Mitsubishi PUHZ-SHW112YAA User Manual

SERVICE MANUAL
No. OCH651
R410A
May 2017
PARTS CATALOG (OCB651)
[Model Name]
PUHZ-SHW80VAA
PUHZ-SHW112VAA
PUHZ-SHW80YAA
PUHZ-SHW112YAA
PUHZ-SW75VAA
PUHZ-SW100VAA
PUHZ-SW75YAA
PUHZ-SW100YAA
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 ····························································· 9
5. OUTLINES AND DIMENSIONS·················· 11
6. WIRING DIAGRAM ····································· 12
7. WIRING SPECIFICATIONS ························ 16
8. REFRIGERANT SYSTEM DIAGRAM ········ 17
9. TROUBLESHOOTING ································ 20
10.
MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···· 59
11. DISASSEMBLY PROCEDURE ··················· 65
Note:
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[Service Ref.]
PUHZ-SHW80VAA.UK
PUHZ-SHW112VAA.UK
PUHZ-SHW80Y
AA.UK
PUHZ-SHW112YAA.UK
PUHZ-SW75VAA.UK
PUHZ-SW100VAA.UK
PUHZ-SW75YAA.UK
PUHZ-SW100YAA.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
PUHZ-SHW80Y
AA.UK
PUHZ-SHW80Y
PUHZ-SHW80Y
PUHZ-SHW1
12YAA.UK

Mitsubishi PUHZ-SHW112YAA Specifications

General

Brand	Mitsubishi
Model	PUHZ-SHW112YAA
Category	Air Conditioner
Language	English

Summary

1 REFERENCE MANUAL

1-1. FOR AIR TO WATER SYSTEM

Lists models and service references for air-to-water systems.

2 SAFETY PRECAUTION

2-1. ALWAYS OBSERVE FOR SAFETY

Essential safety guidelines before and during repair services.

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

Specific precautions for handling R410A refrigerant and piping.

[1] Cautions for service

Key service procedures and precautions for refrigerant handling.

[2] Additional refrigerant charge

[3] Service tools

2-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES

Procedure and considerations for reusing existing R22 refrigerant pipes.

4 DATA

4-1. REFILLING REFRIGERANT CHARGE (R410A: kg)

Recommended refrigerant charge quantities based on piping length.

4-2. COMPRESSOR TECHNICAL DATA

7 WIRING SPECIFICATIONS

FIELD ELECTRICAL WIRING (power wiring specifications)

Guidelines for electrical wiring, including cable sizes and connections.

8 REFRIGERANT SYSTEM DIAGRAM

8-1. REFRIGERANT COLLECTING (PUMP DOWN)

Step-by-step procedure for safely collecting refrigerant from the system.

9 TROUBLESHOOTING

9-1. TROUBLESHOOTING

General approach to diagnosing and resolving unit issues based on check codes.

9-2. SELF-DIAGNOSIS ACTION TABLE

Detailed table of error codes, causes, and corrective actions for self-diagnosis.

9-3. TROUBLESHOOTING OF PROBLEMS

Guide to troubleshooting common operational phenomena and remote controller issues.

11 DISASSEMBLY PROCEDURE

OPERATING PROCEDURE

Step-by-step instructions for disassembling various components of the unit.

1. Removing the service panel and top panel

2. Removing the fan motor (MF1)

3. Removing the electrical parts box

12. Removing the compressor (MC)