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Mitsubishi Electric CITY MULTI PKFY-P06NBMU-E2 User Manual

Mitsubishi Electric CITY MULTI PKFY-P06NBMU-E2
34 pages
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TECHNICAL & SERVICE MANUAL
CONTENTS
TECHNICAL CHANGES
.............................
2
1. SAFETY PRECAUTION
..........................
2
2. PARTS NAMES AND FUNCTIONS
........
3
3. SPECIFICATION
...................................
10
4. OUTLINES AND DIMENSIONS
............
13
5. WIRING DIAGRAM
...............................
14
6. REFRIGERANT SYSTEM DIAGRAM
........
15
7. MICROPROCESSOR CONTROL
.........
16
8. TROUBLESHOOTING
..........................
22
9. DISASSEMBLY PROCEDURE
.............
29
Indoor unit
[Model Name] [Service Ref.]
PKFY-P06NBMU-E2
PKFY-P06NBMU-E2R1
R410A
Revision:
Added
PKFY-P06NBMU-E2R1 in
REVISED EDITION-B.
Some descriptions have
been modified.
PARTS CATALOG (OCB516)
INDOOR UNIT
Model name
indication
PKFY-P06NBMU-E2
Notes:
This manual describes only
service data of the indoor
units.
RoHS compliant products
have <G> mark on the
spec name plate.
OCH516 REVISED EDITION-A
is void.
July 2016
No. OCH516
REVISED EDITION-B
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
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Mitsubishi Electric CITY MULTI PKFY-P06NBMU-E2 Specifications

General IconGeneral
SeriesCITY MULTI
RefrigerantR410A
ModelPKFY-P06NBMU-E2
Power Supply220-240 V, 50 Hz
Weight10 kg

Summary

Safety Precautions for Refrigerant Handling

New Refrigerant Handling Cautions

Provides essential safety warnings and precautions when handling new refrigerants like R410A.

General Handling and Usage Warnings

Encompasses warnings on tool care, avoiding charging cylinders, and room ventilation.

Parts Names and Functions

PAR-32MAA Wired Remote Controller

Button Functions and Display Elements

Explains the purpose of each button and the LCD display on the PAR-32MAA remote.

Main Menu Settings and Functions

PAC-YT53CRAU Wired Remote Controller

PAC-YT53CRAU Buttons and Display

Explains the layout, buttons, and display section of the PAC-YT53CRAU remote.

Wiring Diagram

Refrigerant System Diagram

Microprocessor Control Operations

7-1. Cool Operation Control

Explains the control logic and operation during the COOL mode.

Dry Operation Control

7-2. Dry Operation Control

Details the control logic and operation specific to the DRY mode.

Fan Operation Control

Heat Operation Control

7-4. Heat Operation Control

Explains the control logic and operation specifically for the HEAT mode.

Auto Operation Control

7-5. Auto Operation Control

Details automatic mode switching between COOL and HEAT based on conditions.

Troubleshooting

8-1. How to Check Parts

Provides guidance on checking the resistance of internal components for diagnosis.

Thermistor and Expansion Valve Checks

8-1-1. Thermistor Characteristics

Explains thermistor behavior and provides characteristic graphs and resistance values.

8-1-2. Linear Expansion Valve Operation

Details the valve's function, control signals, and connection diagram.

Linear Expansion Valve Troubleshooting

DIP Switch Functions

SW1 Mode Selection Functionality

Configures settings like thermistor detection, filter signs, and remote indication.

SW2 Capacity and SW3 Function Selection

Sets unit capacity and selects various functions like louvers and heating.

Address and Pairing Settings

Test Point Diagrams

8-3-1. Indoor Controller Board Test Points

Identifies connectors, test points, and voltage ranges on the controller board.

Board Layouts for Troubleshooting

Disassembly Procedure

1. Removing Lower Unit from Installation Plate

Details the initial steps to detach the indoor unit from its mounting plate.

2. Removing the Front Panel

Guides the user on how to safely remove the front panel of the indoor unit.

Component Removal Procedures

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