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Panasonic CU-10ME1XPK User Manual

Panasonic CU-10ME1XPK
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ORDER No. PACD011001C2
Service Manual
Urban Multi
UM Series Using R-407C
Inverter MX1R Series
Heat Recovery ME1R Series
Combination MA1R Series
UM Series Using R-22
Inverter MX1 Series
Heat Recovery ME1 Series
2001 Matsushita Electric Industrial Co., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.
Specifications are subject to change without notice for further improvement.
WARNIING
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.
IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacture’s specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacture.

Table of Contents

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Panasonic CU-10ME1XPK Specifications

General IconGeneral
BrandPanasonic
ModelCU-10ME1XPK
CategoryAir Conditioner
LanguageEnglish

Summary

Introduction

1.1 Safety Cautions

Details safety precautions to be observed during repair work on the equipment.

UM Series Using R-22

Part 4 Troubleshooting

3. Troubleshooting

General guidance for troubleshooting common system issues.

3.1 Indoor Unit: Error of External Protection Device

Addresses potential errors related to external protection devices connected to the indoor unit.

3.2 Indoor Unit: PC Board Defect

Guides troubleshooting for PC board defects in indoor units.

3.3 Indoor Unit: Malfunction of Drain Level Control System (33H)

Details troubleshooting steps for issues with the indoor unit's drain level control system.

3.4 Indoor Unit: Fan Motor (M1F) Lock, Overload

Provides solutions for fan motor lock or overload issues in indoor units.

3.5 Indoor Unit: Malfunction of Swing Flap Motor (M1S)

Guides troubleshooting for malfunctions related to the indoor unit's swing flap motor.

3.6 Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E)

Addresses issues concerning the moving part of the electronic expansion valve in indoor units.

3.7 Indoor Unit: Drain Level above Limit

Troubleshoots situations where the indoor unit's drain level exceeds the normal limit.

3.8 Indoor Unit: Malfunction of Capacity Determination Device

Covers troubleshooting for malfunctions in the indoor unit's capacity determination device.

3.9 Indoor Unit: Malfunction of Thermistor (R2T) for Liquid Pipe

Details steps for diagnosing malfunctions of the liquid pipe thermistor (R2T) in indoor units.

3.10 Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes

Guides troubleshooting for issues with the gas pipe thermistor (R3T) in indoor units.

3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet

Addresses troubleshooting for malfunctions of the air inlet thermistor (R1T) in indoor units.

3.12 Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller

Troubleshoots issues related to the thermostat sensor located within the remote controller.

3.13 Outdoor Unit: Actuation of Safety Device

Covers troubleshooting steps when an outdoor unit safety device is actuated.

3.14 Outdoor Unit: PC Board Defect

Provides guidance for troubleshooting defects found on the outdoor unit's PC board.

3.15 Outdoor Unit: Actuation of High Pressure Switch

Details troubleshooting procedures when the outdoor unit's high pressure switch is actuated.

3.16 Outdoor Unit: Actuation of Low Pressure Switch

Covers troubleshooting steps when the outdoor unit's low pressure switch is actuated.

3.17 Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E)

Addresses issues concerning the moving part of the electronic expansion valve in outdoor units.

3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature

Guides troubleshooting for abnormal discharge pipe temperatures in outdoor units.

3.19 Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air

Details troubleshooting for malfunctions of the outdoor air thermistor (R1T) in outdoor units.

3.20 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T)

Covers troubleshooting for malfunctions of the discharge pipe thermistor (R3T) in outdoor units.

3.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe

Guides troubleshooting for malfunctions of the suction pipe thermistor (R4T) in outdoor units.

3.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger

Details troubleshooting for malfunctions of the heat exchanger thermistor (R2T) in outdoor units.

3.23 Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor

Addresses troubleshooting for malfunctions of the discharge pipe pressure sensor in outdoor units.

3.24 Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor

Guides troubleshooting for malfunctions of the suction pipe pressure sensor in outdoor units.

3.25 Outdoor Unit: Malfunction of Oil Temperature Thermistor (R5T)

Details troubleshooting for malfunctions of the oil temperature thermistor (R5T) in outdoor units.

3.26 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure

Covers troubleshooting for issues caused by low pressure or electronic expansion valve failures.

3.27 Negative Phase, Open Phase

Guides troubleshooting for negative phase or open phase power supply issues.

3.28 Malfunction of Transmission between Indoor Units

Addresses malfunctions related to the transmission between indoor units.

3.29 Malfunction of Transmission between Remote Controller and Indoor Unit

Details troubleshooting for transmission malfunctions between remote controllers and indoor units.

3.30 Malfunction of Transmission between Outdoor Units

Guides troubleshooting for transmission malfunctions between outdoor units.

3.31 Malfunction of Transmission between Master and Slave Remote Controllers

Covers troubleshooting for transmission malfunctions between master and slave remote controllers.

3.32 Malfunction of Transmission between Indoor and Outdoor Units in the Same System

Details troubleshooting for transmission malfunctions between indoor and outdoor units within the same system.

3.33 Excessive Number of Indoor Units

Guides troubleshooting when the number of connected indoor units exceeds the system's capacity.

3.34 Address Duplication of Central Remote Controller

Addresses troubleshooting for central remote controller address duplication issues.

3.35 Refrigerant System not set, Incompatible Wiring/Piping

Covers troubleshooting for refrigerant system configuration, wiring, and piping compatibility issues.

3.36 Malfunction of System, Refrigerant System Address Undefined

Guides troubleshooting for system malfunctions or undefined refrigerant system addresses.

Failure Diagnosis for Inverter System

Troubleshooting (Inverter)

5.1 Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise

Addresses malfunctions related to the inverter's radiating fin temperature rise.

5.2 Outdoor Unit: Inverter Instantaneous Over-Current

Guides troubleshooting for instantaneous over-current issues in the inverter unit.

5.3 Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload

Details troubleshooting for inverter thermostat sensor and compressor overload problems.

5.4 Outdoor Unit: Inverter Stall Prevention, Compressor Lock

Covers troubleshooting for inverter stall prevention and compressor lock issues.

5.5 Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board

Addresses malfunctions in the transmission between the inverter unit and the control PC board.

5.6 Power Supply Insufficient or Instantaneous Failure

Guides troubleshooting for insufficient power supply or instantaneous failures related to the power supply.

5.7 Outdoor Unit: Inverter Over-Ripple Protection

Details troubleshooting for inverter over-ripple protection issues.

5.8 Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor

Covers troubleshooting for malfunctions of the inverter radiating fin temperature rise sensor.

Troubleshooting (OP: Central Remote Controller)

6.1 Malfunction of Transmission between Central Remote Controller and Indoor Unit

Addresses malfunctions in the transmission between the central remote controller and indoor units.

6.2 PC Board Defect

Guides troubleshooting for PC board defects in the central remote controller.

6.3 Malfunction of Transmission between Optional Controllers for Centralised Control

Details troubleshooting for transmission malfunctions between optional controllers used in centralized control.

6.4 Improper Combination of Optional Controllers for Centralised Control

Covers troubleshooting for incorrect combinations of optional controllers for centralized control.

6.5 Address Duplication, Improper Setting

Guides troubleshooting for issues related to address duplication or improper settings in centralized control.

Troubleshooting (OP: Schedule Timer)

7.1 Malfunction of Transmission between Central Remote Controller and Indoor Unit

Addresses malfunctions in the transmission between the central remote controller and indoor units when using a schedule timer.

7.2 PC Board Defect

Guides troubleshooting for PC board defects in the schedule timer.

7.3 Malfunction of Transmission between Optional Controllers for Centralised Control

Details troubleshooting for transmission malfunctions between optional controllers in centralized control when using a schedule timer.

Troubleshooting (OP: Unified ON/OFF Controller)

UM Series Using R-407C

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