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Mitsubishi Electric PUMY-P36NKMU4 User Manual

Mitsubishi Electric PUMY-P36NKMU4
190 pages
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TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT
No. OCH811
REVISED EDITION-A
HFC
utilized
R410A
September 2023
Note:
Specifications have been
changed in REVISED
EDITION-A.
<Outdoor unit>
[Model Name]
Model name
indication
PARTS CATALOG (OCB811)
PUMY-P36NKMU4
PUMY-P48NKMU4
PUMY-P60NKMU4
PUMY-HP36NKMU2
PUMY-HP42NKMU2
PUMY-HP48NKMU2
PUMY-P36NKMU4
PUMY-P48NKMU4
PUMY-P60NKMU4
PUMY-HP36NKMU2
PUMY-HP42NKMU2
PUMY-HP48NKMU2
[Service Ref.]
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. SAFETY PRECAUTION ·······················2
2. OVERVIEW OF UNITS ························5
3. SPECIFICATIONS ···························· 11
4. DATA ·············································· 14
5. OUTLINES AND DIMENSIONS ··········· 36
6. WIRING DIAGRAM ··························· 37
7. NECESSARY CONDITIONS
FOR SYSTEM CONSTRUCTION ········· 40
8. TROUBLESHOOTING ······················· 55
9. ELECTRICAL WIRING ·····················133
10. REFRIGERANT PIPING TASKS ·········139
11. DISASSEMBLY PROCEDURE ···········147
12. REMOTE CONTROLLER ··················168
OCH811 is void.
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Mitsubishi Electric PUMY-P36NKMU4 Specifications

General IconGeneral
BrandMitsubishi Electric
ModelPUMY-P36NKMU4
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Precautions

Always Observe for Safety

Essential safety rules to follow before and during repair service.

Cautions for New Refrigerant

Specific precautions for handling R410A refrigerant and related piping.

Overview of Units

Auxiliary Heating ON/OFF Control Setup

Details on setting up auxiliary heating control and indoor fan speed during defrost mode.

System Construction

Information on connectable indoor units and system configuration based on outdoor unit models.

System Specifications

Detailed technical specifications for outdoor units including capacity, power, and dimensions.

Data

Selection of Cooling/Heating Units

Flowchart for determining indoor/outdoor unit capacity based on load and temperature conditions.

Outlines and Dimensions

Wiring Diagram

Model Selection

DIP switch settings for model selection on the outdoor unit's multi-controller board.

Necessary Conditions for System Construction

Transmission System Setup

Details on M-NET cable connections, addresses, and wiring for system setup.

Troubleshooting

Checkpoints for Test Run

Procedures and safety checks to perform before conducting a test run.

Countermeasures for Error During Test Run

Troubleshooting guide for error codes detected during test runs, with corrective actions.

Self-Diagnosis Action by Flowchart

Flowcharts to diagnose and resolve specific errors like serial communication issues.

Electrical Wiring

Overview of Power Wiring

General notes and precautions for power wiring and connections.

Wiring of Main Power Supply and Equipment Capacity

Wiring diagrams and capacity information for main power supply.

Refrigerant Piping Tasks

Refrigerant Piping System

Details on refrigerant piping systems, diameter selection, and branch kits.

Additional Refrigerant Charge

Guidelines for calculating and adding refrigerant for extended piping lengths.

Disassembly Procedure

Removing Service Panels and Fan Motor

Steps to remove exterior panels and the fan motor assembly.

Removing Electrical Parts Box

Procedure for safely disconnecting and removing the electrical parts box.

Removing 4-Way Valve Components

Instructions for removing the 4-way valve coil and related parts.

Removing Major Components (Compressor, Accumulator, Reactor)

Instructions for removing key internal components like compressor and accumulator.

Replacing Fusible Plug and Thermal Protector

Procedure for changing the fusible plug and removing the thermal protector.

Remote Controller

Remote Controller Functions

Explanation of the remote controller interface, buttons, and display icons.

Error Information

How to view and reset error codes displayed on the remote controller.

Test Run

Procedures for performing test runs of cooling, heating, and vane operations.

Self-Diagnosis

Guide to performing self-diagnosis and checking error history via the remote controller.

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