Mitsubishi Electric PUZ-A36NHA User Manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
CONTENTS
1. TECHNICAL CHANGES·································2
2. REFERENCE MANUAL··································2
3. SAFETY PRECAUTION··································3
4. FEATURES ·····················································6
5. SPECIFICATIONS···········································7
6. DATA ·······························································9
7. OUTLINES AND DIMENSIONS····················13
8. WIRING DIAGRAM·······································16
9. WIRING SPECIFICATIONS ··························20
10. REFRIGERANT SYSTEM DIAGRAM ··············23
11. TROUBLESHOOTING···································26
12. EASY MAINTENANCE FUNCTION··············81
13. FUNCTION SETTING····································84
14. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ············92
15. DISASSEMBLY PROCEDURE ···················102
16. PARTS LIST ················································117
17. RoHS PARTS LIST ·····································126
No.OC367
REVISED EDITION-C
R410A
June 2007
[model names]
PUZ-A18NHA
PUZ-A24NHA
PUZ-A30NHA
PUZ-A36NHA
PUZ-A42NHA
PUZ-A18NHA-BS
PUZ-A24NHA-BS
PUZ-A30NHA-BS
PUZ-A36NHA-BS
PUZ-A42NHA-BS
PUY-A12NHA
PUY-A18NHA
PUY-A24NHA
PUY-A30NHA
PUY-A36NHA
PUY-A42NHA
PUY-A12NHA-BS
PUY-A18NHA-BS
PUY-A24NHA-BS
PUY-A30NHA-BS
PUY-A36NHA-BS
PUY-A42NHA-BS
[Service Ref.]
PUZ-A18NHA
PUZ-A24NHA
PUZ-A30NHA
PUZ-A36NHA
PUZ-A42NHA
PUZ-A18NHA-BS
PUZ-A24NHA-BS
PUZ-A30NHA-BS
PUZ-A36NHA-BS
PUZ-A42NHA-BS
PUY-A12NHA PUY-A12NHA
1
PUY-A18NHA PUY-A18NHA1
PUY-A24NHA PUY-A24NHA1
PUY-A30NHA PUY-A30NHA1
PUY-A36NHA PUY-A36NHA1
PUY-A42NHA
PUY-A12NHA
1-BS
PUY-A18NHA
1-BS
PUY-A24NHA
1-BS
PUY-A30NHA
1-BS
PUY-A36NHA
1-BS
PUY-A42NHA-BS
NOTE:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products
have <G> mark on the spec
name plate.
• For servicing RoHS compliant
products, refer to the RoHS
PARTS LIST.
PUZ-A24/30/36NHA
PUY-A24/30/36NHA
Revision:
• “9-2. SEPARATE INDOOR
UNIT/OUTDOOR UNIT
POWER SUPPLIES” is
deleted in REVISED
EDITION-C.
• Some descriptions have
been modified.
• Please void OC367 REVISED
EDITION-B.
Outdoor unit
OC367C--1.qxp 07.6.20 0:56 PM Page 1

Mitsubishi Electric PUZ-A36NHA Specifications

General

Brand	Mitsubishi Electric
Model	PUZ-A36NHA
Category	Air Conditioner
Language	English

Summary

Technical Changes

Reference Manual

Indoor Unit Information

Details on indoor unit models and related service references.

Technical Data Book Reference

Lists reference to the technical data book for additional information.

Safety Precautions

General Safety Guidelines

Essential safety rules before accessing unit components.

R410A Refrigerant Handling Cautions

Specific safety measures for R410A refrigerant and required tools.

Features

Chargeless System Overview

Description of the pre-charged refrigerant system and its benefits.

Specifications

Data

Refrigerant & Compressor Data

Technical data on refrigerant charge and compressor specifications for various models.

Noise Criterion Curves

Acoustic performance data presented as curves for different frequency bands.

Outlines and Dimensions

Outdoor Unit Installation Space

Specifies required clearances for free space, foundation, and wiring access.

Wiring Diagram

Electrical Wiring Schematics

Detailed diagrams illustrating the electrical connections for all relevant models.

Wiring Specifications

Indoor Unit Power Supply Specifications

Details wiring requirements for indoor unit power supplied from the outdoor unit.

M-NET Communication Wiring

Guidelines for M-NET wiring, including noise prevention and cable types.

Refrigerant System Diagram

Refrigerant Circuit Schematics

Diagrams showing the refrigerant flow path within the system for different units.

Troubleshooting

Troubleshooting Guide and Test Run

General troubleshooting steps and essential checks before and during test runs.

Self-Diagnosis Procedures

Instructions for initiating and performing self-diagnosis to identify unit malfunctions.

Diagnostic Action Tables and Symptom Resolution

Detailed tables linking error codes and symptoms to specific actions and judgments.

Component Testing

Methods for checking the resistance and function of various unit parts.

Easy Maintenance Function

Maintenance Mode Operation

Step-by-step guide for entering and utilizing the maintenance mode for inspection.

Operation Condition Analysis

A guide to interpret operation conditions based on temperature data and analysis.

Function Setting

Remote Controller Function Settings

Procedures for setting unit functions using the wired remote controller.

Wireless Remote Controller Function Selection

Instructions for configuring functions using the wireless remote controller.

Monitoring Operation Data by Remote Controller

Operation Data Monitoring Guide

Instructions on how to monitor real-time operational data via the remote controller.

Request Code List for Data Monitoring

A comprehensive list of request codes used for retrieving specific operational data.

Disassembly Procedure

Removing Exterior Panels and Fan Motor

Steps to remove outer panels, service panel, and the fan motor assembly.

Accessing and Removing Electrical Components

Procedures for removing the electrical parts box, thermistors, and valves.

Disassembly of Major Components

Steps for removing the compressor, accumulator, reactor, and switches.

Parts List (non-RoHS compliant)

Structural Parts Identification

Lists and diagrams of the unit's structural components by model.

Functional Parts Identification

Lists and diagrams of the unit's functional components by model.

RoHS Parts List (RoHS compliant)