Mitsubishi Electric City Multi PKFY Series User Manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES
.........................
2
2. PART NAMES AND FUNCTIONS
..........
2
3. SPECIFICATION
.....................................
5
4. OUTLINES AND DIMENSIONS
..............
7
5. WIRING DIAGRAM
.................................
8
6. REFRIGERANT SYSTEM DIAGRAM
..........
9
7. MICROPROCESSOR CONTROL
.........
10
8. TROUBLESHOOTING
..........................
15
9. DISASSEMBLY PROCEDURE
.............
23
Indoor unit
[Model names] [Service Ref.]
PKFY-P06NBMU-E
PKFY-P06NBMU-ER1
PKFY-P08NBMU-E
PKFY-P08NBMU-ER1
No. OCH461
REVISED EDITION-B
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R22R410A
Note:
• This manual describes only
service data of the indoor
units.
• RoHS compliant products
have <G> mark on the
spec name plate.
September 2012
PARTS CATALOG (OCB461)
INDOOR UNIT
Model name
indication
PKFY-P06NBMU-E
PKFY-P08NBMU-E
Revision:
• "8-2. Function of Dip
switch" has been modified.
• Some descriptions have
been modified.
• Please void OCH461
REVISED EDITION-A.

Mitsubishi Electric City Multi PKFY Series Specifications

General

Brand	Mitsubishi Electric
Model	City Multi PKFY Series
Category	Air Conditioner
Language	English

Summary

Part Names and Functions

Wireless Remote Controller

Explains the functions and displays of the wireless remote controller.

Wired Remote Controller

Wiring Diagram

Refrigerant System Diagram

Microprocessor Control

Cool Operation

Details the control functions and operation for cooling mode.

Dry Operation

Fan Operation

Heat Operation

Details the control functions and operation for heating mode.

Auto Operation

Troubleshooting

How to Check the Parts

Outlines procedures for testing key components like thermistors and motors.

Function of Dip Switch

Explains the function of various dip switches for unit configuration.

Disassembly Procedure

Removing the Lower Side of the Indoor Unit from the Installation Plate

Removing the Front Panel

Removing the Indoor Controller Board and Indoor Power Board

Removing the Electrical Box

Removing the Line Flow Fan and the Fan Motor

Parts Catalog

RoHS Parts List

Lists all RoHS compliant parts, including panel, heat exchanger, and electrical components.