Mitsubishi Electric CITY MULTI PFFY-P18NRMU-E 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-P18NRMU-E Specifications

General

Series	CITY MULTI
Refrigerant	R410A
Sound Level (Outdoor Unit)	48 dB(A)
Power Supply	220-240V, 50Hz
Outdoor Unit Weight	40 kg

Summary

PFFY Floor Standing Type Series

Safety Precautions

Installation and Electrical Safety

Essential safety guidelines and precautions to follow before performing installation and electrical work.

R410A Refrigerant Precautions

Technical Specifications

Component Identification

Detailed Specifications

Wiring Diagram Overview

Refrigerant System Overview

Troubleshooting Guide

Part Inspection Methods

Guides for checking individual components like thermistors, transformers, and fan motors using a tester.

Expansion Valve Operation & Troubleshooting

Address and Dip-Switch Configuration

Setting Indoor Unit Address

Dip-Switch Functionality

Disassembly Procedures

Exposed Type Control Box Removal

Step-by-step guide to removing the control box cover and front panel for the exposed type unit.

Thermistor Removal

Gas & Liquid Piping Thermistor Removal

Fan Motor Removal

Fan Section & Motor Removal

Heat Exchanger Removal

Heat Exchanger Removal Process

Concealed Unit Casing Removal

Concealed Casing & Diffuser Removal