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Mitsubishi Electric MR. SLIM PUZ-M125VKA2 User Manual

Mitsubishi Electric MR. SLIM PUZ-M125VKA2
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SERVICE MANUAL
No.OCH773
SPLIT-TYPE AIR CONDITIONERS
R32
September 2021
Outdoor unit
[Model Name]
PUZ-M100VKA2
PUZ-M100VKA2-ET
PUZ-M100VKA2-ER
PUZ-M125VKA2
PUZ-M125VKA2-ET
PUZ-M125VKA2-ER
PUZ-M140VKA2
PUZ-M140VKA2-ET
PUZ-M140VKA2-ER
PUZ-M100YKA2
PUZ-M100YKA2-ET
PUZ-M100YKA2-ER
PUZ-M125YKA2
PUZ-M125YKA2-ET
PUZ-M125YKA2-ER
PUZ-M140YKA2
PUZ-M140YKA2-ET
PUZ-M140YKA2-ER
[Service Ref.]
PUZ-M100VKA2.TH
PUZ-M100VKA2-ET.TH
PUZ-M100VKA2-ER.TH
PUZ-M125VKA2.TH
PUZ-M125VKA2-ET.TH
PUZ-M125VKA2-ER.TH
PUZ-M140VKA2.TH
PUZ-M140VKA2-ET.TH
PUZ-M140VKA2-ER.TH
PUZ-M100YKA2.TH
PUZ-M100YKA2-ET.TH
PUZ-M100YKA2-ER.TH
PUZ-M125YKA2.TH
PUZ-M125YKA2-ET.TH
PUZ-M125YKA2-ER.TH
PUZ-M140YKA2.TH
PUZ-M140YKA2-ET.TH
PUZ-M140YKA2-ER.TH
PARTS CATALOG (OCB773)
Note:
This service manual
describes technical data
of the outdoor units only.
CONTENTS
1. REFERENCE MANUAL ·······················2
2. SAFETY PRECAUTION ·······················2
3. SPECIFICATIONS ···························· 13
4. DATA ·············································· 14
5. OUTLINES AND DIMENSIONS ··········· 17
6. WIRING DIAGRAM ··························· 18
7. WIRING SPECIFICATIONS ················ 21
8. REFRIGERANT SYSTEM DIAGRAM ··· 26
9. TROUBLESHOOTING ······················· 28
10. FUNCTION SETTING ························ 74
11. MONITORING THE OPERATION DATA
BY THE REMOTE CONTROLLER ······· 75
12. EASY MAINTENANCE FUNCTION ······ 83
13. DISASSEMBLY PROCEDURE ··········· 85
14. REMOTE CONTROLLER ··················· 91
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Mitsubishi Electric MR. SLIM PUZ-M125VKA2 Specifications

General IconGeneral
ModelPUZ-M125VKA2
SeriesMR. SLIM
CategoryAir Conditioner
BrandMitsubishi Electric
TypeSplit System
Cooling Capacity12.5 kW
Coefficient of Performance (COP)4.0
RefrigerantR410A
Operating Temperature (Heating)-15°C to 24°C
Heating Capacity14 kW
Indoor Unit Weight30 kg

Summary

Reference Manual

Always Observe for Safety

Provides essential safety precautions for accessing electrical components and circuits.

Safety Precaution

Cautions Related to New Refrigerant

Details precautions for handling R32 refrigerant and related tools during installation and repair.

Warning for Service

Cautions for Service

Provides guidelines for performing maintenance and service operations safely.

Cautions for Unit Using R32 Refrigerant

Information on Servicing

Outlines safety checks and procedures for servicing units with flammable refrigerants.

Repairs to Sealed Components

Details safety procedures for repairing sealed components, emphasizing electrical disconnects.

Repair to Intrinsically Safe Components

Detection of Flammable Refrigerants

Prohibits ignition sources and specifies methods for detecting refrigerant leaks.

Leak Detection Methods

Explains the use of electronic leak detectors and leak detection fluids.

Wiring Diagram

Wiring Specifications

Field Electrical Wiring (Power Wiring Specifications)

Specifies wiring sizes and circuit ratings for electrical connections.

Refrigerant System Diagram

Troubleshooting

Checkpoint Under Test Run

Lists checks to perform before initiating a test run for the unit.

Self-Diagnosis Action Table

Provides actions for detected abnormalities when the power is ON.

Abnormalities Detected While Unit is Operating

Details error codes and troubleshooting steps for operational abnormalities.

Error History

Explains how to check and interpret error codes displayed by LED indicators.

Function Setting

Remote Controller

Test Run

Instructions for performing test runs on the unit using the remote controller.

Error Information

Explains how to check and reset error codes displayed on the remote controller.

Service Menu

Details how to access and navigate the service menu, including password requirements.

Self-Diagnosis

Guides on performing self-diagnosis and resetting error history.

Remote Controller Check

Provides steps to diagnose and check the remote controller's functionality.

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