the TRS (Thermal Reed Switch) senses the outdoor piping temperature drops to -3°C (TRS CLOSE) or less for 50 sec.
  • Page 86 Normal Deice Time Diagram Overload Deice Time Diagram...

  • Page 87: Restart Control (Time Delay Safety Control)

    (For A18/24/28KK) (For 13.15 to 13.21 information applies only to Cooling and Soft Dry Operation) 13.15 Restart Control (Time Delay Safety Control) • When the thermo-off temperature (temperature which compressor stops to operate) is reached during:- Cooling operation - the compressor stops for 3 minutes (minimum) before resume operation. Soft Dry operation - the compressor stops for 6 minutes (minimum) before resume operation.

  • Page 88: Compressor Reverse Rotation Protection Control

    13.20 Compressor Reverse Rotation Protection Control • If the compressor is operating continuously for 5 minutes or longer and the temperature difference between intake air and indoor heat exchanger is 2.5°C or less for continuous 2 minutes, compressor will stop and restart automatically.

  • Page 89: Overload Protection Control

    13.24 Overload Protection Control • Outdoor Fan Control If the temperature of the Outdoor Heat Exchanger less than -3°C, Outdoor Fan is ON. The Outdoor Fan stop, when Outdoor Heat Exchanger temperature is Tb or more according to Outdoor Air Temperature region as table below: The Outdoor Fan restarts when the indoor heat exchanger temperature falls to 49°C.

  • Page 90: Cold Draft Prevention Control

    13.27 Cold Draft Prevention Control 13.28 Deice Control Deice starts to prevent frosting at outdoor heat exchanger. • Normal Deice Deice operation detection commences in Heating operation starts or 60 minutes after previous deice operation. If the outdoor piping temperature drops to -4°C for 50 sec. continuously during compressor is in operation, deice will start.
  • Page 91 a) Normal Deice Time Diagram b) Overload Deice Time Diagram...

  • Page 92: Servicing Mode

    14. Servicing Mode 14.1 Auto OFF/ON Button Auto OFF/ON Auto OFF/ON Auto OFF/ON Button Pressed Button Pressed Button Pressed 5 sec 5 sec Auto Operation Test Run Operation Stop Various Setting Mode Stop (Forced Cooling Operation) “Beep” 2 x “Beep” AUTO OPERATION MODE The Auto Operation will be activated immediately once the Auto OFF/ON button is pressed.

  • Page 93: Remote Control Button

    14.2 Remote Control Button 14.2.1 SET Button • To check current remote control transmission code and store the transmission code to EEPROM: Press “Set” button continuously for 10 seconds by using pointer. Press “Timer Set” button until a “beep” sound is heard as confirmation of transmission code change. •...

  • Page 94: Troubleshooting Guide

    15. Troubleshooting Guide 15.1 Refrigeration cycle system In order to diagnose malfunctions, make sure that there are no Normal Pressure and Outlet Air Temperature (Standard) electrical problems before inspecting the refrigeration cycle. Gas Pressure Outlet air Temperature Such problems include insufficient insulation, problem with the (kg/cm (°C) power source, malfunction of a compressor and a fan.
  • Page 95 15.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Heating Mode Condition of the Electric current Electric current air conditioner Low Pressure High Pressure Low Pressure High Pressure during operation during operation Insufficient refrigerant Ô...

  • Page 96: Disassembly And Assembly Instructions

    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. 16.1 CS-A9KKD-2 CS-A12KKD-2 16.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.1.1.1...
  • Page 97 Figure 3 Figure 4 Figure 5 16.1.1.3 To remove discharge grille Figure 6...
  • Page 98 16.1.1.4 To remove control board Figure 7 16.1.1.5 To remove cross flow fan and indoor fan motor Figure 8 Figure 9...
  • Page 99 Figure 10 Figure 11...

  • Page 100: Cs-A18Kkd-2 Cs-A24Kkd-2 Cs-A28Kkd-2

    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. 16.2 CS-A18KKD-2 CS-A24KKD-2 CS-A28KKD-2 16.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.2.1.1...
  • Page 101 16.2.1.3 To remove power electronic controller Figure 14 Figure 15 Figure 16 Figure 17...
  • Page 102 16.2.1.4 To remove discharge grille Figure 18 16.2.1.5 To remove control board Figure 19 16.2.1.6 To remove cross flow fan and indoor fan motor Figure 20...
  • Page 103 Figure 21 Figure 22 Figure 23...

  • Page 104: Technical Data

    17. Technical Data 17.1 Thermostat Characteristics...

  • Page 105: Operation Characteristics

    17.2 Operation Characteristics 17.2.1 CS-A9KKD-2 CU-A9KKD-2 • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed (Rated Frequency) Piping length: 7.5m 16.200 16.000 15.800 15.600 15.400 15.200 15.000 Outdoor Air Temperature (°C) 2.700 2.600 2.500 2.400 2.300...
  • Page 106 • Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed (Rated Frequency) Piping length: 7.5m 16.000 15.900 15.800 15.700 15.600 15.500 15.400 Piping Length (m) 2.500 2.450 2.400 2.350 2.300 Piping Length (m) 0.560 0.550 0.540 0.530 0.520...
  • Page 107 • Heating Characteristic Room temperature: 20°C Operation condition: High fan speed (Rated Frequency) Piping length: 7.5m 36.000 35.500 35.000 34.500 34.000 33.500 33.000 32.500 32.000 31.500 31.000 Outdoor Air Temperature (°C) 3.100 3.000 2.900 2.800 2.700 2.600 2.500 2.400 2.300 2.200 Outdoor Air Temperature (°C) 3.900...
  • Page 108 • Piping Length Characteristic Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed (Rated Frequency) Piping length: 7.5m 34.400 34.300 34.200 34.100 34.000 33.900 33.800 33.700 33.600 33.500 33.400 33.300 Piping Length (m) 2.800 2.750 2.700 2.650 2.600 2.550 Piping Length (m) 1.520...
  • Page 109 17.2.2 CS-A12KKD-2 CU-A12KKD-2 • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 7.5m 14.400 14.200 14.000 13.800 13.600 13.400 13.200 Outdoor Air Temperature (°C) 3.500 3.400 3.300 3.200 3.100 3.000 Outdoor Air Temperature (°C) 5.400 5.300 5.200...
  • Page 110 • Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length: 7.5m 14.200 14.100 14.000 13.900 13.800 13.700 13.600 Piping Length (m) 3.300 3.250 3.200 3.150 3.100 3.050 Piping Length (m) 0.550 0.540 0.530 0.520 0.510 0.500...
  • Page 111 • Heating Characteristic Room temperature: 20°C Operation condition: High fan speed (Rated Frequency) Piping length: 7.5m 46.000 45.000 44.000 43.000 42.000 41.000 40.000 Outdoor Air Temperature (°C) 4.400 4.300 4.200 4.100 4.000 3.900 3.800 3.700 3.600 3.500 3.400 3.300 Outdoor Air Temperature (°C) 5.800 5.600 5.400...
  • Page 112 • Piping Length Characteristic Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed (Rated Frequency) Piping length: 7.5m 43.000 42.500 42.000 41.500 41.000 40.500 40.000 39.500 Piping Length (m) 4.000 3.950 3.900 3.850 3.800 3.750 3.700 3.650 3.600 Piping Length (m) 1.800 1.780...
  • Page 113 17.2.3 CS-A18KKD-2 CU-A18KKD-2 • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 15.200 15.000 14.800 14.600 14.400 14.200 14.000 Outdoor Air Temperature (°C) 5.600 5.500 5.400 5.300 5.200 5.100 5.000 4.900 4.800 4.700 4.600 Outdoor Air Temperature (°C) 9.000...
  • Page 114 • Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length: 15.400 15.300 15.200 15.100 15.000 14.900 14.800 14.700 14.600 14.500 14.400 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Piping Length (m) 5.300 5.200...
  • Page 115 • Heating Characteristic Room temperature: 20°C Operation condition: High fan speed (Rated Frequency) Piping length: 37.500 37.000 36.500 36.000 35.500 35.000 34.500 34.000 33.500 33.000 Outdoor Air Temperature (°C) 6.000 5.500 5.000 4.500 4.000 3.500 Outdoor Air Temperature (°C) 8.000 7.800 7.600 7.400...
  • Page 116 • Piping Length Characteristic Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed (Rated Frequency) Piping length: 37.200 37.100 37.000 36.900 36.800 36.700 36.600 36.500 36.400 36.300 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Piping Length (m) 5.650 5.600...
  • Page 117 17.2.4 CS-A24KKD-2 CU-A24KKD-2 • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 13.800 13.600 13.400 13.200 13.000 12.800 12.600 Outdoor Air Temperature (°C) 7.000 6.900 6.800 6.700 6.600 6.500 6.400 6.300 6.200 6.100 6.000 5.900 Outdoor Air Temperature (°C)
  • Page 118 • Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length: 14.000 13.900 13.800 13.700 13.600 13.500 13.400 13.300 13.200 13.100 13.000 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Piping Length (m) 6.600 6.500...
  • Page 119 • Heating Characteristic Room temperature: 20°C Operation condition: High fan speed (Rated Frequency) Piping length: 41.000 40.000 39.000 38.000 37.000 36.000 35.000 34.000 33.000 32.000 Outdoor Air Temperature (°C) 7.500 7.000 6.500 6.000 5.500 Outdoor Air Temperature (°C) 12.600 12.400 12.200 12.000 11.800...
  • Page 120 • Piping Length Characteristic Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed (Rated Frequency) Piping length: 40.200 40.000 39.800 39.600 39.400 39.200 39.000 38.800 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Piping Length (m) 7.800 7.700...
  • Page 121 17.2.5 CS-A28KKD-2 CU-A28KKD-2 • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 14.000 13.500 13.000 12.500 12.000 11.500 11.000 10.500 10.000 9.500 Outdoor Air Temperature (°C) 7.800 7.700 7.600 7.500 7.400 7.300 7.200 7.100 7.000 6.900...
  • Page 122 • Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length: 14.100 14.000 13.900 13.800 13.700 13.600 13.500 13.400 13.300 13.200 13.100 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Piping Length (m) 7.400 7.300...
  • Page 123 • Heating Characteristic Room temperature: 20°C Operation condition: High fan speed (Rated Frequency) Piping length: 41.000 40.000 39.000 38.000 37.000 36.000 35.000 Outdoor Air Temperature (°C) 10.000 9.500 9.000 8.500 8.000 7.500 Outdoor Air Temperature (°C) 15.500 15.000 14.500 14.000 13.500 13.000 12.500...
  • Page 124 • Piping Length Characteristic Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed (Rated Frequency) Piping length: 39.400 39.200 39.000 38.800 38.600 38.400 38.200 38.000 37.800 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Piping Length (m) 9.200 9.000...
  • Page 125 18. Exploded View and Replacement Parts List 18.1 Indoor Unit 18.1.1 CS-A9KKD-2 CS-A12KKD-2 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.
  • Page 126 REF. NO. PART NAME & DESCRIPTION QTY. CS-A9KKD-2 CS-A12KKD-2 REMARK CHASSY COMPLETE CWD50C1653 FAN MOTOR CWA921409 CWA921415 CROSS FLOW FAN COMPLETE CWH02C1076 BEARING ASS’Y CWH64K007 SCREW - CROSS FLOW FAN CWH551146 ION GENERATOR CWH94C0028 EVAPORATOR CO. CWB30C3154 CWB30C2945 FLARE NUT (LIQUID)
  • Page 127 P.S. CORD CO. CWA20C2827 (Note) • All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). • “O” marked parts are recommended to be kept in stock.
  • Page 128 18.1.2 CS-A18KKD-2 CS-A24KKD-2 CS-A28KKD-2 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.
  • Page 129 REF. PART NAME & DESCRIPTION QTY. CS-A18KKD-2 CS-A24KKD-2 CS-A28KKD-2 REMARK CHASSY COMPLETE CWD50C1654 FAN MOTOR L6CBYYYL0037 L6CBYYYL0039 CROSS FLOW FAN COMPLETE CWH02C1077 BEARING ASS’Y CWH64K007 SCREW - CROSS FLOW FAN CWH551146 ION GENERATOR CWH94C0028 EVAPORATOR CWB30C2730 CWB30C2779 CWB30C2777 FLARE NUT (LIQUID) CWT251026 FLARE NUT (GAS) CWT251062...
  • Page 130 INSTALLATION INSTRUCTION CWF614252 POWER SUPPLY CORD-COMPLETE CWA20C2829 CWA20C2836 (Note) • All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). “O” marked parts are recommended to be kept in stock.
  • Page 131 18.2 Outdoor Unit 18.2.1 CU-A9KKD-2 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.
  • Page 132 REF. NO. PART NAME & DESCRIPTION QTY. CU-A9KKD-2 REMARK CHASSY ASS’Y CWD50K2112 SOUND PROOF MATERIAL CWG302255 FAN MOTOR BRACKET CWD541075 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951674 SCREW - FAN MOTOR MOUNT CWH55406J PROPELLER FAN ASS’Y CWH03K1020 NUT - PROPELLER FAN CWH56053J COMPRESSOR 2PS156D3DA02...
  • Page 133 18.2.2 CU-A12KKD-2 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.
  • Page 134 REF. NO. PART NAME & DESCRIPTION QTY. CU-A12KKD-2 REMARK CHASSY ASS’Y CWD50K2074 SOUND PROOF MATERIAL CWG302110 FAN MOTOR BRACKET CWD541030 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951121J SCREW - FAN MOTOR MOUNT CWH55406J PROPELLER FAN ASS’Y CWH03K1006 NUT - PROPELLER FAN CWH56053J COMPRESSOR 2PS206D2BA02...
  • Page 135 18.2.3 CU-A18KKD-2 CU-A24KKD-2 CU-A28KKD-2 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.
  • Page 136 DESCRIPTION & NAME QTY. CU-A18KKD-2 CU-A24KKD-2 CU-A28KKD-2 REMARK CHASSY ASSY CWD50K2087 COMPRESSOR 2JS318D3AA04 2JS438D3JA02 2JD514E3AA03 ANTI-VIBRATION BUSHING CWH50055 NUT-COMPRESSOR MOUNT CWH561049 PACKING CWB81043 CONDENSER CWB32C2678 CWB32C2679 CWB32C2681 SOUND PROOF BOARD CWH151051 CWH151056 FAN MOTOR BRACKET CWD541055 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951385J...

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