Mitsubishi Electric PUZ-WM85YAA User Manual

SERVICE MANUAL
No. OCH727
R32
March 2020
PARTS CATALOG (OCB727)
<Outdoor unit>
[Model Name]
PUZ-WM50VHA
PUZ-WM60VAA
PUZ-WM85VAA
PUZ-WM85YAA
PUZ-WM112VAA
PUZ-WM112YAA
Salt proof model
PUZ-WM50VHA-BS
PUZ-WM60VAA-BS
PUZ-WM85VAA-BS
PUZ-WM85YAA-BS
PUZ-WM112VAA-BS
PUZ-WM112YAA-BS
CONTENTS
1. REFERENCE MANUAL ································ 2
2. SAFETY PRECAUTION ······························· 3
3. SPECIFICATIONS ······································ 10
4. DATA ··························································· 12
5. OUTLINES AND DIMENSIONS·················· 13
6. WIRING DIAGRAM ····································· 15
7. WIRING SPECIFICATIONS ························ 18
8. REFRIGERANT SYSTEM DIAGRAM ········ 19
9. TROUBLESHOOTING ································ 22
10. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···· 60
11. DISASSEMBLY PROCEDURE ··················· 66
Note:
• This manual describes
service data of the outdoor
units only.
AIR TO WATER HEAT PUMP UNITS
[Service Ref.]
PUZ-WM50VHA.UK
PUZ-WM60VAA.UK
PUZ-WM85VAA.UK
PUZ-WM85YAA.UK
PUZ-WM112VAA.UK
PUZ-WM112YAA.UK
PUZ-WM50VHA-BS.UK
PUZ-WM60VAA-BS.UK
PUZ-WM85VAA-BS.UK
PUZ-WM85YAA-BS.UK
PUZ-WM112VAA-BS.UK
PUZ-WM112YAA-BS.UK
PUZ-WM50VHA.UK

Mitsubishi Electric PUZ-WM85YAA Specifications

General

Brand	Mitsubishi Electric
Model	PUZ-WM85YAA
Category	Heat Pump
Language	English

Summary

Reference Manual: Air to Water System

Indoor Unit Service Information

Lists indoor unit service manuals for air to water systems, referencing models and service manual numbers.

Safety Precautions

Always Observe for Safety

Ensures all supply circuits are disconnected before accessing terminals for safety.

Cautions Related to New Refrigerant

Provides crucial safety guidelines for handling refrigerant, especially R32.

Specifications: Outdoor Unit Details

Data: Noise Criterion Curves

Outlines and Dimensions: Installation Space

Wiring Diagram: PUZ-WM50VHA Series

Wiring Specifications: Field Electrical Wiring

Refrigerant System Diagram

Troubleshooting Guide

Troubleshooting Summary

Provides an overview of troubleshooting actions based on whether a trouble is reoccurring or not.

Self-Diagnosis Action Table

Lists check codes, abnormal points, causes, and recommended actions for troubleshooting.

Troubleshooting of Problems

Details common phenomena, their factors, and countermeasures for operational issues.

Operation Data Monitoring via Remote Controller

Disassembly Procedure: Panels and Fan Motor

Removing the Electrical Parts Box

Procedure for safely removing the electrical parts box containing key electronic components.