Panasonic CU-4E27PBD Service Manual
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Panasonic CU-4E27PBD Service Manual

Panasonic CU-4E27PBD Service Manual

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Please file and use this manual together with the service manual for Model No. CS-E7PKDW CS-E9PKDW CS-E12PKDW
CS-E15PKDW CS-E18PKDW CS-E24PKDW CS-E10JD3EA CS-E15JD3EA CS-E18JD3EA CS-E10HB4EA CS-E15HB4EA
CS-E18HB4EA CS-ME10DTEG CS-E15DTEW CS-E18DTEW CS-E21JB4EA, Order No. PAPAMY1302030CE PHAAM0901093C8
MAC0803024C8 RAC0503011C2 RAC0602011C2 PHAAM0901079C8
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 product or products dealt with in this service information by anyone else could result in serious injury or death.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
WARNING
PRECAUTION OF LOW TEMPERATURE
Order No: PAPAMY1304104CE
Air Conditioner
Outdoor Unit
CU-4E27PBD
CU-5E34PBD
Destination
Russia
Ukraine
Belarus
Kazakhstan
Hong Kong
© Panasonic Corporation 2013

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Summary of Contents for Panasonic CU-4E27PBD

  • Page 1 PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit. © Panasonic Corporation 2013...

  • Page 2: Table Of Contents

    1. Safety Precautions ..........3 (Restart Control) .........36 2. Specifications ............. 5 13.10 30 seconds Force Operation ......36 13.11 Total Current Control ........36 CU-4E27PBD ..........5 13.12 IPM (power transistor) Protection CU-5E34PBD ..........7 Control ............36 3. Dimensions ............13 13.13 Compressor Protection Control...

  • 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 18. For R410A models, when connecting the piping, do not use any existing (R22) pipes and flare nuts. Using such same may cause abnormally high pressure in the refrigeration cycle (piping), and possibly result in explosion and injury. Use only R410A materials.

  • Page 5: Specifications

    2. Specifications CU-4E27PBD Item Unit OUTDOOR UNIT Indoor Unit Combination 2.2kW + 2.2kW + 2.2kW + 7.0kW Power Source 1 Phase, 230V, 50Hz (Power supply from outdoor unit) 8.0 (3.0 ~ 9.2) Capacity BTU/h 27300 (10200 ~ 31400) Running Current...
  • Page 6 Item Unit OUTDOOR UNIT Dry Bulb Wet Bulb Maximum °C Cooling Minimum °C Indoor Operation Range Maximum °C — Heating Minimum °C — Maximum °C Cooling Minimum °C — Outdoor Operation Range Maximum °C Heating Minimum °C Note Specifications are subject to change without notice for further improvement.

  • Page 7: Cu-5E34Pbd

    CU-5E34PBD Item Unit OUTDOOR UNIT Indoor Unit Combination 2.2kW + 2.2kW + 2.8kW + 3.2kW + 7.0kW Power Source 1 Phase, 230V, 50Hz (Power supply from outdoor unit) 10.0 (2.9 ~ 11.5) Capacity BTU/h 34100 (9890 ~ 39200) Running Current 13.2 Electrical Cooling Operation...
  • Page 8 Item Unit OUTDOOR UNIT Dry Bulb Wet Bulb Maximum °C Cooling Minimum °C Indoor Operation Range Maximum °C — Heating Minimum °C — Maximum °C Cooling Minimum °C — Outdoor Operation Range Maximum °C Heating Minimum °C Note Specifications are subject to change without notice for further improvement.
  • Page 9 Multi Split Combination Possibility: A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E27PBD. A single outdoor unit enables air conditioning of up to five separate rooms for CU-5E34PBD.
  • Page 10 Indoor Unit : CS-E7/9/12/15/18/24PKDW, CS-E10/15/18JD3EA, CS-E10/15/18HB4EA, CS-ME10DTEG, CS-E15/18DTEW, CS-E21JB4EA Outdoor Unit : CU-4E27PBD 4 Room 3 Room 2 Room 1 Room Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Capacity (kW) Capacity (kW)
  • Page 11 Indoor Unit : CS-E7/9/12/15/18/24PKDW, CS-E10/15/18JD3EA, CS-E10/15/18HB4EA, CS-ME10DTEG, CS-E15/18DTEW, CS-E21JB4EA Outdoor Unit : CU-5E34PBD 5 Room 4 Room 3 Room 2 Room 1 Room Total Indoor Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Capacity Indoor Unit Capacity Capacity...
  • Page 12 5 Room 4 Room 3 Room 2 Room 1 Room Total Indoor Total Indoor Indoor Unit Indoor Unit Total Indoor Indoor Unit Total Indoor Indoor Unit Indoor Unit Capacity Indoor Unit Capacity Capacity Capacity Capacity Capacity Capacity Capacity Capacity (kW) Capacity (kW) (kW) (kW)

  • Page 13: Dimensions

    3. Dimensions...

  • Page 14: Refrigeration Cycle Diagram

    4. Refrigeration Cycle Diagram CU-4E27PBD...

  • Page 15: Cu-5E34Pbd

    CU-5E34PBD...

  • Page 16: Block Diagram

    5. Block Diagram CU-4E27PBD...

  • Page 17: Cu-5E34Pbd

    CU-5E34PBD...

  • Page 18: Wiring Connection Diagram

    6. Wiring Connection Diagram CU-4E27PBD...

  • Page 19: Cu-5E34Pbd

    CU-5E34PBD...

  • Page 20: Electronic Circuit Diagram

    7. Electronic Circuit Diagram CU-4E27PBD...

  • Page 21: Cu-5E34Pbd

    CU-5E34PBD...

  • Page 22: Printed Circuit Board

    8. Printed Circuit Board Main Printed Circuit Board...

  • Page 23: Noise Filter Printed Circuit Board

    Noise Filter Printed Circuit Board Display Printed Circuit Board...

  • Page 24: Installation Information

    9. Installation Information CU-4E27PBD 9.1.1 Check Points...

  • Page 25: Cu-5E34Pbd

    CU-5E34PBD 9.2.1 Check Points...

  • Page 26: Installation Instruction

    10. Installation Instruction 10.1 Select The Best Location If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed. There should not be any animal or plant which could be affected by hot air discharged.

  • Page 27: Install The Outdoor Unit

    Outdoor Unit Installation Guidelines Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the installation guidelines below. For any of the below installation patterns, the wall height on the exhaust side should be 1200mm or less. 10.2 Install The Outdoor Unit After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram.

  • Page 28: Evacuation Of The Equipment

    CUTTING AND FLARING THE PIPING 1. Please cut using pipe cutter and then remove the burrs. 2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. 3.

  • Page 29: Connect The Cable To The Outdoor Unit

    10.5 Connect The Cable To The Outdoor Unit 1. Remove the particular plate from the unit by 4. Connect the power supply cord and loosening two screws. connection cable between indoor unit and 2. Cable connection to the power supply through outdoor unit according to the diagram as isolating Devices (Disconnecting means).

  • Page 30: Heat Insulation

    5. For wire stripping and connection requirement, refer to the diagram below. 6. Secure the power supply cord and connecting cables onto the control board with the holder. 7. Attach the control board cover back to the original position with screw. 10.6 Heat Insulation Use a material with good heat-resistant properties as the heat insulation for the Material shall...

  • Page 31: Operation Control

    11. Operation Control 11.1 Cooling Operation 11.1.1 Outdoor fan control When cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure below: 11.1.2 Annual Cooling control This control is to enable cooling operation when outdoor ambient temperature is low. Control start conditions: Cooling operation is activated with compressor ON.

  • Page 32: Heating Operation

    11.2 Heating Operation 11.2.1 Outdoor fan control When heating operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure below for Heating overload control: 11.2.2 Heating Room Temp Sampling Control To improve the judgment accuracy, indoor room temperature sampling starts when any indoor unit has stopped capability supplied (heating thermo-off) during heating operation with compressor ON, outdoor unit will send signal to all thermo-off indoor units to ON fan motor and get room temperature sample.

  • Page 33: Simultaneous Operation Control

    12. Simultaneous Operation Control Operation modes which can be selected using the remote control unit: Automatic, Cooling, Dry, Heating and e-ion operation mode. Types of operation modes which can be performed simultaneously Cooling operation and Cooling, Dry or e-ion operation. Heating operation and Heating operation.

  • Page 34: Protection Control

    13. Protection Control 13.1 Freeze Prevention Control (Cool) When received freeze prevention signal from indoor unit, the compressor frequency changes according to indoor heat exchanger temperature. When indoor unit request capability OFF due to freeze condition, immediately the capability supply to targeted indoor unit stops.

  • Page 35: Cooling Overload Control (Cool)

    13.5 Cooling Overload Control (Cool) This control detect outdoor pipe temperature and perform the compressor frequency restriction during cooling operation. 13.6 Heating Overload Control (Heat) This control detect indoor pipe temperature and perform the compressor frequency restriction during heating operation. This control detect outdoor ambient temperature and perform the fan speed adjustment during heating operation.

  • Page 36: Deice Control

    If the running current does not exceed X value for 5 seconds, compressor frequency will increase. However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes. CU-4E27PBD CU-5E34PBD Operation Mode X (A)

  • Page 37: Compressor Protection Control (Gas Leak Detection Control 1)

    13.13 Compressor Protection Control (Gas leak detection control 1) Control start conditions For 5 minutes, the compressor continuously operates and total current is low. During Cooling or Soft Dry operation: Indoor intake temperature — indoor piping temperature is below 4°C. During Heating operation: Indoor pipe temperature —...

  • Page 38: Servicing Mode

    14. Servicing Mode 14.1.1 Pump Down Operation (SW1) Operate the pump down process according to the following procedure. Confirm the valve on the liquid side and gas side are open. Press PUMP DOWN button (SW1) on the Service PCB inside the outdoor unit for more than 5 seconds. Pump down (cooling) operation is performed for 15 minutes.

  • Page 39: Wiring Error Check

    14.1.3 Wiring Error Check The unit capable to correct the wiring error automatically by following procedures. Confirm the valve on the liquid side and gas side is open. Press WIRING CHECK button (SW3) on the Service PCB inside the outdoor unit for more than 10 seconds to start wiring check operation.

  • Page 40: Troubleshooting Guide

    15. Troubleshooting Guide 15.1 Self Diagnosis Function The display screen of wireless remote control unit and the self-diagnosis LEDs (green) on the outdoor printed circuit board in the outdoor unit can be used to identify the location of the problem. Refer to the table below to identify and solve the cause of the problem, and then re-start the air conditioner system.

  • Page 43: Disassembly And Assembly Instructions

    16. Disassembly and Assembly Instructions WARNING High voltages are 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 Outdoor Unit Removal Procedure Caution! When handling electronic controller, be careful of electrostatic discharge.
  • Page 44 3. Remove the particular plate (remove the 3 screws). Fig. 3 4. Remove the particular plate (remove the 8 screws). Fig. 4 16.1.3 Removing the Cabinet Front Plate 5. Remove the cabinet front plate (remove the 7 screws). Fig. 5...
  • Page 45 16.1.4 Removing the Control P.C. Board 6. Remove the cover by release the screw. Fig. 6 7. Disconnect the connectors (lead wires of the compressor, sensors, and others). 8. Release the Control P.C. Board tab to remove the Control P.C. Board. Fig.

  • Page 46: Technical Data

    17. Technical Data 17.1 Operation Characteristics Cooling Characteristic [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz A) Indoor unit capacity: Cooling (2.2: CS-E7PKDW) 13.000 12.500 12.000 11.500 11.000 10.500 10.000 9.500 9.000 8.500 Outdoor Air Temperature (°C)
  • Page 47 Cooling Characteristic [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz B) Indoor unit capacity: Cooling (2.8: CS-E9PKDW) 13.000 12.500 12.000 11.500 11.000 10.500 10.000 9.500 9.000 Outdoor Air Temperature (°C) 4.000 3.800 3.600 3.400...
  • Page 48 Cooling Characteristic [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz C) Indoor unit capacity: Cooling (3.2: CS-E12PKDW) 13.500 13.000 12.500 12.000 11.500 11.000 10.500 10.000 9.500 9.000 Outdoor Air Temperature (°C) 4.400 4.200 4.000...
  • Page 49 Cooling Characteristic [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz D) Indoor unit capacity: Cooling (4.0: CS-E15PKDW) 13.500 13.000 12.500 12.000 11.500 11.000 10.500 10.000 9.500 9.000 Outdoor Air Temperature (°C) 4.400 4.200 4.000...
  • Page 50 Cooling Characteristic [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz E) Indoor unit capacity: Cooling (5.0: CS-E18PKDW) 13.500 13.000 12.500 12.000 11.500 11.000 10.500 10.000 9.500 9.000 Outdoor Air Temperature (°C) 5.500 5.000 4.500...
  • Page 51 Cooling Characteristic [Condition] Room temperature: 27°C (DBT), 19°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz F) Indoor unit capacity: Cooling (7.0: CS-E24PKDW) 13.500 13.000 12.500 12.000 11.500 11.000 10.500 10.000 9.500 9.000 Outdoor Air Temperature (°C) 7.500 7.000 6.500...
  • Page 52 Heating Characteristic [Condition] Room temperature: 20°C (DBT), 12°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz A) Indoor unit capacity: Heating (2.2: CS-E7PKDW) 44.000 42.000 40.000 38.000 36.000 34.000 32.000 30.000 28.000 Outdoor Air Temperature (°C) 4.000 3.500 3.000 2.500...
  • Page 53 Heating Characteristic [Condition] Room temperature: 20°C (DBT), 12°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz B) Indoor unit capacity: Heating (2.8: CS-E9PKDW) 45.000 43.000 41.000 39.000 37.000 35.000 33.000 31.000 29.000 Outdoor Air Temperature (°C) 5.000 4.500 4.000 3.500...
  • Page 54 Heating Characteristic [Condition] Room temperature: 20°C (DBT), 12°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz C) Indoor unit capacity: Heating (3.2: CS-E12PKDW) 54.000 52.000 50.000 48.000 46.000 44.000 42.000 40.000 38.000 36.000 34.000 Outdoor Air Temperature (°C) 5.500 5.000 4.500...
  • Page 55 Heating Characteristic [Condition] Room temperature: 20°C (DBT), 12°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz D) Indoor unit capacity: Heating (4.0: CS-E15PKDW) 54.000 52.000 50.000 48.000 46.000 44.000 42.000 40.000 38.000 36.000 34.000 Outdoor Air Temperature (°C) 6.000 5.000 4.000...
  • Page 56 Heating Characteristic [Condition] Room temperature: 20°C (DBT), 12°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz E) Indoor unit capacity: Heating (5.0: CS-E18PKDW) 54.000 52.000 50.000 48.000 46.000 44.000 42.000 40.000 38.000 36.000 34.000 Outdoor Air Temperature (°C) 7.000 6.500 6.000...
  • Page 57 Heating Characteristic [Condition] Room temperature: 20°C (DBT), 12°C (WBT) Operation condition: High fan speed Piping Length: 5m 230V 50Hz F) Indoor unit capacity: Heating (7.0: CS-E24PKDW) 54.000 52.000 50.000 48.000 46.000 44.000 42.000 40.000 38.000 36.000 34.000 Outdoor Air Temperature (°C) 9.000 8.000 7.000...

  • Page 58: Exploded View And Replacement Parts List

    18. Exploded View and Replacement Parts List 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 59 SAFETY REF.NO. DESCRIPTION & NAME QTY. CU-4E27PBD CU-5E34PBD REMARK CHASSIS ASSY CWD52K1345A ← SOUND PROOF BOARD CWH151367 ← FAN MOTOR BRACKET CWD54K1081 ← SCREW-BRACKET FAN MOTOR CWH551217 ← CONDENSER COMPLETE CWB32C3794 ← FAN MOTOR L6CBYYYL0098 ← SCREW-FAN MOTOR MOUNT CWH551323 ←...
  • Page 60 SAFETY REF.NO. DESCRIPTION & NAME QTY. CU-4E27PBD CU-5E34PBD REMARK INSTALLATION INSTRUCTION CWF615847 ← INSTALLATION INSTRUCTION CWF615889 ← INSTALLATION INSTRUCTION CWF615890 ← INSTALLATION INSTRUCTION CWF615891 ← OPERATING INSTRUCTION CWF569016 ← OPERATING INSTRUCTION CWF569017 ← ACCESSORY CO. (DRAIN ELBOW) CWG87C900 ← TUBE ASS’Y (LIQUID SIDE)

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