Mitsubishi Electric PLFY-P15NFMU-E User Manual

Indoor unit
[Model Name] [Service Ref.]
PLFY-P05NFMU-E.TH
PLFY-P08NFMU-E.TH
PLFY-P12NFMU-E.TH
PLFY-P15NFMU-E.TH
PLFY-P18NFMU-E.TH
PLFY-P05NFMU-E
PLFY-P08NFMU-E
PLFY-P12NFMU-E
PLFY-P15NFMU-E
PLFY-P18NFMU-E
R410A
TECHNICAL & SERVICE MANUAL
March 2018
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CONTENTS
1. SAFETY PRECAUTION
..........................
2
2. PARTS NAMES AND FUNCTIONS
........
4
3. SPECIFICATIONS
.................................
12
4. 4-WAY AIR FLOW SYSTEM
.................
14
5. OUTLINES AND DIMENSIONS
............
16
6. WIRING DIAGRAM
...............................
17
7.
REFRIGERANT SYSTEM DIAGRAM
......
18
8. TROUBLESHOOTING
..........................
19
9. DISASSEMBLY PROCEDURE
.............
27
PARTS CATALOG (OCB604)

Mitsubishi Electric PLFY-P15NFMU-E Specifications

General

Brand	Mitsubishi Electric
Model	PLFY-P15NFMU-E
Category	Air Conditioner
Language	English

Summary

SAFETY PRECAUTIONS

Cautions for R410A Refrigerant Handling

Safety guidelines for handling R410A refrigerant and associated tools.

Proper Tools for R410A Refrigerant Service

Lists essential tools specifically designed for R410A refrigerant.

Refrigerant Charging Procedures

Instructions on correct refrigerant charging and cylinder usage.

Use of Specified Refrigerant Only

Emphasizes using only the designated refrigerant type for safety and performance.

Refrigerant Leak Safety Procedures

Guidelines for ventilation and safety during refrigerant leaks.

UNIT SPECIFICATIONS

Comparative Model Specifications

Electrical Parts Specifications

ELECTRICAL WIRING DIAGRAMS

Indoor Unit Wiring Connections

REFRIGERANT SYSTEM FLOW

Refrigerant System Component Diagram

TROUBLESHOOTING AND DIAGNOSTICS

Error Code Troubleshooting Guide

Lists error codes, their causes, and recommended troubleshooting actions.

Component Testing and Verification

Provides methods to test key internal parts like thermistors, motors, and pumps.

Linear Expansion Valve (LEV) Diagnostics

Explains LEV operation, characteristics, and troubleshooting steps.

DC Fan Motor and Controller Troubleshooting

Provides a flowchart for diagnosing issues with the DC fan motor and controller.

DIP Switch Configuration and Functionality

Indoor Controller Board Test Points Diagram