Mitsubishi Electric PUZ-HA42NKA1 User Manual

SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL ····························· 2
2. SAFETY PRECAUTION ·····························2
3. FEATURES ············································· 6
4. SPECIFICATIONS ···································· 7
5. DATA······················································ 9
6. OUTLINES AND DIMENSIONS ················· 13
7. WIRING DIAGRAM ································· 16
8. WIRING SPECIFICATIONS ······················ 19
9. REFRIGERANT SYSTEM DIAGRAM ············ 23
10. TROUBLESHOOTING ····························· 26
11. EASY MAINTENANCE FUNCTION ············ 79
12. FUNCTION SETTING ······························ 81
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ·· 83
14. DISASSEMBLY PROCEDURE ·················· 92
15. REMOTE CONTROLLER ························105
No. OCH750
REVISED EDITION-A
R410A
November 2020
Note:
• This manual describes ser-
vice data of the outdoor units
only.
PUZ-HA24NHA1
PUZ-HA30NKA
PUZ-HA36NKA
PUZ-HA42NKA1
PARTS CATALOG (OCB750)
[Model Name]
[Service Ref.]
PUZ-HA24NHA1
PUZ-HA30NKA
PUZ-HA36NKA
PUZ-HA42NKA1
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
PUZ-HA30NKA
PUZ-HA36NKA
PUZ-HA42NKA1
PUZ-HA24NHA1
Revision:
•
Some descriptions have
been modified
in REVISED
EDITION-A .
OCH750 is void.

Mitsubishi Electric PUZ-HA42NKA1 Specifications

General

Brand	Mitsubishi Electric
Model	PUZ-HA42NKA1
Category	Air Conditioner
Language	English

Summary

Safety Precautions

General Safety Observations

General safety rules to follow during service and operation, emphasizing precautions before and during repair.

R410A Refrigerant Handling Cautions

Specific precautions for using R410A refrigerant, covering pipe cleanliness, oil types, and tool requirements.

Refrigerant Piping Work Cautions

Guidelines for refrigerant piping work, including pipe thickness, flare dimensions, and proper tool usage.

Features

Data

Wiring Specifications

Outdoor Unit Power Supply for Indoor Units

Separate Indoor/Outdoor Unit Power Supplies

M-NET Wiring and Address Configuration

Troubleshooting

Troubleshooting Overview and Error Codes

Summarizes self-diagnosis, test run checks, error codes, and troubleshooting by phenomena.

Component Testing and Diagrams

Guides on checking components, parts, and circuit diagrams for troubleshooting.

Emergency Operation Procedures

Details procedures for emergency operation, including supported error codes and data.

System Configuration and Switches

Easy Maintenance Function

Function Setting

Unit Function Setting via Remote Controller

Selecting Functions with Remote Controller

Monitoring Operation Data

Disassembly Procedure

Electrical Components and Sensors Removal

Major Component and Heater Removal

Procedures for removing compressor, power receiver, and base heater.

Remote Controller

Controller Functions and Interface Overview

Error Information and History Management

Guides on viewing, resetting, and deleting error information and history logs on the remote controller.

Service Menu and Configuration Options

Self-Diagnosis and Controller Check

Covers self-diagnosis procedures and how to check the remote controller's functionality.