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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-A9MKD
CS-A12MKD
CS-A18MKD
CS-A24MKD
CS-A28MKD
WARNING
© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2011.
Unauthorized copying and distribution is a violation of law.
Order No: PHAAM1101042C3
Outdoor Unit
CU-A9MKD
CU-A12MKD
CU-A18MKD
CU-A24MKD
CU-A28MKD
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Table of Contents
Related Manuals for Panasonic CS-A9MKD
Summary of Contents for Panasonic CS-A9MKD
- 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. 2011. Unauthorized copying and distribution is a violation of law.
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Page 2: Table Of Contents
15.1 Refrigeration cycle system ......91 12. Operation Control..........47 16. Disassembly and Assembly Instructions ..93 12.1 Heating Operation ........47 16.1 CS-A9MKD CS-A12MKD ......93 12.2 Cooling Operation........50 16.2 CS-A18MKD CS-A24MKD CS-A28MKD. 97 12.3 Soft Dry Operation........52 17. Technical Data ..........101 12.4... -
Page 3: 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 4 WARNING 20. 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. 21. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire. 22.
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Page 5: Specification
2. Specification Indoor CS-A9MKD CS-A12MKD Model Outdoor CU-A9MKD CU-A12MKD Performance Test Condition NEW JIS NEW JIS Phase, Hz Single, 50 Single, 50 Power Supply 2.65 2.65 3.52 3.54 Capacity BTU/h 9040 9040 12000 12100 Kcal/h 2280 2280 3030 3040 Running Current Input Power 1.08k... - Page 6 Type Propeller Fan Propeller Fan Material PP Resin PP Resin Motor Type Induction (6 poles) Induction (6 poles) Input Power 55.6 - 63.1 65 - 73 Output Power Speed 800 - 830 835 - 845 Moisture Removal L/h (Pt/h) 1.6 (3.4) 2.0 (4.2) Cooling: 5.40 (191) Cooling: 6.10 (215)
- Page 7 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) Specifications are subjected to change without prior notice for further improvement.
- Page 8 Indoor CS-A18MKD CS-A24MKD Model Outdoor CU-A18MKD CU-A24MKD Performance Test Condition NEW JIS NEW JIS Phase, Hz Single, 50 Single, 50 Power Supply 5.30 5.30 7.03 7.03 Capacity BTU/h 18100 18100 24000 24000 Running Current 12.3 12.2 Input Power 1.72k 1.76k 2.54k 2.58k 3.08...
- Page 9 Type Propeller Fan Propeller Fan Material PP Resin PP Resin Motor Type Induction (6 poles) Induction (6 poles) Input Power 116 - 122 116 - 122 Output Power 460 - 490 460 - 490 Speed 815 - 830 815 - 830 Moisture Removal L/h (Pt/h) 2.9 (6.1)
- Page 10 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 11 Indoor CS-A28MKD Model Outdoor CU-A28MKD Performance Test Condition NEW JIS Phase, Hz Single, 50 Power Supply 8.00 8.00 Capacity BTU/h 27300 27300 kJ/h 28800 28800 Running Current 13.2 12.7 Input Power 2.86k 2.88k 2.80 2.78 Btu/hW 9.55 9.48 Power Factor dB-A 49 / 44 Indoor Noise (H / L)
- Page 12 Type Propeller Fan Material Motor Type Induction (6 poles) Input Power 146.7 - 154.9 Output Power 460 - 490 Speed 840 - 855 Moisture Removal L/h (Pt/h) 4.7 (9.9) Cooling: 14.50 (512) /min (ft /min) Heating: 14.50 (512) Cooling: 15.90 (561) /min (ft /min) Heating: 17.10 (604)
- Page 13 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)
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Page 14: Features
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-A9MK, long piping up to 10 meters. -
Page 15: Location Of Controls And Components
4. Location of Controls and Components Indoor Unit Outdoor Unit Remote Control... -
Page 16: Dimensions
5. Dimensions Indoor Unit 5.1.1 CS-A9MKD CS-A12MKD... - Page 17 5.1.2 CS-A18MKD CS-A24MKD CS-A28MKD...
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Page 18: Outdoor Unit
Outdoor Unit 5.2.1 CU-A9MKD 5.2.2 CU-A12MKD... - Page 19 5.2.3 CU-A18MKD CU-A24MKD CS-A28MKD...
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Page 20: Refrigeration Cycle Diagram
6. Refrigeration Cycle Diagram CS-A9MKD CU-A9MKD CS-A12MKD CU-A12MKD... -
Page 21: Cs-A18Mkd Cu-A18Mkd Cs-A24Mkd Cu-A24Mkd Cs-A28Mkd Cu-A28Mkd
CS-A18MKD CU-A18MKD CS-A24MKD CU-A24MKD CS-A28MKD CU-A28MKD... -
Page 22: Block Diagram
7. Block Diagram CS-A9MKD CU-A9MKD... -
Page 23: Cs-A12Mkd Cu-A12Mkd
CS-A12MKD CU-A12MKD... -
Page 24: Cs-A18Mkd Cu-A18Mkd Cs-A24Mkd Cu-A24Mkd
CS-A18MKD CU-A18MKD CS-A24MKD CU-A24MKD... -
Page 25: Cs-A28Mkd Cu-A28Mkd
CS-A28MKD CU-A28MKD... -
Page 26: Wiring Connection Diagram
8. Wiring Connection Diagram CS-A9MKD CU-A9MKD Resistance of Indoor Fan Motor Windings Resistance of Compressor Windings MODEL CS-A9MKD MODEL CU-A9MKD CONNECTION CWA921434 CONNECTION 2PS156D3DA02 BLUE-YELLOW 351.3Ω 4.228Ω YELLOW-RED 343.9Ω 3.841Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature. -
Page 27: Cs-A12Mkd Cu-A12Mkd
CS-A12MKD CU-A12MKD Resistance of Indoor Fan Motor Windings Resistance of Compressor Windings MODEL CS-A12MKD MODEL CU-A12MKD CONNECTION CWA921434 CONNECTION 2PS206D2BA06 BLUE-YELLOW 351.3Ω 3.252Ω YELLOW-RED 343.9Ω 4.313Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature. Resistance of Outdoor Fan Motor Windings MODEL CU-A12MKD... -
Page 28: Cs-A18Mkd Cu-A18Mkd Cs-A24Mkd Cu-A24Mkd
CS-A18MKD CU-A18MKD CS-A24MKD CU-A24MKD Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-A18MKD CU-A24MKD MODEL CU-A18MKD CU-A24MKD CONNECTION CWA951353J CWA951353J CONNECTION 2JS318D3AA04 2JS438D3CC04 BLUE-YELLOW 74.60Ω 74.60Ω 1.618Ω 1.121Ω YELLOW-ORANGE 122.20Ω 122.20Ω 3.718Ω 2.535Ω YELLOW-RED 83.40Ω 83.40Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature. -
Page 29: Cs-A28Mkd Cu-A28Mkd
CS-A28MKD CU-A28MKD Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-A28MKD MODEL CU-A28MKD CONNECTION CWA951294J CONNECTION 2JD514E3AA03 BLUE-YELLOW 102Ω 1.022Ω YELLOW-ORANGE 81Ω 2.142Ω YELLOW-RED 108Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 25°C of ambient temperature. -
Page 30: Electronic Circuit Diagram
9. Electronic Circuit Diagram CS-A9MKD CU-A9MKD... -
Page 31: Cs-A12Mkd Cu-A12Mkd
CS-A12MKD CU-A12MKD... -
Page 32: Cs-A18Mkd Cu-A18Mkd Cs-A24Mkd Cu-A24Mkd
CS-A18MKD CU-A18MKD CS-A24MKD CU-A24MKD... -
Page 33: Cs-A28Mkd Cu-A28Mkd
CS-A28MKD CU-A28MKD... -
Page 34: Printed Circuit Board
10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board 10.1.1.1 CS-A9MKD CS-A12MKD... - Page 35 10.1.1.2 CS-A18MKD CS-A24MKD CS-A28MKD...
- Page 36 10.1.2 Indicator Printed Circuit Board 10.1.3 Receiver Printed Circuit Board 10.1.4 High Voltage Power Supply Printed Circuit Board 10.1.5 Comparator Printed Circuit Board...
- Page 37 10.1.6 Human Activity Sensor Printed Circuit Board...
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Page 38: 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 39: Indoor Unit
11.2 Indoor Unit 11.2.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent if from the vibration. The centre of installation plate should be at more than at right and left of the wall. The distance from installation plate edge to ceiling should more than From installation plate left edge to unit’s left side is From installation plate right edge to unit’s right side is... - Page 40 11.2.3 Indoor Unit Installation 11.2.3.1 For the right rear piping 11.2.3.2 For the right and right bottom piping 11.2.3.3 For the embedded piping (This can be used for left rear piping and bottom piping also.
- Page 41 11.2.4 Connect the Cable to the Indoor Unit The inside and outside connection cable can be connected without removing the front grille. a) INDOOR POWER SUPPLY MODEL (1.0 ~ 2.5HP) Connection 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 42 b) OUTDOOR POWER SUPPLY MODEL (3.0HP) Connection 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 connection cable onto the control board with the holder.
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Page 43: 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 44 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 45 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 46 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.
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Page 47: Operation Control
12. Operation Control 12.1 Heating Operation • Heating operation can be set using remote control. • This operation is applied to warm the room temperature reaches the setting temperature set on the remote control. • The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 16°C to 30°C. - Page 48 12.1.1 Heating Operation Time Diagram (For CS-A9MKD CU-A9MKD and CS-A12MKD CU-A12MKD)
- Page 49 12.1.2 Heating Operation Time Diagram (For CS-A18MKD CU-A18MKD, CS-A24MKD CU-A24MKD and CS-A28MKD CU-A28MKD)
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Page 50: 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-A9MKD CU-A9MKD and CS-A12MKD CU-A12MKD) - Page 51 12.2.2 Cooling Operation Time Diagram (For CS-A18MKD CU-A18MKD, CS-A24MKD CU-A24MKD and CS-A28MKD CU-A28MKD)
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Page 52: 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-A9MKD CU-A9MKD and CS-A12MKD CU-A12MKD) - Page 53 12.3.2 Soft Dry Operation Time Diagram (For CS-A18MKD CU-A18MKD, CS-A24MKD CU-A24MKD and CS-A28MKD CU-A28MKD)
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Page 54: Automatic Operation
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. • After judged the temperature, the operation mode is determined by referring to the below standard. Cooling Operation ↑... -
Page 55: Indoor Fan Speed Control
JX03 at indoor unit’s printed circuit board. 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-A9MKD CS-A12MKD 1080 1120 1040 1100 SSLo... - Page 56 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-A9MKD and CS-A12MKD Speed Mode SSLo Stop...
- Page 57 For CS-A18MKD, CS-A24MKD and CS-A28MKD Speed Mode SSLo Stop Manual Normal Auto Manual Powerful Auto Manual Auto Manual Normal Auto Manual Powerful Auto Auto Mode Judgment Manual Quiet Auto Manual Quiet Auto -100 Manual Quiet -170 Auto -170...
- Page 58 • Auto Fan Speed during cooling operation: Indoor fan will rotate alternately between off and on as shown in below diagram. At the beginning of each compressor starts operation, indoor fan speed increases gradually for deodorizing purpose. For the first time the compressor operates, indoor fan will be switched to Hi fan speed from Lo- after 70 seconds from the start of compressor.
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Page 59: Outdoor Fan Speed Control
• Auto Fan Speed during Heating operation. Indoor fan will rotate in the range of SLo → Me according to the heat exchanger temperature. (For A9MKD and A12MKD) (For A18MKD, A24MKD and A28MKD) 12.5.3 Manual Fan Speed Control • Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control. •... -
Page 60: Vertical Airflow Direction 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-A9MKD and CS-A12MKD Horizontal Upper limit for cooling mode and soft dry mode/11°... - Page 61 The louver can be adjusted by pressing the button to the desired louver position. • When stop operation using the remote control, the discharge vent is reset, and stop at the closing position. (Cooling and Soft Dry Operation Condition) For CS-A9MKD and CS-A12MKD Horizontal Upper limit for cooling mode and 11°...
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Page 62: Horizontal Airflow Direction Control
For CS-A18MKD, CS-A24MKD and CS-A28MKD Horizontal 17° Upper limit for Closing heating mode position 27° / 148° 33° 42° 52° Lower limit for heating mode 12.8 Horizontal Airflow Direction Control 12.8.1 Auto Control • When the horizontal airflow direction is set to Auto using the remote control, the vanes swings left and right as shown in the diagram. -
Page 63: 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 64: 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 brightness will be dimmed. 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 65 (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. • Quiet setting of fan speed rpm refer to Indoor Fan Speed Control.
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Page 66: 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 67: 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 68 • 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 69 • 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 70 • Patrol Operation Demo Mode Patrol Operation Demo Mode start condition Press “Set” button continuously for 15 seconds by using pointer during Air Conditioner is OFF condition to enter internal setting mode. Press “Timer Decrement" button to select “Pt demo”. Press “Timer Set”...
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Page 71: 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 72 • 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 Not in Patrol Demo mode. e-ion operation ON. When e-ion check mode signal is received; the procedure of selection is as shown: •...
- Page 73 • Error Detection Control When e-ion indicator blink, it indicates error listed below: Active e-ion Air Purifying system PCB main connector open: Judgment Method • During e-ion operation (include during Patrol operation), Active e-ion Air Purifying system main connector to PCB is opened. Troubleshooting Methods •...
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Page 74: Auto Comfort And Eco Navi Operation
12.16 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. - Page 75 12.16.1 Signal Detection 120º • Human Activity sensor will turns on according to infrared sensors signal detection. Signal detection Human Activity Indicator Possible detected human position area Sensor 1 Sensor 2 Left Center Right ■ ■ □ □ ■ ■ ■...
- Page 76 12.16.7 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: Horizontal airflow direction louver position Target area Left installation Center installation Right installation •...
- Page 77 12.16.9 ECO NAVI and AUTO COMF Demo Mode • To enable ECO DEMO mode: Remote control normal mode Press continously for 15s Transmit Patrol default OFF/ON code (Buzzer: OFF:peep, ON:peep) Transmit Patrol demo code (Buzzer: OFF:peep, ON:peep) Transmit ECO demo code (Buzzer: OFF:peep, ON:peep) Transmit check code (Buzzer:peep)
- Page 78 12.16.10 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 •...
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Page 79: Protection Control
13. Protection Control (For A9/12MK) 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 80: 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 81: 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 82: 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 83 Normal Deice Time Diagram Overload Deice Time Diagram...
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Page 84: Restart Control (Time Delay Safety Control)
(For A18/24/28MK) (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 85: 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 86: 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 87: 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 88 a) Normal Deice Time Diagram b) Overload Deice Time Diagram...
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Page 89: 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 90: 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 91: 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 92 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 (gas leakage) Clogged capillary tube or strainer...
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Page 93: 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-A9MKD CS-A12MKD 16.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.1.1.1... - Page 94 Figure 3 Figure 4 16.1.1.3 To remove discharge grille Figure 5...
- Page 95 16.1.1.4 To remove control board Figure 6 16.1.1.5 To remove cross flow fan and indoor fan motor Figure 7 Figure 8...
- Page 96 Figure 9 Figure 10...
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Page 97: Cs-A18Mkd Cs-A24Mkd Cs-A28Mkd
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-A18MKD CS-A24MKD CS-A28MKD 16.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.2.1.1... - Page 98 16.2.1.3 To remove power electronic controller Figure 13 Figure 14 Figure 15...
- Page 99 16.2.1.4 To remove discharge grille Figure 16 16.2.1.5 To remove control board Figure 17 16.2.1.6 To remove cross flow fan and indoor fan motor Figure 18...
- Page 100 Figure 19 Figure 20 Figure 21...
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Page 101: Technical Data
17. Technical Data 17.1 Thermostat Characteristics... -
Page 102: Operation Characteristics
17.2 Operation Characteristics 17.2.1 CS-A9MKD CU-A9MKD • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 7.5m... - Page 103 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed...
- Page 104 • Heating Characteristic Room temperature: 20°C Operation condition: High fan speed Piping length: 7.5m...
- Page 105 • Piping Length Characteristic Room temperature: 20°C Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed...
- Page 106 17.2.2 CS-A12MKD CU-A12MKD • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 7.5m...
- Page 107 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed...
- Page 108 • Heating Characteristic Room temperature: 20°C Operation condition: High fan speed Piping length: 7.5m...
- Page 109 • Piping Length Characteristic Room temperature: 20°C (DBT) Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed...
- Page 110 17.2.3 CS-A18MKD CU-A18MKD • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length:...
- Page 111 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length:...
- Page 112 • Heating Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Piping length:...
- Page 113 • Piping Length Characteristic Room temperature: 20°C (DBT) Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed (Rated Frequency) Piping length:...
- Page 114 17.2.4 CS-A24MKD CU-A24MKD • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length:...
- Page 115 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length:...
- Page 116 • Heating Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Piping length:...
- Page 117 • Piping Length Characteristic Room temperature: 20°C (DBT) Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed Piping length:...
- Page 118 17.2.5 CS-A28MKD CU-A28MKD • Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length:...
- Page 119 • Piping Length Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length:...
- Page 120 • Heating Characteristic Room temperature: 20°C (DBT) Operation condition: High fan speed Piping length:...
- Page 121 • Piping Length Characteristic Room temperature: 20°C (DBT) Outdoor temperature: 7°C (DBT), 6°C (WBT) Operation condition: High fan speed Piping length:...
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Page 122: Exploded View And Replacement Parts List122
18. Exploded View and Replacement Parts List 18.1 Indoor Unit 18.1.1 CS-A9MKD CS-A12MKD 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 123 REF. PART NAME & DESCRIPTION CS-A9MKD CS-A12MKD REMARK CHASSIS COMPLETE CWD50C1599 ← FAN MOTOR CWA921434 ← CROSS FLOW FAN COMPLETE CWH02C1076 ← BEARING ASS’Y CWH64K007 ← SCREW - CROSS FLOW FAN CWH551146 ← GENERATOR COMPLETE CWH94C0028 ← EVAPORATOR CWB30C3154 CWB30C3360...
- Page 124 OPERATING INSTRUCTION CWF567875 ← INSTALLATION INSTRUCTION CWF614767 ← INSTALLATION INSTRUCTION CWF614768 ← INSTALLATION INSTRUCTION CWF614769 ← COVER FOR RECEIVER (UPPER) CWD933022 ← COVER FOR RECEIVER (BOTTOM) CWD933209 ← POWER SUPPLY CORD CWA20C2827 ← INSTALLATION INSTRUCTION CWF614770 ← (Note) • All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). •...
- Page 125 18.1.2 CS-A18MKD CS-A24MKD CS-A28MKD 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 CS-A18MKD CS-A24MKD CS-A28MKD REMARK CHASSIS COMPLETE CWD50C1623 ← ← FAN MOTOR ARW7628AC ARW7627AC ← CROSS FLOW FAN COMPLETE CWH02C1077 ← ← BEARING ASS’Y CWH64K007 ← ← SCREW - CROSS FLOW FAN CWH551146 ← ← ION GENERATOR CWH94C0028 ←...
- Page 127 BAG COMPLETE - INSTALLATION SCREW CWH82C1705 ← ← INSTALLATION PLATE CWH361098 ← ← FULCRUM CWH621103 ← ← OPERATING INSTRUCTION CWF567875 ← ← INSTALLATION INSTRUCTION CWF614767 ← ← INSTALLATION INSTRUCTION CWF614768 ← ← INSTALLATION INSTRUCTION CWF614769 ← ← POWER SUPPLY CORD CWA20C2829 CWA20C2836 INSTALLATION INSTRUCTION...
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Page 128: Outdoor Unit
18.2 Outdoor Unit 18.2.1 CU-A9MKD 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 CU-A9MKD REMARK CHASSIS ASS’Y CWD50K2112 SOUND PROOF MATERIAL CWG302255 FAN MOTOR BRACKET CWD541075 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951388J SCREW - FAN MOTOR MOUNT CWH55406J PROPELLER FAN ASS’Y CWH03K1020 NUT - PROPELLER FAN CWH56053J COMPRESSOR 2PS156D3DA02...
- Page 130 18.2.2 CU-A12MKD 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 131 REF. PART NAME & DESCRIPTION CU-A12MKD REMARK CHASSIS 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 2PS206D2BA06...
- Page 132 18.2.3 CU-A18MKD CU-A24MKD 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 133 REF. NO. PART NAME & DESCRIPTION CU-A18MKD CU-A24MKD REMARK CHASSIS ASS’Y CWD50K2087 ← COMPRESSOR 2JS318D3AA04 2JS438D3CC04 ANTI - VIBRATION BUSHING CWH50055 ← NUT - COMPRESSOR MOUNT CWH561049 ← PACKING CWB81043 ← CONDENSER CWB32C2678 CWB32C2679 SOUND PROOF BOARD CWH151051 ← FAN MOTOR BRACKET CWD541055 ←...
- Page 134 18.2.4 CU-A28MKD 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 135 REF. PART NAME & DESCRIPTION CU-A28MKD REMARK CHASSIS ASSY CWD50K2087 COMPRESSOR 2JD514E3AA03 ANTI-VIBRATION BUSHING CWH50055 NUT-COMPRESSOR MOUNT CWH561049 PACKING CWB81043 CONDENSER CWB32C2681 SOUND PROOF BOARD CWH151056 FAN MOTOR BRACKET CWD541055 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951294J SCREW - FAN MOTOR MOUNT CWH55252J PROPELLER FAN ASSY CWH03K1017...