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Mitsubishi Electric CITY MULTI PEFY Series User Manual

Mitsubishi Electric CITY MULTI PEFY Series
48 pages
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Mitsubishi Electric CITY MULTI PEFY Series Specifications

General IconGeneral
BrandMitsubishi Electric
ModelCITY MULTI PEFY Series
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Precautions

General Safety Precautions

Covers installation, electrical work, and general warnings.

Symbol Explanations

Explains warning and caution symbols used in the manual.

R410A Handling Precautions

Specific safety measures for units using R410A refrigerant.

Features

Series PEFY Ceiling Concealed

Introduces the PEFY Series Ceiling Concealed units.

Part Names and Functions

Indoor Unit Components

Identifies key parts of the indoor unit.

Remote Controller

Describes the remote controller and its buttons.

Remote Controller Display

Explains the icons and modes shown on the remote display.

Specification

Model Specifications

Details cooling/heating capacities, temperature ranges, and power inputs.

Electrical Parts Specifications

Lists specifications for electrical parts like thermistors and motors.

Outlines and Dimensions

PEFY-P36/48 Unit Dimensions

Provides physical dimensions for PEFY-P36 and PEFY-P48 models.

Maintenance Access Requirements

Specifies required space for servicing the unit, including access doors.

PEFY-P72/96 Unit Dimensions

Provides physical dimensions for PEFY-P72 and PEFY-P96 models.

Maintenance Access Requirements (P72/P96)

Specifies required space for servicing larger unit models.

Wiring Diagram

PEFY-P36/48 Wiring Diagram

Illustrates the electrical connections for PEFY-P36 and PEFY-P48 models.

PEFY-P72/96 Wiring Diagram

Illustrates the electrical connections for PEFY-P72 and PEFY-P96 models.

Refrigerant System Diagram

Refrigerant Pipe Size Guide

Shows the refrigerant circuit and pipe sizes for different models.

Troubleshooting

Component Testing Procedures

Outlines checks for thermistors, fan motors, and LEVs.

LEV Operation and Control

Explains how the Linear Expansion Valve (LEV) functions.

LEV Fault Diagnosis and Remedies

Provides troubleshooting steps for LEV issues and potential solutions.

Drain Pump and Float Switch Checks

Covers checks for drain pump and float switch malfunctions.

Fan Motor Troubleshooting Steps

Addresses problems with the indoor unit fan not running.

Indoor Unit Address Setting

Details how to set unit addresses using rotary switches.

Control Board Voltage Test Points Identification

Identifies key test points on the control board for voltage checks.

Dip-Switch Settings and Functions

Explains the function and settings of various dip-switches for configuration.

External Static Pressure Adjustment

Describes how to adjust fan speed for different static pressures.

Cold Draft Prevention Feature

Details the function to mitigate cold air discharge during heating.

Rotary Switch Address Setting

Specific guidance on setting unit addresses using rotary switches.

Service Board LED Indicators Explained

Explains the meaning of LED indicators on the service board.

Disassembly Procedure (PEFY-P36, 48NMHU-E-OA)

Control Box Disassembly

Step-by-step guide for disassembling the control box on PEFY-P36/48.

Fan and Motor Disassembly

Steps for removing the fan and motor assembly on PEFY-P36/48.

LEV and Thermistor Removal

Steps for removing LEV and thermistor components on PEFY-P36/48.

Drain Pump Removal

Steps for disassembling the drain pump on PEFY-P36/48.

Heat Exchanger Removal

Steps for removing the heat exchanger on PEFY-P36/48.

Heat Exchanger Removal Continued

Continued steps for heat exchanger removal on PEFY-P36/48.

Control Box Internal Layout

Diagram showing internal components of the control box for PEFY-P36/48.

Thermistor Positions

Shows the positions of thermistors on the PEFY-P36/48 unit.

Disassembly Procedure (PEFY-P72, 96NMHU-E-OA)

Control Box Disassembly

Step-by-step guide for disassembling the control box on PEFY-P72/96.

Fan and Motor Disassembly

Steps for removing the fan and motor assembly on PEFY-P72/96.

Fan and Motor Disassembly Continued

Continued steps for fan/motor removal on PEFY-P72/96.

LEV and Thermistor Removal

Steps for removing LEV and thermistors on PEFY-P72/96.

Drain Pump Removal

Steps for disassembling the drain pump on PEFY-P72/96.

Drain Pump Removal Continued

Continued steps for drain pump removal on PEFY-P72/96.

Heat Exchanger Removal

Steps for removing the heat exchanger on PEFY-P72/96.

Heat Exchanger Removal Continued

Continued steps for heat exchanger removal on PEFY-P72/96.

Control Box Internal Layout

Diagram showing internal components of the control box for PEFY-P72/96.

Thermistor Positions

Shows the positions of thermistors on the PEFY-P72/96 unit.

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