Mitsubishi Electric MR. SLIM PUZ-M100YKA2-ET User Manual

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

Mitsubishi Electric MR. SLIM PUZ-M100YKA2-ET Specifications

General

Brand	Mitsubishi Electric
Model	MR. SLIM PUZ-M100YKA2-ET
Category	Air Conditioner
Language	English

Summary

SAFETY PRECAUTIONS

Unit Symbols and General Safety

Service and Refrigerant Handling Cautions

Cautions for repair service, refrigerant handling, and R32 specific safety.

Unit Operation Safety

Safety measures for operating units with R32, including servicing and component checks.

Refrigerant Recovery and Charging Procedures

Procedures for refrigerant removal, evacuation, charging, and decommissioning.

SERVICE TOOLS AND PIPE PRECAUTIONS

Reusing Existing Refrigerant Pipes

Refrigerant Piping Work Cautions

Cautions for piping work, including pressure, thickness, dimensions, and tools.

INSTALLATION GUIDELINES

Outdoor Unit Installation Location

Minimum Installation Area Requirements

Indoor Unit Installation Guidelines

SPECIFICATIONS AND DATA

Refrigerant and Piping Data

Specifies refrigerant charge, oil, and piping dimensions.

Refilling Refrigerant and Compressor Data

Standard Operation Data

WIRING DIAGRAMS AND SPECIFICATIONS

Wiring Diagram Legend

Field Electrical Wiring Specifications

Specifies wiring sizes and ratings for power supply and connections.

M-NET WIRING AND ADDRESS SETTINGS

M-NET Wiring Method and Notes

Address Setting Procedures

REFRIGERANT SYSTEM AND OPERATION PROCEDURES

Refrigerant System Diagram

Diagram illustrating the refrigerant circuit and components.

Refrigerant Collecting and Test Run

Procedures for refrigerant collecting (pump down) and test run operations.

TROUBLESHOOTING AND ERROR RESOLUTION

Troubleshooting Overview and Checkpoints

General troubleshooting approach, pre-test run checks, and error information references.

Unit Error Code Identification

Lists error codes and symptoms detected by indoor and outdoor units.

Specific Error Code Resolution

Troubleshooting steps for various error codes related to power, operation, and communication.

Component Diagnosis and Repair

Guides on checking components, diagnosing fan motor issues, and using test points.

Emergency Operation and System Monitoring

EASY MAINTENANCE FUNCTION

Smooth Maintenance Overview

Operation Condition Guide

REMOTE CONTROLLER

Error Handling and Diagnosis via Remote

Maintenance and Data Monitoring Functions