Mitsubishi Electric City Multi PKFY-P12NHMU-E2 User Manual

TECHNICAL & SERVICE MANUAL
CONTENTS
1. PART NAMES AND FUNCTIONS
..........
2
2. SPECIFICATION
.....................................
5
3. OUTLINES AND DIMENSIONS
..............
7
4. WIRING DIAGRAM
.................................
8
5. REFRIGERANT SYSTEM DIAGRAM
..........
9
6. MICROPROCESSOR CONTROL
.........
10
7. TROUBLESHOOTING
..........................
15
8. DISASSEMBLY PROCEDURE
.............
22
Indoor unit
[Model names] [Service Ref.]
PKFY-P08NHMU-E2
PKFY-P08NHMU-E2
PKFY-P12NHMU-E2
PKFY-P12NHMU-E2
PKFY-P15NHMU-E2
PKFY-P15NHMU-E2
PKFY-P18NHMU-E2
PKFY-P18NHMU-E2
No. OCH515
INDOOR UNIT
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.
April 2012
PARTS CATALOG (OCB515)

Mitsubishi Electric City Multi PKFY-P12NHMU-E2 Specifications

General

Brand	Mitsubishi Electric
Model	City Multi PKFY-P12NHMU-E2
Category	Air Conditioner
Language	English

Summary

SPECIFICATIONS

General Unit Specifications

Lists power, capacity, dimensions, weight, and heat exchanger details.

MICROPROCESSOR CONTROL

Cool Operation Control

Details thermostat, anti-freezing, and fan/vane control during cooling.

Dry Operation Control

Explains thermostat, fan, and vane control during dry mode.

Fan Operation Control

Describes fan speed and vane control settings for fan-only mode.

Heat Operation Control

Covers thermostat, fan, and vane control during heating, including special modes.

Auto Operation Control

Explains automatic switching between cool and heat modes.

TROUBLESHOOTING

Part Checking Procedures

Guides on checking thermistors, motors, and valves using resistance.

Thermistor Resistance Data

Linear Expansion Valve Operation Details