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Mitsubishi Electric City Multi Series PCFY-P36NKMU-E User Manual

Mitsubishi Electric City Multi Series PCFY-P36NKMU-E
36 pages
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TECHNICAL & SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES
.........................
2
2. PART NAMES AND FUNCTIONS
..........
2
3. SPECIFICATION
.....................................
4
4. OUTLINES AND DIMENSIONS
..............
8
5. WIRING DIAGRAM
...............................
11
6. REFRIGERANT SYSTEM DIAGRAM
........
13
7. MICROPROCESSOR CONTROL
...............
14
8. TROUBLESHOOTING
..........................
21
9. DISASSEMBLY PROCEDURE
.............
30
Indoor unit
[Model names] [Service Ref.]
No. OCH500
REVISED EDITION-A
INDOOR UNIT
R22R410A
Note:
This manual describes only
service data of the indoor
units.
RoHS compliant products
have <G> mark on the spec
name plate.
April 2012
PARTS CATALOG (OCB500)
Model name
indication
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
PCFY-P15NKMU-E
PCFY-P24NKMU-E
PCFY-P30NKMU-E
PCFY-P36NKMU-E
PCFY-P15NKMU-E.TH
PCFY-P15NKMU-ER1.TH
PCFY-P24NKMU-E.TH
PCFY-P24NKMU-ER1.TH
PCFY-P30NKMU-E.TH
PCFY-P30NKMU-ER1.TH
PCFY-P36NKMU-E.TH
PCFY-P36NKMU-ER1.TH
Revision:
PCFY-P15/24/30/36NKMU-
ER1 have been added in
REVISED EDITION-A.
• Some descriptions have
been modified.
• Please void OCH500.
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Mitsubishi Electric City Multi Series PCFY-P36NKMU-E Specifications

General IconGeneral
BrandMitsubishi Electric
ModelCity Multi Series PCFY-P36NKMU-E
CategoryAir Conditioner
LanguageEnglish

Summary

Technical Changes

Part Names and Functions

Indoor Unit Components

Identifies and describes the key components of the indoor unit.

Specifications

Outlines and Dimensions

PCFY-P15NKMU-E.TH / ER1.TH Dimensions

Dimensional and connection details for specific models.

PCFY-P24NKMU-E.TH / ER1.TH Dimensions

Dimensional and connection details for specific models.

PCFY-P30/36NKMU-E.TH / ER1.TH Dimensions

Dimensional and connection details for specific models.

Wiring Diagram

Refrigerant System Diagram

Microprocessor Control

Cool Operation

Details thermostat and fan control logic during cooling mode.

Dry Operation

Explains thermostat, fan, and drain pump control in dry mode.

Fan Operation

Describes fan speed control and drain pump operation in fan-only mode.

Heat Operation

Details thermostat, fan, hot adjust, and residual heat modes for heating.

Auto and Stop Operations

Explains automatic mode changes and unit stop procedures.

Troubleshooting

Component Testing Procedures

Guides on how to check thermistors, motors, and switches for faults.

Thermistor and LEV Characteristics

Provides characteristic graphs and operational summaries for thermistors and LEV.

LEV and Fan Motor Diagnosis

Addresses issues with LEV operation, motor noise, and fan motor troubleshooting.

DC Fan Motor Diagnosis

Step-by-step troubleshooting for the DC fan motor.

DIP Switch and Address Settings

Explains DIP switch functions and address board settings for unit configuration.

Disassembly Procedure

Air Intake Grille and Electrical Components Removal

Steps to remove the air intake grille, electrical box, and controller board.

Thermistor and Fan Motor Removal

Procedures for removing the room temperature thermistor and the fan motor assembly.

Side Panel, Fan, and Vane Motor Removal

Instructions for removing side panels, fan assembly, and vane motor.

Under Panel, Drain Pan, and Pipe Thermistor Removal

Steps to remove the under panel, drain pan, and pipe thermistors.

Guide Vane and Auto Vane Removal

Procedures for removing the guide vane and the auto vane assembly.

Heat Exchanger and LEV Removal

Procedures for disassembling the heat exchanger and linear expansion valve.

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