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Mitsubishi Electric PUMY-P36NKMU3 User Manual

Mitsubishi Electric PUMY-P36NKMU3
156 pages
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TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT
No. OCH733
HFC
utilized
R410A
February 2020
Note:
This service manual
describes technical data of
the outdoor units only.
<Outdoor unit>
[Model Name]
Model name
indication
PARTS CATALOG (OCB733)
PUMY-P36NKMU3
PUMY-P48NKMU3
PUMY-P60NKMU3
PUMY-HP36NKMU1
PUMY-HP48NKMU1
PUMY-P36NKMU3-BS
PUMY-P48NKMU3-BS
PUMY-P60NKMU3-BS
Salt proof model
PUMY-P36NKMU3
PUMY-P48NKMU3
PUMY-P60NKMU3
PUMY-HP36NKMU1
PUMY-HP48NKMU1
PUMY-P36NKMU3-BS
PUMY-P48NKMU3-BS
PUMY-P60NKMU3-BS
[Service Ref.]
CONTENTS
1. SAFETY PRECAUTION
.....................................
2
2. OVERVIEW OF UNITS
.......................................
5
3. SPECIFICATIONS
............................................
10
4. DATA
.................................................................
12
5. OUTLINES AND DIMENSIONS
.......................
32
6. WIRING DIAGRAM
...........................................
33
7.
NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION
.......
36
8. TROUBLESHOOTING
......................................
47
9. ELECTRICAL WIRING
...................................
125
10. REFRIGERANT PIPING TASKS
....................
130
11. DISASSEMBLY PROCEDURE
.......................
137
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

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Mitsubishi Electric PUMY-P36NKMU3 Specifications

General IconGeneral
RefrigerantR410A
Outdoor Unit Noise Level58 dB(A)
SeriesPUMY
HSPF3.80
Dimensions (Indoor Unit)200 mm
Coefficient of Performance (Heating)4.0

Summary

SAFETY PRECAUTIONS

ALWAYS OBSERVE FOR SAFETY

Essential safety practices before and during repair service.

CAUTIONS RELATED TO NEW REFRIGERANT

Guidelines for using R410A refrigerant and necessary tools.

PRECAUTIONS FOR SALT PROOF TYPE "-BS" MODEL

Specific installation and maintenance advice for salt-proof models.

OVERVIEW OF UNITS

Auxiliary HEATING ON/OFF CONTROL SET-UP

Configuration for auxiliary heating function and indoor fan speed during defrost.

SYSTEM SPECIFICATIONS

Method for identifying MULTI-S model

Explanation of how to identify MULTI-S model outdoor units based on their naming convention.

Operating temperature range

Specifies the operational temperature limits for cooling and heating modes.

DATA

SELECTION OF COOLING/HEATING UNITS

Flowchart and method for selecting compatible indoor and outdoor units based on capacity.

CORRECTION BY TEMPERATURE

Charts for adjusting cooling/heating capacity based on temperature variations.

STANDARD OPERATION DATA (REFERENCE DATA)

Provides reference data for standard operation conditions of various models.

STANDARD CAPACITY DIAGRAM

Diagrams for calculating system capacity based on total indoor unit capacity.

CORRECTING CAPACITY FOR CHANGES IN THE LENGTH OF REFRIGERANT PIPING

Curves for adjusting capacity based on equivalent piping length.

NOISE CRITERION CURVES

Octave band sound pressure levels for different models during cooling and heating.

NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION

TRANSMISSION SYSTEM SETUP

Guidelines for setting up the transmission system, including wiring and address settings.

REFRIGERANT SYSTEM DIAGRAM

Diagrams illustrating the refrigerant flow and components of the system.

SYSTEM CONTROL

Examples of M-NET and MA remote controller system configurations and address settings.

TROUBLESHOOTING

CHECKPOINTS FOR TEST RUN

Procedures and checks to perform before conducting a test run of the system.

Countermeasures For Error During Test Run

Lists error codes and their corresponding causes and corrective measures.

SELF-DIAGNOSIS ACTION BY FLOWCHART

Flowcharts for diagnosing specific system errors using self-diagnosis functions.

THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE (EMERGENCY)

Lists normal system behaviors that may appear as errors but are not actual malfunctions.

INTERNAL SWITCH FUNCTION TABLE

Table detailing the functions of internal switches on the outdoor unit for various settings.

OUTDOOR UNIT INPUT/OUTPUT CONNECTOR

Diagrams and descriptions of connectors and their functions on the outdoor unit.

HOW TO CHECK THE PARTS

Guides on checking the resistance and specifications of individual components.

TEST POINT DIAGRAM

Diagrams showing test points for diagnosing electrical issues on various circuit boards.

OUTDOOR UNIT FUNCTIONS

Table explaining the display modes and functions related to diagnostic codes and unit status.

ELECTRICAL WIRING

OVERVIEW OF POWER WIRING

General notes and precautions regarding power wiring for the system.

WIRING OF MAIN POWER SUPPLY AND EQUIPMENT CAPACITY

Wiring diagrams and specifications for main power supply and capacity calculations.

DESIGN FOR CONTROL WIRING

Information on selection and types of control wires for remote controllers and system linking.

WIRING TRANSMISSION CABLES

Details on the types and specifications of transmission cables used for system communication.

SYSTEM SWITCH SETTING

Explanation of system switch settings for identifying unit destinations and addresses.

EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM

A basic wiring diagram illustrating a system using an M-NET controller.

METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A CAPACITY AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY

Procedures for calculating electrical characteristics for power company agreements.

REFRIGERANT PIPING TASKS

REFRIGERANT PIPING SYSTEM

Details on refrigerant piping system design, including length, diameter, and branch kits.

PRECAUTIONS AGAINST REFRIGERANT LEAKAGE

Guidelines and procedures to prevent refrigerant leakage and ensure safe concentration levels.

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