Panasonic CS-C9MKV Service Manual
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Panasonic CS-C9MKV 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-C9MKV
CS-C12MKV
CS-C18MKV
CS-C24MKV
CS-C28MKV
WARNING
© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2011.
Unauthorized copying and distribution is a violation of law.
Order No: PHAAM1101045C3
Outdoor Unit
CU-C9MKV
CU-C12MKV
CU-C18MKV
CU-C24MKV
CU-C28MKV

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Summary of Contents for Panasonic CS-C9MKV

  • 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.

  • Page 2: Table Of Contents

    15.1 Refrigeration cycle system ......74 Outdoor Unit ..........15 16. Disassembly and Assembly Instructions ..76 6. Refrigeration Cycle Diagram ......17 16.1 CS-C9MKV CS-C12MKV ......76 7. Block Diagram ..........18 16.2 CS-C18MKV CS-C24MKV ....... 80 16.3 CS-C28MKV ..........84 8. Wiring Connection Diagram ......21 17.

  • 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. The caution items stated here must be followed because these important contents are related to safety.
  • Page 4 WARNING 19. During installation, install the refrigerant piping properly before run the compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will caused suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc). 20.

  • Page 5: Specification

    2. Specification Indoor CS-C9MKV CS-C12MKV Model Outdoor CU-C9MKV CU-C12MKV Performance Test Condition NEW JIS NEW JIS Phase, Hz Single, 60 Single, 60 Power Supply 2.65 3.56 Capacity BTU/h 9040 12140 kJ/h 9540 12820 Running Current Input Power 1.11k 3.19 3.21 BTU/hW 10.9...
  • Page 6 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) ~ 10 (32.8) 3 (9.8) ~ 15 (49.2) I/D &...
  • Page 7 Indoor CS-C18MKV CS-C24MKV Model Outdoor CU-C18MKV CU-C24MKV Performance Test Condition NEW JIS NEW JIS Phase, Hz Single, 60 Single, 60 Power Supply 5.30 7.03 Capacity BTU/h 18100 24000 kJ/h 19100 25300 Running Current 12.0 Input Power 1.72k 2.55k 3.08 2.76 BTU/hW 10.52 9.41...
  • Page 8 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) 5.0 (16.4) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 25 (82.0) 3 (9.8) ~ 25 (82.0) I/D &...
  • Page 9 Indoor CS-C28MKV Model Outdoor CU-C28MKV Performance Test Condition NEW JIS Phase, Hz Single, 60 Power Supply 8.40 Capacity BTU/h 28600 kJ/h 30240 Running Current 15.9 Input Power 3.42k 2.46 BTU/hW 8.36 Power Factor dB-A 49 / 44 Indoor Noise (H / L) Power Level dB dB-A 55 / -...
  • Page 10 Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 15.88 (5/8) Standard length m (ft) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 30 (98.4) I/D & O/D Height different m (ft) 20 (65.6) Additional Gas Amount g/m (oz/ft) 30 (0.3) Length for Additional Gas...

  • Page 11: 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-C9MK, long piping up to 10 meters.

  • Page 12: Location Of Controls And Components

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

  • Page 13: Dimensions

    5. Dimensions Indoor Unit 5.1.1 CS-C9MKV CS-C12MKV...
  • Page 14 5.1.2 CS-C18MKV CS-C24MKV CS-C28MKV...

  • Page 15: Outdoor Unit

    Outdoor Unit 5.2.1 CU-C9MKV 5.2.2 CU-C12MKV...
  • Page 16 5.2.3 CU-C18MKV CU-C24MKV CU-C28MKV...

  • Page 17: Refrigeration Cycle Diagram

    6. Refrigeration Cycle Diagram...

  • Page 18: Block Diagram

    7. Block Diagram 7.1.1 CS-C9MKV CU-C9MKV CS-C12MKV CU-C12MKV...
  • Page 19 7.1.2 CS-C18MKV CU-C18MKV CS-C24MKV CU-C24MKV...
  • Page 20 7.1.3 CS-C28MKV CU-C28MKV...

  • Page 21: Wiring Connection Diagram

    8. Wiring Connection Diagram CS-C9MKV CU-C9MKV Resistance of Indoor Fan Motor Windings Resistance of Compressor Windings MODEL CS-C9MKV MODEL CU-C9MKV CONNECTION CWA921443 CONNECTION 2R13C236BSC BLUE-YELLOW 382.0Ω 3.298Ω YELLOW-RED 226.8Ω 5.500Ω Note: Resistance at 25°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

  • Page 22: Cs-C12Mkv Cu-C12Mkv

    CS-C12MKV CU-C12MKV Resistance of Indoor Fan Motor Windings Resistance of Compressor Windings MODEL CS-C12MKV MODEL CU-C12MKV CONNECTION CWA921443 CONNECTION 2P19S236A1L BLUE-YELLOW 382.0Ω 2.237Ω YELLOW-RED 226.8Ω 2.710Ω Note: Resistance at 25°C of ambient temperature. Note: Resistance at 20°C of ambient temperature. Resistance of Outdoor Fan Motor Windings MODEL CU-C12MKV...

  • Page 23: Cs-C18Mkv Cu-C18Mkv

    CS-C18MKV CU-C18MKV Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-C18MK MODEL CU-C18MK CONNECTION CWA951401J CONNECTION 2KS252F5AA04 BLUE-YELLOW 59.47Ω 1.959Ω YELLOW-RED 60.95Ω 3.083Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

  • Page 24: Cs-C24Mkv Cu-C24Mkv

    CS-C24MKV CU-C24MKV Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-C24MK MODEL CU-C24MK CONNECTION CWA951399J CONNECTION 2JS386F3AA04 BLUE-YELLOW 59.47Ω 1.048Ω YELLOW-RED 60.95Ω 1.785Ω YELLOW-ORANGE 80.58Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

  • Page 25: Cs-C28Mkv Cu-C28Mkv

    CS-C28MKV CU-C28MKV Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-C28MK MODEL CU-C28MK CONNECTION CWA951357J CONNECTION 2JD488H3AA03 YELLOW-BLUE 59.8Ω 0.624Ω YELLOW-ORANGE 68.6Ω 1.821Ω YELLOW-RED 66.9Ω Note: Resistance at 20°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

  • Page 26: Electronic Circuit Diagram

    9. Electronic Circuit Diagram CS-C9MKV CU-C9MKV...

  • Page 27: Cs-C12Mkv Cu-C12Mkv

    CS-C12MKV CU-C12MKV...

  • Page 28: Cs-C18Mkv Cu-C18Mkv

    CS-C18MKV CU-C18MKV...

  • Page 29: Cs-C24Mkv Cu-C24Mkv

    CS-C24MKV CU-C24MKV...

  • Page 30: Cs-C28Mkv Cu-C28Mkv

    CS-C28MKV CU-C28MKV...

  • Page 31: Printed Circuit Board

    10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board 10.1.1.1 CS-C9MKV CS-C12MKV...
  • Page 32 10.1.1.2 CS-C18MKV CS-C24MKV CS-C28MKV...
  • Page 33 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 34 10.1.6 Human Activity Sensor Printed Circuit Board...

  • Page 35: Installation Instruction

    11. Installation Instruction 11.1 Select the Best Location 11.1.3 Indoor/Outdoor Unit Installation Diagram 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 36: 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 center 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 37 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 38 11.2.4 Connect the Cable to the Indoor Unit 1. The inside and outside connection cable can be connected without removing the front grille. 2. a) INDOOR POWER SUPPLY MODEL (1.0 ~ 2.5HP) Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 x 1.5 mm (1.0 ~ 1.5HP) or 3 x 2.5 mm (2.0 ~ 2.5HP) flexible cord, type designation 245...
  • Page 39 b) OUTDOOR POWER SUPPLY MODEL (3.0HP) Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5 mm (1.0 ~ 3.0HP) flexible cord, type designation 245 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.

  • Page 40: 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 (ø10 mm). When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
  • Page 41 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 42 11.3.4 Air Purging of the Piping and Indoor The remaining air in the Refrigerant cycle which contains moisture may cause malfunction on the compressor. Remove the caps from the 2-way and 3-way valves. Remove the service-port cap from the 3-way valves. To open the valve, turn the valve stem of 2-way valve counter-clockwise approx.
  • Page 43 11.3.5 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. Connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 3 x 1.5 mm (1.0 ~ 1.5HP) or 3 x 2.5 mm (2.0 ~ 2.5HP) flexible...
  • Page 44 For wire stripping and connection requirement, refer to instruction of the indoor unit. WARNING This equipment must be properly earthed. Isolating Devices (Disconnecting means) should have minimum 3.0 mm contact gap. Earth wire shall be Yellow/Green (Y/G) in colour and longer than other AC wires for safety reason. 11.3.6 Pipe Insulation Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation...

  • Page 45: Operation Control

    12. Operation Control 12.1 Cooling Operation Cooling operation can be set using remote control. This operation is applied to cool down the room temperature to 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 46 12.1.2 Cooling Operation Time Diagram (For CS-C18MK CU-C18MK, CS-C24MK CU-C24MK and CS-C28MK CU-C28MK)

  • Page 47: Soft Dry Operation

    12.2 Soft Dry Operation Soft Dry operation can be set using remote control. Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room. This operation starts when the intake air temperature sensor reaches the setting temperature on the remote control.
  • Page 48 12.2.2 Soft Dry Operation Time Diagram (For CS-C18MK CU-C18MK, CS-C24MK CU-C24MK and CS-C28MK CU-C28MK)

  • Page 49: Automatic Operation

    12.3 Automatic Operation Automatic operation can be set using remote control. This operation starts to operate with indoor fan at SLo speed for 20 seconds to judge the intake air temperature. After judged the temperature, the operation mode is determined by referring to the below standard. ↑...

  • Page 50: Indoor Fan Speed Control

    12.4 Indoor Fan Speed Control Indoor fan speed can be set using remote control. 12.4.1 Fan Speed Rotation Chart Fan Speed (rpm) Speed CS-C9MKV CS-C12MKV 1130 1130 1030 1110 1040 Fan Speed (rpm) Speed CS-C18MKV CS-C24MKV CS-C28MKV 1390 1500 1530...
  • Page 51 For CS-C18MK, CS-C24MK and CS-C28MK Stop Manual Normal Auto Hi-90 Manual Me-90 Quiet CLo-90 Auto Hi-90 Me-90 Manual Powerful Auto Manual Normal Auto Manual Quiet Auto 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.

  • Page 52: Outdoor Fan Speed Control

    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 53 For CS-C18MK, CS-C24MK and CS-C28MK 12.6.2 Manual Control When the vertical airflow direction is set to Manual using the remote control, the automatic airflow is released and the airflow direction louver move up and down in the range shown in the diagram. The louver can be adjusted by pressing the button to the desired louver position.

  • Page 54: Horizontal Airflow Direction Control

    12.7 Horizontal Airflow Direction Control 12.7.1 Auto Control When the horizontal airflow is set to Auto using the remote control, the vanes swings left and right as shown in the diagram. When stopped with remote control, the discharge vanes are reset and stop at the reset position. During Cooling operation or Soft Dry operation, indoor fan motor may stop to rotate at certain periods.

  • Page 55: Powerful Operation

    12.8 Powerful Operation To achieve the setting temperature quickly. 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). This operation automatically running under Shi fan speed (Cooling), Lo- Fan Speed (Soft Dry) is applicable for C9MK and C12MK only.

  • Page 56: Timer Control

    RPM control during Hi & Me cool Auto Fan Speed Quiet operation stops when: Quiet button is pressed again. Stopped by OFF/ON operation button. Timer OFF activates. Operation mode button is changed. 12.10 Timer Control 12.10.1 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 57: Patrol Operation

    12.13 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 58 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 59 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 60 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” button to toggle Patrol operation demo mode. Long "beep": Turn OFF Patrol operation demo mode.

  • Page 61: E-Ion Operation

    12.14 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 62 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: Press “Set”...
  • Page 63 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 Connect the connector or stop operation (include during Patrol operation) to cancel the blinking.

  • Page 64: Auto Comfort And Eco Navi Operation

    12.15 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 65 12.15.1 Signal Detection Human Activity sensor will turns on according to infrared sensors signal detection. Signal detection Possible detected human Human Activity Indicator position area Sensor 1 Sensor 2 Left Center Right ■ ■ □ □ ■ ■ ■ □ ■...
  • Page 66 12.15.7 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 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.
  • Page 67 12.15.9 ECO NAVI and AUTO COMF Demo Mode To enable ECO DEMO mode: To disable ECO Demo MODE: Transmit ECO Demo signal again. Transmit Patrol Demo signal. Operation details Infrared sensor Human Activity Sensor Vane position Fan speed Sensor 1 Sensor 2 Left Center...
  • Page 68 12.15.10 Infrared Sensor Abnormality Abnormality detection: Connector disconnection / Wire cut abnormality Sensor judge Hi level continuously for 25 seconds Circuit abnormality 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.

  • Page 69: Protection Control

    13. Protection Control 13.1 Restart Control (Time Delay Safety Control) When the thermo-off temperature (temperature which compressor stops to operate) is reach 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. If the operation is stopped by the remote control, the compressor will not turn on within 3 minutes from the moment operation stop, although the unit is turn on again within the period.

  • Page 70: Freeze Prevention Control

    13.5 Freeze Prevention Control To protect indoor heat exchanger from freezing and to prevent higher volume of refrigerant in liquid form return to compressor. This control will activate when temperature of indoor heat exchanger falls below 2°C continuously for more than 4 minutes and compressor turn off.

  • Page 71: Dew Prevention Control

    13.7 Dew Prevention Control To prevent dew formation at indoor unit discharge area. This control starts if: Cooling mode or Quiet mode is activated. Remote Control setting temperature is less than 25°C. Fan speed is at CLo or QLo. Room temperature is constant (±1°C) for 30 minutes. Compressor is continuously running.

  • Page 72: 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 73: 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 10 seconds by using pointer. Press “Timer Set” button until a “beep” sound is heard as confirmation of transmission code change. To change the air quality sensor: Press and release by using pointer Press the Timer Decrement button to select sensitivity:...

  • Page 74: Troubleshooting Guide

    15. Troubleshooting Guide 15.1 Refrigeration cycle system In order to diagnose malfunctions, ensure the air conditioner is free Normal Pressure and Outlet Air Temperature (Standard) from 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 75 15.1.1 Relationship between the condition of the air conditioner and pressure and electric current Cooling Mode Condition of the 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...

  • Page 76: 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-C9MKV CS-C12MKV 16.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.1.1.1...
  • Page 77 Figure 3 Figure 4 16.1.1.3 To remove discharge grille Figure 5...
  • Page 78 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 79 Figure 9 Figure 10...

  • Page 80: Cs-C18Mkv Cs-C24Mkv

    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-C18MKV CS-C24MKV 16.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.2.1.1 To remove front grille...
  • Page 81 16.2.1.3 To remove power electronic controller Figure 13 Figure 14 Figure1 5...
  • Page 82 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 83 Figure 19 Figure 20 Figure 21...

  • Page 84: Cs-C28Mkv

    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. 16.3 CS-C28MKV 16.3.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 16.3.1.1 To remove front grille...
  • Page 85 16.3.1.3 To remove power electronic controller Figure 24 Figure 8 Figure 9...
  • Page 86 16.3.1.4 To remove discharge grille Figure 27 16.3.1.5 To remove control board Figure 28 16.3.1.6 To remove cross flow fan and indoor fan motor Figure 29...
  • Page 87 Figure 30 Figure 31 Figure 32...

  • Page 88: Technical Data

    17. Technical Data 17.1 Thermostat Characteristics Cooling Soft Dry...

  • Page 89: Operation Characteristics

    17.2 Operation Characteristics 17.2.1 CS-C9MKV CU-C9MKV Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 7.5m 16.000 15.800 15.600 15.400 15.200 15.000 Outdoor Air Temperature (°C) 2.900 2.800 2.700 2.600 2.500 2.400 Outdoor Air Temperature (°C) 4.200...
  • Page 90 Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length: 7.5m 15.600 15.550 15.500 15.450 15.400 Piping Length (m) 2.700 2.680 2.660 2.640 2.620 2.600 Piping Length (m) 0.570 0.565 0.560 0.555 0.550 0.545 0.540 Piping Length (m) 4.000...
  • Page 91 17.2.2 CS-C12MKV CU-C12MKV Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 7.5m 15.200 15.000 14.800 14.600 14.400 14.200 14.000 Outdoor Air Temperature (°C) 3.900 3.800 3.700 3.600 3.500 3.400 3.300 Outdoor Air Temperature (°C) 5.700 5.500 5.300...
  • Page 92 Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length: 7.5m 14.700 14.650 14.600 14.550 14.500 Piping Length (m) 3.700 3.600 3.500 3.400 Piping Length (m) 0.560 0.555 0.550 0.545 0.540 0.535 0.530 Piping Length (m) 5.450 5.400 5.350...
  • Page 93 17.2.3 CS-C18MKV CU-C18MKV Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 16.000 15.500 15.000 14.500 Outdoor Air Temperature (°C) 5.700 5.500 5.300 5.100 4.900 Outdoor Air Temperature (°C) 8.600 8.400 8.200 8.000 7.800 7.600 7.400 Outdoor Air Temperature (°C)
  • Page 94 Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length: 16.100 15.900 15.700 15.500 15.300 Piping Length (m) 5.500 5.300 5.100 4.900 4.700 Piping Length (m) 0.490 0.470 0.450 0.430 0.410 Piping Length (m) 8.200 8.000 7.800...
  • Page 95 17.2.4 CS-C24MKV CU-C24MKV 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 Outdoor Air Temperature (°C) 7.700 7.500 7.300 7.100 6.900 6.700 6.500 Outdoor Air Temperature (°C) 13.100 12.600 12.100 11.600...
  • Page 96 Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length: 14.000 13.800 13.600 13.400 13.200 13.000 Piping Length (m) 7.100 6.900 6.700 6.500 6.300 Piping Length (m) 0.410 0.390 0.370 0.350 0.330 Piping Length (m) 12.300 12.100 11.900...
  • Page 97 17.2.5 CS-C28MKV CU-C28MKV Cooling Characteristic Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping length: 15.400 15.200 15.000 14.800 14.600 14.400 Outdoor Air Temperature (°C) 9.000 8.800 8.600 8.400 8.200 8.000 7.800 Outdoor Air Temperature (°C) 17.200 16.700 16.200 15.700...
  • Page 98 Piping Length Characteristic Outdoor temperature: 35°C (DBT), 24°C (WBT) Operation condition: High fan speed Piping length: 15.800 15.600 15.400 15.200 15.000 14.800 Piping Length (m) 8.500 8.300 8.100 7.900 7.700 7.500 7.300 7.100 Piping Length (m) 0.430 0.410 0.390 0.370 0.350 0.330 Piping Length (m)

  • Page 99: Exploded View And Replacement Parts List

    18. Exploded View and Replacement Parts List 18.1 Indoor Unit 18.1.1 CS-C9MKV CS-C12MKV 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 100 REF. PART NAME & DESCRIPTION CS-C9MKV CS-C12MKV REMARK CHASSIS COMPLETE CWD50C1653 ← FAN MOTOR CWA921443 ← CROSS FLOW FAN COMPLETE CWH02C1076 ← BEARING ASS’Y CWH64K007 ← SCREW - CROSS FLOW FAN CWH551146 ← GENERATOR COMPLETE CWH94C0028 ← EVAPORATOR CWB30C2969 CWB30C3361...
  • Page 101 OPERATING INSTRUCTION CWF567834 ← INSTALLATION INSTRUCTION CWF614661 ← INSTALLATION INSTRUCTION CWF614662 ← COVER FOR RECEIVER (UPPER) CWD933022 ← COVER FOR RECEIVER (BOTTOM) CWD933209 ← P.S. CORD CO. CWA20C2827 ← (Note) All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488). “O”...
  • Page 102 18.1.2 CS-C18MKV CS-C24MKV CS-C28MKV 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 103 REF. PART NAME & DESCRIPTION CS-C18MKV CS-C24MKV CS-C28MKV 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 104 BAG COMPLETE - INSTALLATION SCREW CWH82C1705 ← ← INSTALLATION PLATE CWH361098 ← ← FULCRUM CWH621103 ← ← OPERATING INSTRUCTION CWF567834 ← ← INSTALLATION INSTRUCTION CWF614661 ← ← INSTALLATION INSTRUCTION CWF614662 ← ← POWER SUPPLY CORD - COMPLETE CWA20C2829 CWA20C2836 (Note) All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488).

  • Page 105: Outdoor Unit

    18.2 Outdoor Unit 18.2.1 CU-C9MKV 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 106 18.2.2 CU-C12MKV 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 107 REF. PART NAME & DESCRIPTION CU-C9MKV CU-C12MKV REMARK CHASSIS ASS’Y CWD50K2107 CWD50K2071 SOUND PROOF MATERIAL CWG302254 CWG302126 FAN MOTOR BRACKET CWD541075 CWD541030 SCREW - FAN MOTOR BRACKET CWH551217 ← FAN MOTOR CWA951396J CWA951329J SCREW - FAN MOTOR MOUNT CWH55406J ← PROPELLER FAN ASS’Y CWH03K1020 CWH03K1006...
  • Page 108 18.2.3 CU-C18MKV 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 109 REF. PART NAME & DESCRIPTION CU-C18MKV REMARK CHASSIS ASS’Y CWD50K2115 SOUND PROOF MATERIAL CWG302278 FAN MOTOR BRACKET CWD541065 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951401J SCREW - FAN MOTOR MOUNT CWH55252J PROPELLER FAN ASS’Y CWH03K1017 NUT - PROPELLER FAN CWH561038J COMPRESSOR 2KS252F5AA04...
  • Page 110 18.2.4 CU-C24MKV 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 111 18.2.5 CU-C28MKV 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 112 REF. PART NAME & DESCRIPTION CU-C24MKV CU-C28MKV REMARK CHASSIS ASS’Y CWD50K2100 ← SOUND PROOF MATERIAL CWG302230 FAN MOTOR BRACKET CWD541065 CWD541055 SCREW - FAN MOTOR BRACKET CWH551217 ← FAN MOTOR CWA951399J CWA951357J SCREW - FAN MOTOR MOUNT CWH55252J ← PROPELLER FAN ASS’Y CWH03K1017 ←...

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