Panasonic CU-2E15LBE Service Manual
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Panasonic CU-2E15LBE Service Manual

Outdoor unit
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Please file and use this manual together with the service manual for Model No. CS-E7LKEW
CU-E7LKE-3 CS-E9LKEW CU-E9LKE CS-E9LKEW CU-E9LKE-3 CS-E12LKEW CU-E12LKE CS-E12LKEW CU-E12LKE-3
CS-E15LKEW CU-E15LKE CS-E18LKEW CU-E18LKE CS-E21LKEW CU-E21LKE CS-XE7LKEW CU-E7LKE CS-XE7LKEW
CU-E7LKE-3
CS-XE9LKEW
CU-E12LKE-3 CS-XE15LKEW CU-E15LKE CS-XE18LKEW CU-E18LKE CS-XE21LKEW CU-E21LKE, CS-E10KB4EA
CU-E10HBEA CS-E10KD3EA CU-E10HBEA, Order No. PHAAM1001023C2 PHAAM1003091C2 PHAAM1003092C2

TABLE OF CONTENTS

1 Safety Precautions----------------------------------------------- 3
2 Specifications ----------------------------------------------------- 5
2.1. CU-2E15LBE ----------------------------------------------- 5
2.2. CU-2E18LBE ----------------------------------------------- 7
2.3. CU-3E18LBE ----------------------------------------------- 8
CU-E9LKE
CS-XE9LKEW
PAGE
Outdoor Unit
CU-2E15LBE
CU-2E18LBE
CU-3E18LBE
CU-4E23LBE
CU-E9LKE-3
CS-XE12LKEW
2.4. CU-4E23LBE------------------------------------------------9
3 Dimensions ------------------------------------------------------- 17
3.1. CU-2E15LBE CU-2E18LBE -------------------------- 17
3.2. CU-3E18LBE CU-4E23LBE -------------------------- 17
4 Refrigeration Cycle Diagram -------------------------------- 18
© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2010.
Unauthorized copying and distribution is a violation of law.
Order No. PHAAM1003090C3
Air Conditioner
CU-E7LKE
CS-E7LKEW
CU-E12LKE
CS-XE12LKEW
PAGE

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Summary of Contents for Panasonic CU-2E15LBE

  • Page 1: Table Of Contents

    3.1. CU-2E15LBE CU-2E18LBE -------------------------- 17 2.2. CU-2E18LBE ----------------------------------------------- 7 3.2. CU-3E18LBE CU-4E23LBE -------------------------- 17 2.3. CU-3E18LBE ----------------------------------------------- 8 4 Refrigeration Cycle Diagram -------------------------------- 18 © Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2010. Unauthorized copying and distribution is a violation of law.
  • Page 2 8 Printed Circuit Board ------------------------------------------ 30 CU-4E23LBE) -------------------------------------------- 58 8.1. Main Printed Circuit Board ----------------------------- 30 17.2. Self Diagnosis Function (CU-2E15LBE and 8.2. Noise Filter Printed Circuit Board -------------------- 32 CU-2E18LBE) -------------------------------------------- 60 8.3. Display Printed Circuit Board ------------------------- 32 18 Disassembly and Assembly Instructions -------------- 63 18.1.

  • 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 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 2.1. CU-2E15LBE Item Unit OUTDOOR UNIT Indoor Unit Combination 2.0kW + 2.0kW 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 Cooling Minimum Indoor Operation Range Maximum — Heating Minimum — Maximum Cooling Minimum Outdoor Operation Range Maximum Heating Minimum Note • Specifications are subject to change without notice for further improvement.

  • Page 7: Cu-2E18Lbe

    2.2. CU-2E18LBE Item Unit OUTDOOR UNIT Indoor Unit Combination 3.2kW + 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: Cu-3E18Lbe

    2.3. CU-3E18LBE Item Unit OUTDOOR UNIT Indoor Unit Combination 2.0kW + 2.0kW + 5.0kW 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...

  • Page 9: Cu-4E23Lbe

    2.4. CU-4E23LBE Item Unit OUTDOOR UNIT Indoor Unit Combination 2.0kW + 2.0kW + 2.0kW + 5.0kW 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)
  • Page 10 • Multi Split Combination Possibility: - A single outdoor unit enables air conditioning of up to two separate rooms for CU-2E15LBE, CU-2E18LBE. - A single outdoor unit enables air conditioning of up to three separate rooms for CU-3E18LBE. - A single outdoor unit enables air conditioning of up to four separate rooms for CU-4E23LBE, CU-4E27CBPG.
  • Page 11 • Outdoor Unit : CU-2E15LBE • Outdoor Unit : CU-2E18LBE...
  • Page 12 • Outdoor Unit : CU-3E18LBE...
  • Page 13 • Outdoor Unit : CU-4E23LBE...
  • Page 15 • Outdoor Unit : CU-4E27CBPG...

  • Page 17: Dimensions

    3 Dimensions 3.1. CU-2E15LBE CU-2E18LBE 3.2. CU-3E18LBE CU-4E23LBE...

  • Page 18: Refrigeration Cycle Diagram

    4 Refrigeration Cycle Diagram 4.1. CU-2E15LBE CU-2E18LBE...

  • Page 19: Cu-3E18Lbe

    4.2. CU-3E18LBE...

  • Page 20: Cu-4E23Lbe

    4.3. CU-4E23LBE...

  • Page 21: Block Diagram

    5 Block Diagram 5.1. CU-2E15LBE CU-2E18LBE...

  • Page 22: Cu-3E18Lbe

    5.2. CU-3E18LBE...

  • Page 23: Cu-4E23Lbe

    5.3. CU-4E23LBE...

  • Page 24: Wiring Connection Diagram

    6 Wiring Connection Diagram 6.1. CU-2E15LBE CU-2E18LBE...

  • Page 25: Cu-3E18Lbe

    6.2. CU-3E18LBE...

  • Page 26: Cu-4E23Lbe

    6.3. CU-4E23LBE...

  • Page 27: Electronic Circuit Diagram

    7 Electronic Circuit Diagram 7.1. CU-2E15LBE CU-2E18LBE...

  • Page 28: Cu-3E18Lbe

    7.2. CU-3E18LBE...

  • Page 29: Cu-4E23Lbe

    7.3. CU-4E23LBE...

  • Page 30: Printed Circuit Board

    8 Printed Circuit Board 8.1. Main Printed Circuit Board 8.1.1. CU-2E15LBE CU-2E18LBE...
  • Page 31 8.1.2. CU-3E18LBE CU-4E23LBE...

  • Page 32: Noise Filter Printed Circuit Board

    8.2. Noise Filter Printed Circuit Board 8.3. Display Printed Circuit Board...

  • Page 33: Installation Information

    9 Installation Information 9.1. CU-2E15LBE 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 34: Cu-2E18Lbe

    9.2. CU-2E18LBE 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 35: Cu-3E18Lbe

    9.3. CU-3E18LBE 9.3.1. Check Points...

  • Page 36: Cu-4E23Lbe

    9.4. CU-4E23LBE 9.4.1. Check Points...

  • Page 37: Installation Instruction

    10 Installation Instruction 10.1. CU-2E15LBE CU-2E18LBE 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 38: Connecting The Piping

    10.1.4. Connecting The Piping Connecting The Piping To Indoor Unit Please make flare after inserting flare nut (locate at joint portion of tube assembly) onto the copper pipe. (In case of using long piping) Connect the piping • Align the center of piping and sufficiently tighten the flare nut with fingers.

  • Page 39: Connect The Cable To The Outdoor Unit

    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. • Be sure to connect the end of the charging hose with the push pin to the service port. 2.

  • Page 40: Cu-3E18Lbe Cu-4E23Lbe

    10.2. CU-3E18LBE CU-4E23LBE 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 41: Connect The Piping

    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.

  • Page 42: 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 43 10.2.5. Connect The Cable To The Outdoor Unit 1. Remove the control board cover metal from the unit by 4. Connect the power supply cord and connecting cable loosening two screws. between indoor unit and outdoor unit according to the 2.

  • Page 44: Heat Insulation

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

  • Page 45: Operation Control (Cu-2E15Lbe And Cu-2E18Lbe)

    11 Operation Control (CU-2E15LBE and CU-2E18LBE) Compressor Operation Frequency 11.1. • The compressor operation frequency is determined by room temperature, capacity, and model type. - When operation is started after the air conditioner has been stopped for more than one hour, the air conditioner operates at a high frequency which lowers the room temperature quickly for cooling (or raises it quickly for heating).

  • Page 46: Operation Control (Cu-3E18Lbe And Cu-4E23Lbe)

    12 Operation Control (CU-3E18LBE and CU-4E23LBE) 12.1. Cooling Operation 12.1.1. Outdoor fan control • When cooling operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure below: 12.1.2. Annual Cooling control • This control is to enable cooling operation when outdoor ambient temperature is low. •...

  • Page 47: Heating Operation

    12.2. Heating Operation 12.2.1. Outdoor fan control • When heating operation is enabled, based on outdoor ambient temperature, fan motor control will be adjusted according to figure below: • 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 48: Simultaneous Operation Control

    13 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 49: Protection Control (Cu-2E15Lbe And Cu-2E18Lbe)

    14 Protection Control (CU-2E15LBE and CU-2E18LBE) 14.1. Time delay safety control • The compressor does not restart for 3 minutes after stop of compressor. 14.2. Total running current control • When the air conditioner has been operated at the capacity designated by the indoor unit and the total running current exceeds setting I1, the operating frequency of the compressor is reduced.

  • Page 50: Low Pressure Prevention Control (Gas Leakage Detection)

    14.5. Low Pressure Prevention Control (Gas Leakage Detection) • Control start conditions - For 5 minutes, the compressor continuously operates and outdoor total current is between 1.5A and 1.88A. - During Cooling and Soft Dry operations: - Indoor heat exchanger temperature is above 20°C. - During heating operations: - Indoor heat exchanger temperature is below 25°C.

  • Page 51: Protection Control For Heating Operation

    14.7.2. Outdoor air temperature control • The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below. This control will begin 1 minute after the compressor starts. 14.7.3. Abnormal Wiring or Piping Connection Checking Control •...

  • Page 52: Protection Control (Cu-3E18Lbe And Cu-4E23Lbe)

    15 Protection Control (CU-3E18LBE and CU-4E23LBE) 15.1. 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. 15.2.

  • Page 53: Cooling Overload Control (Cool)

    15.5. Cooling overload control (Cool) • This control detect outdoor pipe temperature and perform the compressor frequency restriction during cooling operation. 15.6. Heating overload control (Heat) • This control detect indoor pipe temperature and perform the compressor frequency restriction during heating operation. •...

  • Page 54: Deice Control

    15.8. Deice Control • When outdoor pipe temperature and outdoor air temperature is low, deice operation starts where indoor fan motor and outdoor fan motor stop, indoor unit horizontal vane close and operation LED blink with compressor ON. 15.9. Time Delay Safety Control (Restart Control) •...

  • Page 55: Compressor Protection Control (Gas Leak Detection Control 2)

    15.14. Compressor Protection Control (Gas leak detection control 2) • This control detect gas leakage condition to prevent compressor damage. • Control start condition - All connected indoor units capability supply ON. - Compressor ON with maximum frequency. - Not during annual cooling. - Compressor discharge temperature high.

  • Page 56: Servicing Mode

    16 Servicing Mode 16.1. CU-3E18LBE & CU-4E23LBE 16.1.1. 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

    16.1.3. 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: Troubleshooting Guide

    17 Troubleshooting Guide 17.1. Self Diagnosis Function (CU-2E15LBE and CU-2E18LBE) Abnormality or protection control Diagnosis Abnormality Emergency Primary location to verify display judgement operation Indoor/outdoor abnormal > 1 min after starting Indoor fan operation can • Internal/external cable communication operation...
  • Page 59 Abnormality or protection control Diagnosis Abnormality Emergency Primary location to verify display judgement operation Outdoor compressor abnormal 4 times occurrences — • Compressor revolution within 20 minutes Cooling high pressure protection 4 times occurrences — • Outdoor refrigerant cycle within 20 minutes IPM (power transistor) overheating —...

  • Page 60: Cu-4E23Lbe)

    17.2. Self Diagnosis Function (CU-3E18LBE and CU-4E23LBE) • 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 61 Diagnosis Abnormality display Abnormality Protection LED 6 LED 5 LED 4 LED 3 LED 2 LED 1 Problem Check location protection judgement operation control Outdoor high Continuous — High pressure sensor • High pressure pressure for 1 minutes open circuit during sensor sensor compressor stop...
  • Page 62 Diagnosis Abnormality display Abnormality Protection LED 6 LED 5 LED 4 LED 3 LED 2 LED 1 Problem Check location protection judgement operation control Compressor 3 times — Compressor • Insufficient overheating happen within overheat refrigerant protection 30 minutes Total running 3 times —...

  • Page 63: 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. 18.1. Outdoor Unit Removal Procedure (CU-2E15LBE CU-2E18LBE) Caution! When handling electronic controller, be careful of electrostatic discharge.

  • Page 64: Outdoor Unit Removal Procedure (Cu-3E18Lbe Cu-4E23Lbe)

    18.1.4. 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 65 18.2.2. Remove the Control Board Cover and Particular Plates 3. Remove the control board cover (remove 3 screw). 4. Remove the particular plate (remove 2 screw). 5. Remove the particular plate (remove 2 screw). 18.2.3. Removing the Control P.C. Board 6.
  • Page 66 18.2.4. Removing the Propeller Fan and Fan Motor 1. Follow the steps in 16.2.1 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. Board.

  • Page 67: Technical Data

    19 Technical Data 19.1. Operation Characteristics (CU-2E15LBE) 19.1.1. One Indoor Unit Operation...
  • Page 69 19.1.2. Two Indoor Unit Operation...

  • Page 71: Operation Characteristics (Cu-2E18Lbe)

    19.2. Operation Characteristics (CU-2E18LBE) 19.2.1. One Indoor Unit Operation...
  • Page 73 19.2.2. Two Indoor Unit Operation...

  • Page 75: Operation Characteristics (Cu-3E18Lbe)

    19.3. Operation Characteristics (CU-3E18LBE) 19.3.1. One Indoor Unit Operation...
  • Page 81 19.3.2. Two Indoor Unit Operation...
  • Page 85 19.3.3. Three Indoor Unit Operation...

  • Page 87: Operation Characteristics (Cu-4E23Lbe)

    19.4. Operation Characteristics (CU-4E23LBE) 19.4.1. One Indoor Unit Operation...
  • Page 93 19.4.2. Two Indoor Unit Operation...
  • Page 95 19.4.3. Three Indoor Unit Operation...
  • Page 97 19.4.4. Four Indoor Unit Operation...

  • Page 99: Exploded View And Replacement Parts List

    20 Exploded View and Replacement Parts List 20.1. CU-2E15LBE CU-2E18LBE 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. NO. PART NAME & DESCRIPTION QTY. CU-2E15LBE CU-2E18LBE REMARKS ← CHASSY ASSY CWD50K2058 ← FAN MOTOR BRACKET CWD541089 ← FAN MOTOR AC 50W SINGLE CWA981072 ← PROPELLER FAN CWH03K1013 ← NUT - PROPELLER FAN CWH561034J ← COMPRESSOR 5CS102XFC ←...

  • Page 101: Cu-3E18Lbe Cu-4E23Lbe

    20.2. CU-3E18LBE CU-4E23LBE 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 102 REF. NO. PART NAME & DESCRIPTION QTY. CU-3E18LBE CU-4E23LBE REMARKS ← CHASSY ASSY CWD52K1212 ← SOUND PROOF BOARD CWH151194 ← FAN MOTOR BRACKET CWD541127 ← SCREW-BRACKET FAN MOTOR CWH551217 ← CONDENSER COMPLETE CWB32C2680 ← FAN MOTOR DC 60W 3PH EHDS80C60AC ←...
  • Page 103 REF. NO. PART NAME & DESCRIPTION QTY. CU-3E18LBE CU-4E23LBE REMARKS ← NUT-TERMINAL COVER CWH7080300J ← INSTALLATION INSTRUCTION CWF614367 ← INSTALLATION INSTRUCTION CWF614368 ← INSTALLATION INSTRUCTION CWF614369 ← INSTALLATION INSTRUCTION CWF614370 ← INSTALLATION INSTRUCTION CWF614371 ← INSTALLATION INSTRUCTION CWF614372 ← INSTALLATION INSTRUCTION CWF614373 ←...

This manual is also suitable for:

Cu-2e18lbeCu-3e18lbeCu-4e23lbe

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