Mitsubishi Electric PKFY-P15NLMU-E User Manual

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.

Mitsubishi Electric PKFY-P15NLMU-E Specifications

General

Brand	Mitsubishi Electric
Model	PKFY-P15NLMU-E
Category	Air Conditioner
Language	English

Summary

SAFETY PRECAUTION

Cautions for service

Important guidelines and procedures for safe service operations.

Additional refrigerant charge

Procedures and cautions for adding refrigerant to the system.

Service tools

Lists essential tools required for servicing R410A refrigerant systems.

MICROPROCESSOR CONTROL

Cool Operation

Explains how to operate the unit in cooling mode using the microprocessor.

Dry Operation

Heat Operation

Explains the operation and control for the heating mode.

Auto Operation

TROUBLESHOOTING

Part Testing Procedures

Guides on how to test specific components for proper functionality.

Thermistor Characteristics and Testing

Details the characteristics and testing procedures for thermistors.

Linear Expansion Valve Troubleshooting

Explains the operation and troubleshooting for the linear expansion valve.

DC Fan Motor Troubleshooting

Test Point Diagrams

DISASSEMBLY PROCEDURE

Removing the Panel

Removing the Electrical Box

Removing Electronic Boards