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Panasonic CS-PC12MKF Service Manual
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Panasonic CS-PC12MKF Service Manual

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TABLE OF CONTENTS

1 Safety Precautions----------------------------------------------- 3
2 Specifications ----------------------------------------------------- 5
3 Features ------------------------------------------------------------- 9
4.1. Indoor Unit--------------------------------------------------10
4.2. Outdoor Unit -----------------------------------------------10
4.3. Remote Control -------------------------------------------10
Indoor Unit
CS-PC12MKF CU-PC12MKF
CS-PC18MKF CU-PC18MKF
CS-PC24MKF CU-PC24MKF
PAGE
5 Dimensions ------------------------------------------------------- 11
5.1. Indoor Unit ------------------------------------------------- 11
5.2. Outdoor Unit----------------------------------------------- 13
6 Refrigeration Cycle Diagram -------------------------------- 15
7 Block Diagram --------------------------------------------------- 16
7.1. CS-PC12MKF--------------------------------------------- 16
7.2. CS-PC18MKF CS-PC24MKF ------------------------ 17
© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2011.
Unauthorized copying and distribution is a violation of law.
Order No. PHAAM1101068C3
Air Conditioner
Outdoor Unit
PAGE

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  • Page 1: Table Of Contents

    4.1. Indoor Unit--------------------------------------------------10 7 Block Diagram --------------------------------------------------- 16 4.2. Outdoor Unit -----------------------------------------------10 7.1. CS-PC12MKF--------------------------------------------- 16 4.3. Remote Control -------------------------------------------10 7.2. CS-PC18MKF CS-PC24MKF ------------------------ 17 © Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2011. Unauthorized copying and distribution is a violation of law.
  • Page 2 8 Wiring Connection Diagram --------------------------------- 18 8.1. CS-PC12MKF CU-PC12MKF ------------------------ 18 8.2. CS-PC18MKF CU-PC18MKF ------------------------ 19 8.3. CS-PC24MKF CU-PC24MKF ------------------------ 20 9 Electronic Circuit Diagram----------------------------------- 21 9.1. CS-PC12MKF CU-PC12MKF ------------------------- 21 9.2. CS-PC18MKF CU-PC18MKF ------------------------- 22 9.3. CS-PC24MKF CU-PC24MKF ------------------------- 23 10 Printed Circuit Board ------------------------------------------ 24 10.1.

  • 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 21. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire. 22. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury. 23. Must not use other parts except original parts described in catalog and manual. 1.

  • Page 5: Specifications

    2 Specifications Indoor CS-PC12MKF Model Outdoor CU-PC12MKF Performance Test Condition AHAM Phase, Hz Single, 50 Power Supply 3.52 3.54 Capacity BTU/h 12000 12100 kJ/h 12670 12740 Running Current Input Power 1.21k 1.24k 2.91 2.85 BTU/hW Power Factor dB-A High: 40; Low: 30...
  • Page 6 Indoor CS-PC12MKF Model Outdoor CU-PC12MKF Height (I/D / O/D) mm (inch) 290 (11-7/16) 540 (21-9/32) Dimension Width (I/D / O/D) mm (inch) 870 (34-9/32) 780 (30-23/32) Depth (I/D / O/D) mm (inch) 204 (8-1/16) 289 (11-13/32) Weight Net (I/D / O/D)
  • Page 7 Indoor CS-PC18MKF CS-PC24MKF Model Outdoor CU-PC18MKF CU-PC24MKF Performance Test Condition AHAM AHAM Phase, Hz Single, 50 Single, 50 Power Supply 5.28 5.28 7.03 7.03 Capacity BTU/h 18000 18000 24000 24000 kJ/h 19010 19010 25310 25310 Running Current 10.0 12.4 12.3 Input Power 1.99k 2.05k...
  • Page 8 Indoor CS-PC18MKF CS-PC24MKF Model Outdoor CU-PC18MKF CU-PC24MKF Height (I/D / O/D) mm (inch) 290 (11-7/16) 540 (21-9/32) 290 (11-7/16) 695 (27-3/8) Dimension Width (I/D / O/D) mm (inch) 1070 (42-5/32) 780 (30-23/32) 1070 (42-5/32) 875 (34-15/32) Depth (I/D / O/D) mm (inch) 235 (9-9/32) 289 (11-13/32)

  • Page 9: Features

    3 Features • Long Installation Piping - Long piping up to 15 meter (PC12MKF) and 25 meter (PC18/24MKF). • Easy to use remote control • Quality Improvement - Random auto restart after power failure for safety restart operation - Gas leakage protection - Prevent compressor reverse cycle - Overload protector to protect Compressor - Noise prevention during soft dry operation...

  • Page 10: Location Of Controls And Components

    4 Location of Controls and Components 4.1. Indoor Unit 4.2. Outdoor Unit 4.3. Remote Control...

  • Page 11: Dimensions

    5 Dimensions 5.1. Indoor Unit 5.1.1. CS-PC12MKF...
  • Page 12 5.1.2. CS-PC18MKF CS-PC24MKF...

  • Page 13: Outdoor Unit

    5.2. Outdoor Unit 5.2.1. CU-PC12MKF CU-PC18MKF...
  • Page 14 5.2.2. CU-PC24MKF...

  • Page 15: Refrigeration Cycle Diagram

    6 Refrigeration Cycle Diagram...

  • Page 16: Block Diagram

    7 Block Diagram 7.1. CS-PC12MKF...

  • Page 17: Cs-Pc18Mkf Cs-Pc24Mkf

    7.2. CS-PC18MKF CS-PC24MKF...

  • Page 18: Wiring Connection Diagram

    8 Wiring Connection Diagram 8.1. CS-PC12MKF CU-PC12MKF Resistance of Indoor Fan Motor Windings Resistance of Compressor Windings MODEL CS-PC12MKF MODEL CU-PC12MKF CONNECTION CWA921434 CONNECTION 2KS210D5AA06 351.3 Ω 2.279 Ω BLUE-YELLOW C - R 343.9 Ω 3.526 Ω YELLOW-RED C - S Note: Resistance at 25°C of ambient temperature.

  • Page 19: Cs-Pc18Mkf Cu-Pc18Mkf

    8.2. CS-PC18MKF CU-PC18MKF Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-PC18MKF MODEL CU-PC18MKF CONNECTION CWA951676 CONNECTION 2KS324D5AB06 198 Ω 1.642 Ω BLUE-YELLOW C - R 293 Ω 4.316 Ω YELLOW-RED C - S Note: Resistance at 25°C of ambient temperature. Note: Resistance at 20°C of ambient temperature.

  • Page 20: Cs-Pc24Mkf Cu-Pc24Mkf

    8.3. CS-PC24MKF CU-PC24MKF Resistance of Outdoor Fan Motor Windings Resistance of Compressor Windings MODEL CU-PC24MKF MODEL CU-PC24MKF CONNECTION CWA951689 CONNECTION 2JS438D3CB04 64 Ω 1.121 Ω BLUE-YELLOW C - R 90 Ω 2.535 Ω YELLOW-ORANGE C - S 55 Ω YELLOW-RED Note: Resistance at 20°C of ambient temperature.

  • Page 21: Electronic Circuit Diagram

    9 Electronic Circuit Diagram 9.1. CS-PC12MKF CU-PC12MKF...

  • Page 22: Cs-Pc18Mkf Cu-Pc18Mkf

    9.2. CS-PC18MKF CU-PC18MKF...

  • Page 23: Cs-Pc24Mkf Cu-Pc24Mkf

    9.3. CS-PC24MKF CU-PC24MKF...

  • Page 24: Printed Circuit Board

    10 Printed Circuit Board 10.1. Indoor Unit 10.1.1. Main Printed Circuit Board 10.1.1.1. CS-PC12MKF...
  • Page 25 10.1.1.2. CS-PC18MKF CS-PC24MKF...

  • Page 26: Indicator Printed Circuit Board

    10.2. Indicator Printed Circuit Board 10.3. Receiver Printed Circuit Board 10.4. Comparator Printed Circuit Board 10.5. Human Activity Sensor Printed Circuit Board...

  • Page 27: Installation Instruction

    11 Installation Instruction 11.1. Select The Best Location 11.1.1. Indoor Unit 11.1.3. Indoor/Outdoor Unit Installation Diagram • 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 28: 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 it 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 is...
  • Page 29 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 botom piping also.)
  • Page 30 11.2.4. Connect the Cable to the Indoor Unit The power supply cord, indoor and outdoor and outdoor unit connection cable can be connected without removing the front grille. 1. Install the indoor unit on the installing holder that mounted on the wall, 2.
  • Page 31 7. Remove the tapes and connect the power supply cord and connecting cable between indoor unit and outdoor unit according to the diagram below. 8. Secure the power supply cord and connection cable onto the control board with the holder. 9.
  • Page 32 11.2.5. Wire Stripping And Connecting Requirement...

  • Page 33: 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. 1. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). 2. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
  • Page 34 FOR ENVIRONMENTAL PROTECTION, MANUFACTURER STRONGLY RECOMMENDS TO USE EVACUATION METHOD. 11.3.3. Evacuation Of The Equipment 1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve. •...
  • Page 35 11.3.4. Air Purging Of The Piping And Indoor The remaining air in the Refrigeration cycle which contains moisture may cause malfunction on the compressor. 1. Remove the caps from the 2-way and 3-way valves. 2. Remove the service-port cap from the 3-way valves. 3.
  • Page 36 11.3.6. Pipe Insulation 1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping. 2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 6mm or above.

  • Page 37: Operation And Control

    12 Operation and Control 12.1. Cooling Operation • Cooling operation can be set using remote control. • This operation is applied to cool down 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 38: Soft Dry Operation

    12.1.2. Cooling Operation Time Diagram (For PC18MKF, PC24MKF) 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 -1.5°C from the setting temperature on the remote control. •...
  • Page 39 12.2.1. Soft Dry Operation Time Diagram (For PC12MKF) 12.2.2. Soft Dry Operation Time Diagram (For PC18MKF, PC24MKF)

  • Page 40: 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 41: 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 Speed Fan Speed (rpm) CS-PC12MKF CS-PC18MKF CS-PC24MKF 1120 1280 1390 1200 1240 H Lo 1180 1210 C Lo 1120 1150 S Lo 12.4.2.

  • Page 42: Outdoor Fan Speed Control

    • Auto Fan Speed during Soft Dry operation: 1. Indoor fan will rotate alternately between off and Lo-. 2. At the beginning of each compressor start operation, indoor fan will increase fan speed gradually for deodorizing purpose. 3. When compressor at turn off condition for 6 minutes, indoor fan will start fan speed at Lo- to circulate the air in the room. This is to obtain the actual reading of intake air temperature.

  • Page 43: Vertical Airflow Direction Control

    12.6. Vertical Airflow Direction Control 12.6.1. Auto Control • When the vertical airflow direction is set to Auto using the remote control, the louver swings up and down as shown in the diagram. • When stop operation using the remote control, the discharge vent is reset, and stop at the closing position. •...

  • Page 44: Random Auto Restart Control

    12.9. Random Auto Restart Control • If there is a power failure during operation, the air conditioner will automatically restart after 3 to 4 minutes when the power is resumed. • It will start with previous operation mode and airflow direction. •...

  • Page 45: Econavi & Auto Comfort Operation

    12.11. ECONAVI & AUTO COMFORT 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 46 • ECONAVI & AUTO COMFORT Demo Mode - 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 “EC demo”. - Press “Timer Set” button to toggle ECONAVI & AUTO COMFORT Demo mode. - Short "beep": Turn ON ECONAVI &...
  • Page 47 • AUTO COMFORT Stop condition. - Press AUTO COMFORT button again. - OFF Timer activates. - Press OFF/ON button to turn off the air conditioner. - Press AUTO OFF/ON button to turn off the air conditioner. • ECONAVI & AUTO COMFORT operation could ON when any of the following conditions is fulfilled: - During forced cooling or forced heating operation.
  • Page 48 • ECONAVI & AUTO COMFORT 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 • Not in ECONAVI & AUTO COMFORT Demo mode. •...

  • Page 49: 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 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 50: Compressor Reverse Rotation Protection Control

    • (For PC12MKF only) The current fan speed will change to freeze prevention speed after 70 seconds compressor on. The fan speed will be increased according to the indoor pipe temperature the figure below. 13.6. Compressor Reverse Rotation Protection Control •...

  • Page 51: Servicing Mode

    14 Servicing Mode 14.1. Auto OFF/ON Button 1. AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunctioned. 2.

  • Page 52: Remote Control Button

    14.2. Remote Control Button 14.2.1. SET BUTTON • To check remote control transmission code and store the transmission code to EEPROM. - Press “SET” button for more than 10 seconds by using pointer. - Press “TIMER SET” button until a “beep” sound is heard as confirmation of transmission code change. 14.2.2.

  • Page 53: Troubleshooting Guide

    15 Troubleshooting Guide 15.1. Refrigeration cycle system In order to diagnose malfunctions, ensure the air conditioner is free from electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan. The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table to the right.
  • Page 54 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 55: 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-PC12MKF 16.1.1. Indoor Electronic Controllers and Control Board Removal Procedures 16.1.1.1.
  • Page 56 16.1.1.3. To remove Discharge Grille...
  • Page 57 16.1.1.4. To remove Control Board 16.1.1.5. To remove Cross Flow Fan and Indoor Fan Motor...

  • Page 59: Cs-Pc18Mkf Cs-Pc24Mkf

    16.2. CS-PC18MKF CS-PC24MKF 16.2.1. Indoor Electronic Controllers and Control Board Removal Procedures 16.2.1.1. To remove Front Grille 16.2.1.2. To remove Electronic Controller...
  • Page 60 16.2.1.3. To remove Discharge Grille...
  • Page 61 16.2.1.4. To remove Control Board 16.2.1.5. To remove Cross Flow Fan and Indoor Fan Motor...

  • Page 63: Technical Data

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

  • Page 64: Operation Characteristics

    17.2. Operation Characteristics 17.2.1. CS-PC12MKF CU-PC12MKF • Cooling Characteristics [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Cooling condition: At High fan Piping length: 7.5m...
  • Page 65 • Piping Length Characteristics [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Cooling condition: At High fan Piping length: 7.5m...
  • Page 66 17.2.2. CS-PC18MKF CU-PC18MKF • Cooling Characteristics [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Cooling condition: At High fan Piping length: 5.0m...
  • Page 67 • Piping Length Characteristic [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Cooling condition: At High fan Piping length: 5.0m...
  • Page 68 17.2.3. CS-PC24MKF CU-PC24MKF • Cooling Characteristics [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Cooling condition: At High fan Piping length: 5.0m...
  • Page 69 • Piping Length Characteristic [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Cooling condition: At High fan Piping length: 5.0m...

  • Page 70: Fan Performance

    17.3. Fan Performance CS-PC12MKF CU-PC12MKF Fan Speed 1120 10.30 8.30 6.80 Indoor /min Air Flow Fan Speed 875 - 905 33.2 - 34.2 Outdoor /min Air Flow 1172 - 1207 CS-PC18MKF CU-PC18MKF Fan Speed 1280 1200 1120 16.90 15.60 14.30...

  • Page 71: Cooling Capacity Performance Data

    17.4. Cooling Capacity Performance Data CS/CU-PC12MKF (220V)
  • Page 72 CS/CU-PC12MKF (240V) CS/CU-PC18MKF (220V)
  • Page 73 CS/CU-PC18MKF (240V)
  • Page 74 CS/CU-PC24MKF (220V)
  • Page 75 CS/CU-PC24MKF (240V)

  • Page 76: Sound Data

    17.5. Sound Data CS-PC18MKF...
  • Page 77 CS-PC24MKF...

  • Page 78: Exploded View And Replacement Parts List

    18 Exploded View and Replacement Parts List 18.1. Indoor Unit 18.1.1. CS-PC12MKF 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 79 REF. NO. PART NAME & DESCRIPTION QTY. CS-PC12MKF REMARK CHASSIS COMPLETE CWD50C1653 FAN MOTOR CWA921434 CROSS FLOW FAN COMPLETE CWH02C1076 BEARING ASS’Y CWH64K007 SCREW - CROSS FLOW FAN CWH551146 EVAPORATOR CWB30C3328 FLARE NUT (LIQUID) CWT251026 FLARE NUT (GAS) CWT251062 HOLDER SENSOR...
  • Page 80 18.1.2. CS-PC18MKF CS-PC24MKF 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 81 REF. NO. PART NAME & DESCRIPTION QTY. CS-PC18MKF CS-PC24MKF REMARK ← CHASSIS COMPLETE CWD50C1654 FAN MOTOR ARW7628AC ARW7627AC ← CROSS FLOW FAN COMPLETE CWH02C1077 ← BEARING ASS’Y CWH64K007 ← SCREW - CROSS FLOW FAN CWH551146 EVAPORATOR CWB30C3126 CWB30C3125 ← FLARE NUT (LIQUID) CWT251026 FLARE NUT (GAS) CWT251062...

  • Page 82: Outdoor Unit

    18.2. Outdoor Unit 18.2.1. CU-PC12MKF 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 83 REF. NO. PART NAME & DESCRIPTION QTY. CU-PC12MKF REMARK CHASSIS ASS’Y CWD50K2088 SOUND PROOF MATERIAL CWG302110 FAN MOTOR BRACKET CWD541030 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951676 SCREW - FAN MOTOR MOUNT CWH55406J PROPELLER FAN ASS’Y CWH03K1006 NUT - PROPELLER FAN CWH56053J COMPRESSOR 2KS210D5AA06...
  • Page 84 18.2.2. CU-PC18MKF 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 85 REF. NO. PART NAME & DESCRIPTION QTY. CU-PC18MKF REMARK CHASSIS ASS’Y CWD50K2088 FAN MOTOR BRACKET CWD541030B SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951676 SCREW - FAN MOTOR MOUNT CWH55406J PROPELLER FAN ASS’Y CWH03K1006 NUT - PROPELLER FAN CWH56053J COMPRESSOR 2KS324D5AB06 ANTI - VIBRATION BUSHING...
  • Page 86 18.2.3. CU-PC24MKF 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 87 REF. NO. PART NAME & DESCRIPTION QTY. CU-PC24MKF REMARK CHASSIS ASS’Y CWD52K1248 SOUND PROOF MATERIAL CWG302221 FAN MOTOR BRACKET CWD541154 SCREW - FAN MOTOR BRACKET CWH551217 FAN MOTOR CWA951689 SCREW - FAN MOTOR MOUNT CWH55252J PROPELLER FAN ASS’Y CWH03K1017 NUT - PROPELLER FAN CWH561038J COMPRESSOR 2JS438D3CB04...

This manual is also suitable for:

Cs-pc18mkfCs-pc24mkfCu-pc12mkfCu-pc18mkfCu-pc24mkf

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