Panasonic CU-2E15PBE Service Manual
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Panasonic CU-2E15PBE Service Manual

Outdoor unit
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Please file and use this manual together with the service manual for Model No. CS-ME5PKE CS-E7PKEW CS-E9PKEW
CS-E12PKEW CS-E15PKEW CS-E18PKEW CS-E21PKEW CS-XE7PKEW CS-XE9PKEW CS-XE12PKEW CS-XE15PKEW
CS-XE18PKEW
CS-XE21PKEW
CS-ME18PB4EA CS-ME21PB4EA CS-E9GFEW CS-E12GFEW CS-E18GFEW CS-E9GFEW-2 CS-E12GFEW-2 CS-E18GFEW-2,
Order No. PAPAMY1301090CE PAPAMY1212045CE PAPAMY1301096CE PAPAMY1301095CE RAC0704001C2 MAC0804027A2
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.
CS-ME9PD3EA
CS-ME12PD3EA
WARNING
PRECAUTION OF LOW TEMPERATURE

Air Conditioner

CS-ME18PD3EA
CS-ME9PB4EA
© Panasonic Corporation 2013
Order No: PAPAMY1301048CE

Outdoor Unit

CU-2E15PBE
CU-2E18PBE
CU-3E18PBE
CU-4E23PBE
Destination
Europe
CS-ME12PB4EA

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Summary of Contents for Panasonic CU-2E15PBE

  • Page 1: Air Conditioner

    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

    13.9 Time Delay Safety Control 3. Dimensions ............18 (Restart Control) .........54 13.10 30 seconds Force Operation ......54 CU-2E15PBE CU-2E18PBE ..... 18 13.11 Total Current Control ........54 CU-3E18PBE CU-4E23PBE ..... 18 13.12 IPM (power transistor) Protection 4. Refrigeration Cycle Diagram ......19 Control ............54...

  • 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-2E15PBE Item Unit OUTDOOR UNIT Indoor Unit Combination 2.0kW + 2.5kW Power Source 1 Phase, 230V, 50Hz (Power supply from outdoor unit) 4.5 (1.5 ~ 5.2) Capacity BTU/h 15300 (5120 ~ 17700) Running Current 5.75 Electrical Cooling Operation Power Input 1.23 (0.25 ~ 1.52)
  • 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-2E18Pbe

    CU-2E18PBE Item Unit OUTDOOR UNIT Indoor Unit Combination 2.0kW + 3.2kW Power Source 1 Phase, 230V, 50Hz (Power supply from outdoor unit) 5.2 (1.5 ~ 5.4) Capacity BTU/h 17700 (5120 ~ 18400) Running Current 7.10 Electrical Cooling Operation Power Input 1.52 (0.25 ~ 1.58) Data 3.42 (6.00 ~ 3.42)
  • 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: Cu-3E18Pbe

    CU-3E18PBE Item Unit OUTDOOR UNIT Indoor Unit Combination 1.6kW + 1.6kW + 2.0kW Power Source 1 Phase, 230V, 50Hz (Power supply from outdoor unit) 5.2 (1.8 ~ 7.3) Capacity BTU/h 17700 (6140 ~ 24900) Running Current Electrical Cooling Operation Power Input 1.20 (0.36 ~ 2.18) Data 4.33 (5.00 ~ 3.35)
  • Page 10 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 11: Cu-4E23Pbe

    CU-4E23PBE Item Unit OUTDOOR UNIT Indoor Unit Combination 1.6kW + 1.6kW + 1.6kW + 2.0kW Power Source 1 Phase, 230V, 50Hz (Power supply from outdoor unit) 6.8 (1.9 ~ 8.8) Capacity BTU/h 23200 (6480 ~ 30000) Running Current Electrical Cooling Operation Power Input 1.68 (0.34 ~ 2.47) Data...
  • Page 12 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 13 Multi Split Combination Possibility: A single outdoor unit enables air conditioning of up to two separate rooms for CU-2E15PBE, CU-2E18PBE. A single outdoor unit enables air conditioning of up to three separate rooms for CU-3E18PBE. A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E23PBE.
  • Page 14 Indoor Unit : CS-ME5PKE, CS-E7/9/12PKEW, CS-E9/12GFEW, CS-ME9/12PB4EA, CS-ME9/12PD3EA Outdoor Unit : CU-2E15PBE 2 Room 1 Room Indoor Unit Capacity (kW) Total Indoor Capacity (kW) Indoor Unit Capacity (kW) Total Indoor Capacity (kW) 16 + 16 16 + 20 16 + 25...
  • Page 15 Indoor Unit : CS-ME5PKE, CS-E7/9/12/15/18PKEW, CS-E9/12/18GFEW, CS-ME9/12/18PB4EA, CS-ME9/12/18PD3EA Outdoor Unit : CU-3E18PBE 3 Room 2 Room 1 Room Indoor Unit Capacity Total Indoor Capacity Indoor Unit Capacity Total Indoor Capacity Indoor Unit Capacity Total Indoor Capacity (kW) (kW) (kW) (kW) (kW) (kW) 16 + 16 + 16...
  • Page 16 Indoor Unit : CS-ME5PKE, CS-E7/9/12/15/18/21PKEW, CS-E9/12/18GFEW, CS-ME9/12/18/21PB4EA, CS-ME9/12/18PD3EA Outdoor Unit : CU-4E23PBE 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) Capacity (kW) Capacity (kW) Capacity (kW)
  • Page 17 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) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) Capacity (kW) 20 + 20 + 25 + 28 25 + 25 + 40 20 + 20 + 25 + 32...

  • Page 18: Dimensions

    3. Dimensions CU-2E15PBE CU-2E18PBE CU-3E18PBE CU-4E23PBE...

  • Page 19: Refrigeration Cycle Diagram

    4. Refrigeration Cycle Diagram CU-2E15PBE CU-2E18PBE...

  • Page 20: Cu-3E18Pbe

    CU-3E18PBE...

  • Page 21: Cu-4E23Pbe

    CU-4E23PBE...

  • Page 22: Block Diagram

    5. Block Diagram CU-2E15PBE CU-2E18PBE...

  • Page 23: Cu-3E18Pbe

    CU-3E18PBE...

  • Page 24: Cu-4E23Pbe

    CU-4E23PBE...

  • Page 25: Wiring Connection Diagram

    6. Wiring Connection Diagram CU-2E15PBE CU-2E18PBE...

  • Page 26: Cu-3E18Pbe

    CU-3E18PBE...

  • Page 27: Cu-4E23Pbe

    CU-4E23PBE...

  • Page 28: Electronic Circuit Diagram

    7. Electronic Circuit Diagram CU-2E15PBE CU-2E18PBE...

  • Page 29: Cu-3E18Pbe

    CU-3E18PBE...

  • Page 30: Cu-4E23Pbe

    CU-4E23PBE...

  • Page 31: Printed Circuit Board

    8. Printed Circuit Board Main Printed Circuit Board 8.1.1 CU-2E15PBE CU-2E18PBE...
  • Page 32 8.1.2 CU-3E18PBE CU-4E23PBE...

  • Page 33: Noise Filter Printed Circuit Board

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

  • Page 34: Cpu Printed Circuit Board

    CPU Printed Circuit Board...

  • Page 35: Installation Information

    9. Installation Information CU-2E15PBE 9.1.1 Check Points 9.1.2 The Shapes of the 3-Way Valve Caps of the Outdoor Unit Have Been Changed Accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed.

  • Page 36: Cu-2E18Pbe

    CU-2E18PBE 9.2.1 Check Points 9.2.2 The Shapes of the 3-Way Valve Caps of the Outdoor Unit Have Been Changed Accompanying the changes in the shapes of the 3-way valve caps, the tightening method has also been changed. Firmly tighten the 3-way valve caps by hand, and then tighten them up by another 30 degrees or so (one-twelfth of a full turn) using a spanner or adjustable spanner.

  • Page 37: Cu-3E18Pbe

    CU-3E18PBE 9.3.1 Check Points...

  • Page 38: Cu-4E23Pbe

    CU-4E23PBE 9.4.1 Check Points...

  • Page 39: Installation Instruction

    10. Installation Instruction 10.1 CU-2E15PBE CU-2E18PBE 10.1.1 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 40: Connect The Piping

    10.1.4 Connect the Piping Connecting The Piping To Indoor Unit Please make flare after inserting flare nut (locate at Do not over tighten, over tightening may cause gas leakage. joint portion of tube assembly) onto the copper Piping size Torque pipe.

  • Page 41: Connect The Cable To The Outdoor Unit

    2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump adaptor. 3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa).

  • Page 42: Piping Insulation

    10.1.7 Piping 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 43: Cu-3E18Pbe Cu-4E23Pbe

    10.2 CU-3E18PBE CU-4E23PBE 10.2.1 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 44: 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. 10.2.2 Install The Outdoor Unit After selecting the best location, start installation...
  • Page 45 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 46 10.2.5 Connect The Cable To The Outdoor Unit 1. Remove the control board cover metal from 4. Connect the power supply cord and the unit by loosening two screws. connecting 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 47: Heat Insulation

    10.2.6 Heat Insulation Use a material with good heat-resistant properties as the heat insulation for the Material shall Liquid-side pipes pipes. Be sure to insulate both the gas-side and liquid-side pipes. If the pipes are withstand Gas-side pipes not adequately insulated, condensation or water leakages may occur. 120°C or higher...

  • Page 48: 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 49: 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 50 Control Contents Compressor frequency and outdoor fan speed maximum limit is set. Adjust accordingly. Compressor frequency Outdoor fan speed Cool/Quiet #30 Hz #400 rpm Cancel Condition Indoor fan speed is equal or higher than Lo fan. > 1 operation indoor unit. In any cooling overload zone.

  • Page 51: 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 52: 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 53: 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 54: 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-4E23PBE CU-3E18PBE CU-2E18PBE CU-2E15PBE Operation Mode X (A) Y (A) X (A) Y (A)

  • Page 55: 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 56: Servicing Mode

    14. Servicing Mode 14.1 CU-3E18PBE & CU-4E23PBE 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 57: 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 58: Cu-2E15Pbe & Cu-2E18Pbe

    14.2 CU-2E15PBE & CU-2E18PBE 14.2.1 Pump down operation Operate the pump down process according to the following procedure Confirm the valve on the liquid side and gas side are open. Short the CN-PUMP button on the Service PCB inside the outdoor unit for more than 5 seconds. Pump down (cooling) operation is performed for 15 minutes.

  • Page 59: Troubleshooting Guide

    15. Troubleshooting Guide 15.1 Self Diagnosis Function (CU-2E15PBE and CU-2E18PBE)

  • Page 61: Self Diagnosis Function (Cu-3E18Pbe And Cu-4E23Pbe)

    15.2 Self Diagnosis Function (CU-3E18PBE and CU-4E23PBE) 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 64: Disassembly And Assembly Instructions

    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 (CU-2E15PBE CU-2E18PBE) Caution! When handling electronic controller, be careful of electrostatic discharge.

  • Page 65: Outdoor Unit Removal Procedure (Cu-3E18Pbe Cu-4E23Pbe)

    16.1.4 Removing the Propeller Fan and Fan Motor 1. Remove the cabinet top plate and cabinet front plate. 2. Remove the propeller fan by removing the nut turning clockwise at its center. 3. Disconnect the connector of the fan motor from the control board.
  • Page 66 16.2.2 Remove the Control Board Cover and Particular Plates 3. Remove the control board cover (remove 3 screws). 4. Remove the particular plate (remove 2 screws). 5. Remove the particular plate (remove 2 screws). 16.2.3 Removing the Control P.C. Board 6.
  • Page 67 16.2.4 Removing the Propeller Fan and Fan Motor 1. Follow the steps in 18.2.1 for removing the cabinet top plate and cabinet front plate. 2. Remove the propeller fan by removing the nut turning clockwise at its center. 3. Disconnect the fan motor connector from the control P.C.

  • Page 68: Technical Data

    17. Technical Data 17.1 Operation Characteristics (CU-2E15PBE) 17.1.1 One Indoor Unit Operation...
  • Page 70 17.1.2 Two Indoor Unit Operation...

  • Page 72: Operation Characteristics (Cu-2E18Pbe)

    17.2 Operation Characteristics (CU-2E18PBE) 17.2.1 One Indoor Unit Operation...
  • Page 74 17.2.2 Two Indoor Unit Operation...

  • Page 76: Operation Characteristics (Cu-3E18Pbe)

    17.3 Operation Characteristics (CU-3E18PBE) 17.3.1 One Indoor Unit Operation...
  • Page 82 17.3.2 Two Indoor Unit Operation...
  • Page 86 17.3.3 Three Indoor Unit Operation...

  • Page 88: Operation Characteristics (Cu-4E23Pbe)

    17.4 Operation Characteristics (CU-4E23PBE) 17.4.1 One Indoor Unit Operation...
  • Page 94 17.4.2 Two Indoor Unit Operation...
  • Page 96 17.4.3 Three Indoor Unit Operation...
  • Page 98 17.4.4 Four Indoor Unit Operation...

  • Page 100: Exploded View And Replacement Parts List

    18. Exploded View and Replacement Parts List 18.1 CU-2E15PBE CU-2E18PBE 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 101 SAFETY REF. NO. DESCRIPTION & NAME Q’TY CU-2E15PBE CU-2E18PBE REMARK CHASSIS ASSY CWD52K1277 ← FAN MOTOR BRACKET CWD541167 ← FAN MOTOR, AC 50W SINGLE ARW6405AC ← SCREW-FAN MOTOR BRACKET CWH551217 ← SCREW-FAN MOTOR MOUNT CWH55252J ← PROPELLER FAN CWH03K1066 ←...
  • Page 102 SAFETY REF. NO. DESCRIPTION & NAME Q’TY CU-2E15PBE CU-2E18PBE REMARK OPERATING INSTRUCTION ← INSTALLATION INSTRUCTION CWF615686 ← INSTALLATION INSTRUCTION CWF615687 ← INSTALLATION INSTRUCTION CWF615688 ← INSTALLATION INSTRUCTION CWF615689 ← INSTALLATION INSTRUCTION CWF615690 ← INSTALLATION INSTRUCTION CWF615691 ← INSTALLATION INSTRUCTION CWF615692 ←...

  • Page 103: Cu-3E18Pbe Cu-4E23Pbe

    18.2 CU-3E18PBE CU-4E23PBE 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 104 SAFETY REF. NO. DESCRIPTION & NAME QTY. CU-3E18PBE CU-4E23PBE REMARK CHASSIS ASSY CWD52K1212 ← SOUND PROOF BOARD CWH151194 ← FAN MOTOR BRACKET CWD541127 ← SCREW-BRACKET FAN MOTOR CWH551217 ← CONDENSER COMPLETE CWB32C2680 ← FAN MOTOR DC 60W 3PH EHDS80C60AC ← SCREW-FAN MOTOR MOUNT CWH551323 ←...
  • Page 105 REF. NO. DESCRIPTION & NAME QTY. CU-3E18PBE CU-4E23PBE REMARK TERMINAL COVER CWH171035 ← NUT-TERMINAL COVER CWH7080300J ← INSTALLATION INSTRUCTION CWF615715 ← INSTALLATION INSTRUCTION CWF615716 ← INSTALLATION INSTRUCTION CWF615717 ← INSTALLATION INSTRUCTION CWF615718 ← INSTALLATION INSTRUCTION CWF615719 ← INSTALLATION INSTRUCTION CWF615720 ←...

This manual is also suitable for:

Cu-3e18pbeCu-2e18pbeCu-4e23pbe

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