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Mitsubishi Electric PKFY-P18NLMU-E.TH User Manual

Mitsubishi Electric PKFY-P18NLMU-E.TH
38 pages
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TECHNICAL & SERVICE MANUAL
CONTENTS
1. SAFETY PRECAUTION
..........................
2
2. PARTS NAMES AND FUNCTIONS
........
4
3. SPECIFICATION
...................................
12
4. NOISE CRITERION CURVES
...............
15
5. OUTLINES AND DIMENSIONS
............
17
6. WIRING DIAGRAM
...............................
19
7. REFRIGERANT SYSTEM DIAGRAM
........
20
8. MICROPROCESSOR CONTROL
.........
20
9. TROUBLESHOOTING
..........................
27
10. DISASSEMBLY PROCEDURE
...........
35
Indoor unit
[Model Name] [Service Ref.]
INDOOR UNIT
R410A
Model name
indication
PARTS CATALOG (OCB715)
No. OCH715
March 2020
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
PKFY-P04NLMU-E
PKFY-P04NLMU-E.TH
PKFY-P06NLMU-E
PKFY-P06NLMU-E.TH
PKFY-P08NLMU-E
PKFY-P08NLMU-E.TH
PKFY-P12NLMU-E
PKFY-P12NLMU-E.TH
PKFY-P15NLMU-E
PKFY-P15NLMU-E.TH
PKFY-P18NLMU-E
PKFY-P18NLMU-E.TH
Note:
• This manual describes
service data of the indoor
units only.

Table of Contents

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Mitsubishi Electric PKFY-P18NLMU-E.TH Specifications

General IconGeneral
BrandMitsubishi Electric
ModelPKFY-P18NLMU-E.TH
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Precautions and Guidelines

Refrigerant Handling Guidelines

Guidelines for safe and effective refrigerant handling and system preparation.

Service Cautions and Tools

Service Cautions

Important steps and precautions to follow during service procedures.

Remote Controller Interface and Operation

Main Menu Operation Settings

Wireless Remote Controller Details

Specifications

General Specifications (Models P04/P06/P08)

Technical specifications including capacity, power, dimensions, and noise levels for specific models.

General Specifications (Models P12/P15/P18)

Technical specifications including capacity, power, dimensions, and noise levels for additional models.

Electrical Parts Specifications

Details the specifications for various electrical components used in the unit.

Outlines and Dimensions

Dimensions and Installation Clearances (P04/P06/P08)

Detailed physical dimensions and required installation space for specific models.

Dimensions and Installation Clearances (P12/P15/P18)

Detailed physical dimensions and required installation space for additional models.

Wiring Diagram

Indoor Unit Wiring Diagram

Illustrates the electrical connections and wiring for the indoor unit.

Refrigerant System Diagram

Microprocessor Control

Temperature, Fan, and Drain Pump Control

Explains control modes like temperature adjustment, fan speed, drain pump, and vane operation.

Troubleshooting

Checking Unit Parts

Procedures for checking the functionality and resistance of key unit components.

DC Fan Motor Troubleshooting Guide

Step-by-step guide for troubleshooting issues with the DC fan motor.

Linear Expansion Valve Troubleshooting

Troubleshooting steps for issues related to the linear expansion valve.

Indoor Controller Board Test Points

Diagram showing test points on the indoor controller board for diagnosis.

Disassembly Procedure

Panel and Electrical Box Removal

Instructions for safely removing the front panel and corner box components.

Electrical Box Removal Steps

Steps for disconnecting and removing the electrical box.

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