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Mitsubishi Electric PUHZ-HW112YHA2 User Manual

Mitsubishi Electric PUHZ-HW112YHA2
120 pages
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SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES
..................................
3
2. SAFETY PRECAUTION
...................................
5
3. SPECIFICATIONS
............................................
8
4. DATA
.............................................................
31
5. OUTLINES AND DIMENSIONS
.....................
34
6. WIRING DIAGRAM
........................................
37
7. WIRING SPECIFICATIONS
...........................
49
8. REFRIGERANT SYSTEM DIAGRAM
...............
50
9. TROUBLESHOOTING
...................................
52
10. DISASSEMBLY PROCEDURE
....................
103
Notes:
This manual describes service
data of outdoor unit only.
R410A
[Model Name]
PUHZ-W50VHA
PUHZ-W85VHA
PUHZ-HW112YHA
PUHZ-HW112YHA2
PUHZ-HW140VHA
PUHZ-HW140YHA
PUHZ-HW140VHA2
PUHZ-HW140YHA2
PUHZ-W85VHA(R1)
PUHZ-W85VHA(R1)-BS
PARTS CATALOG (OCB439)
OCH439 REVISED EDITION-L
is void.
PUHZ-W50VHA-BS
PUHZ-W85VHA-BS
PUHZ-HW112YHA-BS
PUHZ-HW112YHA2-BS
PUHZ-HW140VHA-BS
PUHZ-HW140YHA-BS
PUHZ-HW140VHA2-BS
PUHZ-HW140YHA2-BS
[Service Ref.]
Refer to page 2.
SPLIT-TYPE, AIR TO WATER HEAT PUMP
No. OCH439
REVISED EDITION-M
April 2019
Revision:
• Added
PUHZ-HW112YHA2R7,
PUHZ-HW112YHA2R7-BS,
PUHZ-HW140VHA2R7,
PUHZ-HW140VHA2R7-BS,
PUHZ-HW140YHA2R7 and
PUHZ-HW140YHA2R7-BS in
REVISED EDITION-M.
Some descriptions have been
modified.

Questions and Answers:

Mitsubishi Electric PUHZ-HW112YHA2 Specifications

General IconGeneral
ModelPUHZ-HW112YHA2
ManufacturerMitsubishi Electric
Cooling Capacity11.2 kW
RefrigerantR410A
Sound Pressure Level Heating (dB(A))52
TypeAir Source Heat Pump
Operating Range Heating (°C)-20 to 21

Summary

Technical Changes and Revisions

Safety Precautions for Operation and Maintenance

General Safety Observances

Key safety rules to follow before and during repair services.

Refrigerant Handling and Tool Safety

Precautions for R410A refrigerant use and specialized tools.

Outdoor Unit Specifications

Electrical Wiring Diagrams and Specifications

Refrigerant System Overview

Troubleshooting and Diagnostics

Troubleshooting Procedures and Test Runs

Guidance on identifying and resolving operational issues and test run checks.

Self-Diagnosis and Error Code Reference

Table of error codes, causes, and recommended actions for troubleshooting.

Component Testing Methods

Procedures for checking electrical and mechanical components for faults.

Disassembly Procedures for Unit Components

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