Mitsubishi Electric MR. SLIM PUZ-M140VKA2 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-M140VKA2 Specifications

General

Brand	Mitsubishi Electric
Model	MR. SLIM PUZ-M140VKA2
Category	Air Conditioner
Language	English

Summary

Refrigerant Handling and Safety

Cautions for R32 Refrigerant Use

Specific warnings and precautions for working with R32 refrigerant.

Service Warnings and Procedures

General Service Warnings

Important warnings applicable to all service and repair operations.

Unit Handling and R32 Refrigerant Guidelines

R32 Refrigerant Unit Precautions

Specific handling and installation advice for units using R32 refrigerant.

Unit Specifications

General Model Specifications

Technical specifications for various outdoor unit models.

Wiring Specifications

Field Electrical Wiring Requirements

Specifications for power wiring, including wire size and circuit ratings.

Refrigerant System Diagram

Refrigerant Circuit Overview

Diagram illustrating the refrigerant cycle and its components.

Refrigerant Handling Operations

Refrigerant Collection (Pump Down) Procedure

Step-by-step guide for safely recovering refrigerant from the system.

Troubleshooting Guide

General Troubleshooting Overview

Summary of check codes and corrective actions for unit issues.

Emergency Operation Mode

Emergency Operation Procedures and Conditions

Guidelines for activating and performing emergency unit operation.

Outdoor Unit Inspection Display

LED Indicators and Error Code Interpretation

Guide to understanding LED patterns and error codes for unit status.

Easy Maintenance Function

Smooth Maintenance Procedure

Steps for performing smooth maintenance and checking unit status.

Error Information Display

Viewing and Resetting Error Codes

Instructions for checking and clearing error information on the remote.

Service Menu Navigation

Accessing and Using the Service Menu

Steps to access the service menu and enter the maintenance password.

Test Run Operation

Performing Unit Test Runs

Guide on how to conduct test runs for various unit models.

Error History Management

Viewing and Deleting Error Records

Procedures for accessing and clearing stored error history.

Self-Diagnosis Function

Performing Self-Diagnosis and Resetting Errors

Remote Controller Diagnostics

Checking Remote Controller Communication

Smooth Maintenance Operations

Performing Smooth Maintenance and Data Monitoring