Mitsubishi Electric PUHZ-SW75YAA-SC.UK User Manual

SERVICE MANUAL
No. OCH651
REVISED EDITION-A
R410A
August 2017
Revision:
• Added
PUHZ-SW75VAA-SC.UK and
PUHZ-SW75YAA-SC.UK
in REVISED EDITION-A.
• Some descriptions have
been modified.
PARTS CATALOG (OCB651)
[Model Name]
PUHZ-SHW80VAA
PUHZ-SHW112VAA
PUHZ-SHW80YAA
PUHZ-SHW112YAA
PUHZ-SW75VAA
PUHZ-SW100VAA
PUHZ-SW75YAA
PUHZ-SW100YAA
PUHZ-SW75VAA-SC
PUHZ-SW75YAA-SC
Salt proof model
PUHZ-SHW80VAA-BS
PUHZ-SHW112VAA-BS
PUHZ-SHW80YAA-BS
PUHZ-SHW112YAA-BS
PUHZ-SW75VAA-BS
PUHZ-SW100VAA-BS
PUHZ-SW75YAA-BS
PUHZ-SW100YAA-BS
CONTENTS
1. REFERENCE MANUAL ································ 2
2. SAFETY PRECAUTION ······························· 3
3. SPECIFICATIONS ········································ 7
4. DATA ··························································· 10
5. OUTLINES AND DIMENSIONS·················· 12
6. WIRING DIAGRAM ····································· 13
7. WIRING SPECIFICATIONS ························ 17
8. REFRIGERANT SYSTEM DIAGRAM ········ 18
9. TROUBLESHOOTING ································ 21
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.
• OCH651 is void.
AIR TO WATER HEAT PUMP UNITS
[Service Ref.]
PUHZ-SHW80VAA.UK
PUHZ-SHW112VAA.UK
PUHZ-SHW80YAA.UK
PUHZ-SHW112YAA.UK
PUHZ-SW75VAA.UK
PUHZ-SW100VAA.UK
PUHZ-SW75YAA.UK
PUHZ-SW100YAA.UK
PUHZ-SW75VAA-SC.UK
PUHZ-SW75YAA-SC.UK
PUHZ-SHW80VAA-BS.UK
PUHZ-SHW112VAA-BS.UK
PUHZ-SHW80YAA-BS.UK
PUHZ-SHW112YAA-BS.UK
PUHZ-SW75VAA-BS.UK
PUHZ-SW100VAA-BS.UK
PUHZ-SW75YAA-BS.UK
PUHZ-SW100YAA-BS.UK

Mitsubishi Electric PUHZ-SW75YAA-SC.UK Specifications

General

Brand	Mitsubishi Electric
Model	PUHZ-SW75YAA-SC.UK
Category	Heat Pump
Language	English

Summary

Safety Precautions

Always Observe for Safety

General safety guidelines before and during repair.

Cautions Related to New Refrigerant

Specific precautions for R410A refrigerant handling and tools.

Cautions for Service

Cautions for Refrigerant Piping Work

Refrigerant System Diagram

Refrigerant Collecting (Pump Down)

Step-by-step procedure for refrigerant collection before disposal or relocation.

Troubleshooting

Troubleshooting Summary

Summary of self-diagnosis check codes and actions for recurring/non-recurring issues.

Self-Diagnosis Action Table

Detailed table of check codes, abnormal points, causes, and judgment/actions.

Troubleshooting of Problems

Troubleshooting common phenomena related to remote controllers and unit operation.

How to Check the Parts

How to Check Components

Outdoor Power Circuit Board Inspection

Display Function of Inspection for Outdoor Unit

Disassembly Procedure

Operating Procedure Overview

Step-by-step instructions for disassembling the outdoor unit components.

Removing Service Panel and Top Panel

Instructions for removing the service and top panels of the outdoor unit.

Removing Fan Motor (MF1)

Steps for removing the fan motor unit.

Removing Electrical Parts Box

Detailed steps for removing the electrical parts box.

Disassembling Electrical Parts Box (V Model)

Specific disassembly procedures for the electrical parts box in V models.

Disassembling Electrical Parts Box (Y Model)

Specific disassembly procedures for the electrical parts box in Y models.

Removing Thermistors (TH3, TH4, TH6, TH7, TH33)

Removing Valve Coils, Sensors, and Wiring

Removing 4-Way Valve, LEV, Pressure Switch, and Sensor

Detailed steps for removing the 4-way valve, LEV, pressure switch, and sensor assembly.

Removing the Compressor (MC)

Procedure for removing the compressor unit.

Removing the Receiver

Removing Reactors (Y Model Only)