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Mitsubishi Electric City Multi PLFY Series User Manual

Mitsubishi Electric City Multi PLFY Series
48 pages
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TECHNICAL & SERVICE MANUAL
Indoor unit
[Model Name] [Service Ref.]
Grille model
[Model Name]
CONTENTS
1. SAFETY PRECAUTION
........................
2
2. PARTS NAMES AND FUNCTIONS
......
3
3. SPECIFICATIONS
.................................
4
4. 4-WAY AIRFLOW SYSTEM
..................
7
5. OUTLINES AND DIMENSIONS
............
9
6. WIRING DIAGRAM
.............................
10
7.
REFRIGERANT SYSTEM DIAGRAM
....
11
8. MICROPROCESSOR CONTROL
.......
11
9. TROUBLESHOOTING
........................
18
10. DISASSEMBLY PROCEDURE
...........
25
11. REMOTE CONTROLLER
....................
29
PARTS CATALOG (TCB123)
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
INDOOR UNIT
Model name
indication
PLFY-WL04NFMU-E.TH
PLFY-WL06NFMU-E.TH
PLFY-WL08NFMU-E.TH
PLFY-WL12NFMU-E.TH
PLFY-WL15NFMU-E.TH
PLFY-WL04NFMU-E
PLFY-WL06NFMU-E
PLFY-WL08NFMU-E
PLFY-WL12NFMU-E
PLFY-WL15NFMU-E
SLP-18FAU
SLP-18FAEU
No. TCH123
July 2023
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Mitsubishi Electric City Multi PLFY Series Specifications

General IconGeneral
BrandMitsubishi Electric
ModelCity Multi PLFY Series
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Precautions for Air Conditioners

Installation and Electrical Work Safety

General safety instructions for installation and electrical work.

Water Handling Precautions

Specific safety guidelines for units involving water.

Parts Names and Functions

Indoor Unit Components

Identifies components and functions of the indoor unit.

Wired Remote Controller Functions

Details functions and compatibility of wired remote controllers.

Specifications

General Specifications

Technical data and parameters for the indoor units.

Electrical Parts Specifications

Specifications for electrical components used in the units.

Sound Pressure Level

Noise levels measured for the indoor units.

Noise Criterion Curves

Graphs showing sound pressure levels across frequency bands.

4-Way Airflow System

Fresh Air Intake

Details on fresh air intake location and characteristics.

Duct Fan Operation

How to operate the unit with an external duct fan.

Horizontal Vane Adjustment

Procedures for setting and fixing horizontal vanes.

Outlines and Dimensions

Wiring Diagram

Refrigerant System Diagram

Microprocessor Control

Cool Operation

How to operate the unit in cooling mode.

Drying Operation

How to operate the unit in drying mode.

Fan Operation

How to operate the unit in fan-only mode.

Heat Operation

How to operate the unit in heating mode.

Auto Operation

Automatic switching between cooling and heating.

Stopped Unit Control

Operations when the unit is stopped.

Troubleshooting

Part Checking Procedures

Procedures for checking individual components for faults.

DIP Switch Functions

Explanation of DIP switch functions and settings.

Test Point Diagram

Diagram showing test points on the indoor controller board.

Disassembly Procedure

Removing Air Intake Grille and Filter

Steps to remove the air intake grille and filter.

Removing the Panel

Steps to remove the main panel and corner panels.

Removing Electrical Parts

Steps to remove electrical components from the control box.

Removing Thermistors

Steps to remove temperature thermistors.

Removing Drain Pan

Steps to remove the drain pan.

Removing Fan Motor

Steps to remove the fan motor and turbo fan.

Removing Drain Pump and Float Switch

Steps to remove the drain pump and float switch.

Removing Heat Exchanger

Steps to remove the heat exchanger.

Remote Controller

Remote Controller Functions Overview

Explains the functions of the remote controller buttons and display.

Remote Display Modes and Icons

Explains the different display modes and icons on the remote.

Remote Controller Menu Navigation

Overview of the remote controller's menu navigation.

Remote Controller Configuration Options

Configuration options available via the remote controller.

PAC-YT53CRAU Remote Functions

Functions and display of the PAC-YT53CRAU remote controller.

PAR-SL101A-E Remote Functions

Functions and display of the PAR-SL101A-E remote controller.

Error Information

Checking Error Status

Steps to view and understand error information.

Service Menu

Maintenance Password

Procedure to enter the maintenance password.

Test Run

PAR-41MAA Test Run

Test run procedure for PAR-41MAA remote controller.

PAR-SL101A-E Test Run

Test run procedure for PAR-SL101A-E remote controller.

Function Setting

PAR-41MAA Function Setting

Setting unit functions using PAR-41MAA remote.

PAR-SL101A-E Function Setting

Setting unit functions using PAR-SL101A-E remote.

Error History

Deleting Error History

Steps to delete recorded error history.

Self-Diagnosis

PAR-41MAA Self-Diagnosis

Self-diagnosis procedure for PAR-41MAA remote.

PAR-SL101A-E Self-Diagnosis

Self-diagnosis procedure for PAR-SL101A-E remote.

Remote Controller Check

Remote Controller Check Procedure

Procedure to check the remote controller's functionality.

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