Mitsubishi Electric CITY MULTI PFFY Series User Manual

TECHNICAL & SERVICE MANUAL
Air-Conditioners For Building Application
<Indoor unit>
2014
Models
PFFY-P06NRMU-E,PFFY-P08NRMU-E
PFFY-P12NRMU-E,PFFY-P15NRMU-E
PFFY-P18NRMU-E,PFFY-P24NRMU-E
PFFY-P06NEMU-E,PFFY-P08NEMU-E
PFFY-P12NEMU-E,PFFY-P15NEMU-E
PFFY-P18NEMU-E,PFFY-P24NEMU-E
CONTENTS
SAFETY PRECAUTIONS ·························1
1. FEATURES ···········································3
2. PART NAMES AND FUNCTIONS ········4
3. SPECIFICATION ···································6
4. OUTLINES AND DIMENSIONS············8
5. WIRING DIAGRAM ·····························10
6. REFRIGERANT SYSTEM DIAGRAM ····11
7. TROUBLE SHOOTING·······················12
8. DISASSEMBLY PROCEDURE···········
17
Floor Standing Type
Series PFFY
For use with the R410A & R22
Exposed type
Concealed type

Mitsubishi Electric CITY MULTI PFFY Series Specifications

General

Series	PFFY
Type	Ceiling Concealed Duct
Refrigerant	R410A
Power Supply	220-240V, 50Hz
Indoor Unit Options	Wired controller, Wireless controller, Centralized controller
Operating Temperature (Cooling)	-5°C to 46°C

Summary

SAFETY PRECAUTIONS

Installation and Electric Work Safety

Safety guidelines for installation, electric work, and general handling.

Refrigerant Leak Safety

Procedures and warnings related to refrigerant gas leaks during operation.

Precautions for R410A Refrigerant

R410A Refrigerant Handling and Tool Usage

Guidelines for using R410A refrigerant, piping, oil, and specific tools.

2 PART NAMES AND FUNCTIONS

Indoor Unit and Remote Controller Components

5 WIRING DIAGRAM

Control Box Wiring and Symbol Explanations

7 TROUBLE SHOOTING

Component Diagnostic Checks

Procedures for checking key components like thermistors, transformers, and fan motors.

Linear Expansion Valve Troubleshooting

7-2. Setting of Address Switch

Indoor Unit Address Configuration

7-3. Function of Dip-switch

Dip-switch Functionality and Settings

Explanation of various dip-switch functions for mode, capacity, voltage, and unit selection.