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Mitsubishi Electric PUHZ-W50VHA User Manual

Mitsubishi Electric PUHZ-W50VHA
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.

Other manuals for Mitsubishi Electric PUHZ-W50VHA

Questions and Answers:

Mitsubishi Electric PUHZ-W50VHA Specifications

General IconGeneral
Heating Capacity5.0 kW
Cooling Capacity5.0 kW
Phase1
RefrigerantR410A
Power Supply220-240 V
Noise Level50 dB
SeriesPUHZ
Voltage (V)220-240 V
TypeAir Source Heat Pump

Summary

Technical Changes and Model Updates

Model Series and Component Updates

Changes across various model series and component updates.

HW112YHA/W85VHA Series Updates

Updates for HW112YHA and W85VHA series components.

Safety Precautions

General Safety and R410A Handling

General safety rules and specific cautions for R410A refrigerant.

Service Tools, Piping, and -BS Model Precautions

Required tools, refrigerant piping, and salt-proof model guidelines.

Technical Specifications

W Series Specifications (W50VHA, W85VHA)

Detailed technical specifications for PUHZ-W50VHA and W85VHA models.

HW112YHA Series Specifications

Technical specifications for PUHZ-HW112YHA series models.

HW140VHA/YHA Series Specifications

Technical specifications for PUHZ-HW140VHA and HW140YHA models.

HW112YHA2 Series Specifications

Technical specifications for PUHZ-HW112YHA2 series models.

HW140VHA2/YHA2 Series Specifications

Technical specifications for HW140VHA2 and HW140YHA2 series models.

Available Operating Ranges (Heating & Cooling)

Water flow rate vs. return water temperature for heating and cooling.

Operational Data and Noise Levels

Noise Criterion Curves

Octave band sound pressure levels for various models.

Standard Operation Data

Performance data under standard operating conditions.

Physical Dimensions and Installation

Unit Dimensions and Space Requirements

Diagrams showing unit dimensions and required installation space.

Model-Specific Dimensions

Dimensions for W85VHA, HW112YHA, HW140VHA/YHA series.

Electrical Systems and Diagrams

Wiring Specifications and Refrigerant Diagrams

Guidelines for wiring, refrigerant circuits, and component lists.

Circuit Board Diagrams (Controller, Noise Filter, Power)

Diagrams for controller, noise filter, and power circuit boards.

Circuit Board Diagrams (Converter, Active Filter)

Diagrams for converter circuit boards and active filter module.

Troubleshooting and Diagnostics

Troubleshooting Overview and Test Run Checks

Summary of troubleshooting actions and test run procedures.

Self-Diagnosis Action Table (Power On & Wiring)

Actions for abnormalities detected on power-on and wiring issues.

Self-Diagnosis Action Table (Operation & Component Errors)

Troubleshooting for operational errors and component failures.

Operation Monitoring and DIP Switch Functions

Using SW2 for monitoring and configuring unit settings.

Component Testing Procedures

Thermistor and Sensor Resistance Checks

Methods to check resistance of thermistors and sensors.

Fan Motor, Compressor, and Valve Checks

Procedures for testing fan motors, compressors, and valves.

Linear Expansion Valve Operation and Checks

How linear expansion valves operate and are tested.

Disassembly Procedures

Removing External Panels and Fan Motor

Steps for removing service panel, top panel, and fan motor.

Removing Electrical Components (Boards, Valves, Sensors)

Procedure for removing circuit boards, valves, and sensors.

Removing Major Internal Components (Compressor, Heat Exchanger, Reactors)

Steps for removing compressor, heat exchanger, and reactors.

Disassembling Electrical Parts Box

Procedure for disassembling the electrical parts box.

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