Mitsubishi Electric PLA-M140EA2-ET.UK User Manual

SERVICE MANUAL
INDOOR UNIT
PARTS CATALOG (OCB783)
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
Model name
indication for
MAIN UNIT
Model name
indication for GRILLE
Indoor unit
[Model Name] [Service Ref.]
Grille model
[Model Name] [Service Ref.]
PLP-6EA
PLP-6EAE
PLP-6EAL
PLP-6EALE
PLP-6EAJ
PLP-6EAJE
PLP-6EALM2
PLP-6EALME2
PLP-6EAB
PLP-6EA PLP-6EAR1
PLP-6EAE PLP-6EAER1
PLP-6EAL PLP-6EALR1
PLP-6EALE PLP-6EALER1
PLP-6EAJ
PLP-6EAJE
PLP-6EALM2
PLP-6EALME2
PLP-6EAB
R32/R410A
No. OCH783
REVISED EDITION-B
July 2023
CONTENTS
1. REFERENCE MANUAL ·······················2
2. SAFETY PRECAUTION ·······················2
3. PARTS NAMES AND FUNCTIONS ········8
4. SPECIFICATIONS ······························ 9
5. NOISE CRITERION CURVES ············· 12
6. OUTLINES AND DIMENSIONS ··········· 14
7. WIRING DIAGRAM ··························· 15
8. REFRIGERANT SYSTEM DIAGRAM ··· 16
9. TROUBLESHOOTING ······················· 17
10. FUNCTION SETTING ························ 32
11. SPECIAL FUNCTION ························ 33
12. DISASSEMBLY PROCEDURE ············ 37
13. REMOTE CONTROLLER ··················· 44
PLA-M35EA2
PLA-M35EA2-ER
PLA-M35EA2-ET
PLA-M50EA2
PLA-M50EA2-ER
PLA-M50EA2-ET
PLA-M60EA2
PLA-M60EA2-ER
PLA-M60EA2-ET
PLA-M71EA2
PLA-M71EA2-ER
PLA-M71EA2-ET
PLA-M100EA2
PLA-M100EA2-ER
PLA-M100EA2-ET
PLA-M125EA2
PLA-M125EA2-ER
PLA-M125EA2-ET
PLA-M140EA2
PLA-M140EA2-ER
PLA-M140EA2-ET
PLA-M35EA2.UK
PLA-M35EA2-ER.UK
PLA-M35EA2-ET.UK
PLA-M50EA2.UK
PLA-M50EA2-ER.UK
PLA-M50EA2-ET.UK
PLA-M60EA2.UK
PLA-M60EA2-ER.UK
PLA-M60EA2-ET.UK
PLA-M71EA2.UK
PLA-M71EA2-ER.UK
PLA-M71EA2-ET.UK
PLA-M100EA2.UK
PLA-M100EA2-ER.UK
PLA-M100EA2-ET.UK
PLA-M125EA2.UK
PLA-M125EA2-ER.UK
PLA-M125EA2-ET.UK
PLA-M140EA2.UK
PLA-M140EA2-ER.UK
PLA-M140EA2-ET.UK
Revision:
• PLP-6EAB has been added in
REVISED EDITION-B.
OCH783A is void.

Mitsubishi Electric PLA-M140EA2-ET.UK Specifications

General

Brand	Mitsubishi Electric
Model	PLA-M140EA2-ET.UK
Category	Air Conditioner
Language	English

Summary

SAFETY PRECAUTION

MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT

ALWAYS OBSERVE FOR SAFETY

Essential safety rules to follow before accessing any electrical supply.

CAUTIONS RELATED TO NEW REFRIGERANT

Specific safety measures for handling R32/R410A refrigerant during repairs.

WARNING FOR SERVICE

General Warnings and Installation Requirements

Covers unit alteration, installation practices, room space, and general safety.

CAUTIONS FOR SERVICE

Service Procedures and Refrigerant Handling

Guidelines for recovering refrigerant, charging, and using filter driers.

CAUTIONS FOR UNIT USING R32 REFRIGERANT

Safety Checks for Flammable Refrigerants

Emphasizes area checks, fire extinguishers, and ignition source control.

Checks on Refrigeration and Electrical Equipment

Repairs to Sealed Components

Leak Detection Methods and Removal/Evacuation

Charging Procedures and Decommissioning

Decommissioning Procedures

TROUBLESHOOTING

Troubleshooting Overview and Action Table

Summarizes actions for recurring and non-recurring troubles based on check codes.

Malfunction-Diagnosis Method by Remote Controller

Self-Check Output Patterns and Error Codes

Troubleshooting Unit Operation Issues

Table of symptoms, causes, and countermeasures for unit operation problems.

Self-Diagnosis Action Table

Detailed causes and countermeasures for various check codes (P1, P2, P4, P5).

Self-Diagnosis Action Table (Continued)

Details causes and countermeasures for freeze/overheat protection, pipe temperature, and other errors.

Self-Diagnosis Action Table (Cont.)

Explains troubleshooting for fan motor trouble (Pb) and abnormal refrigerant circuits (PL).

TROUBLESHOOTING OF PROBLEMS

LED2 Off and Refrigerant Address Issues

Diagnosing problems when LED2 is off and addressing refrigerant address settings.

LED2 Blinking and Vane Performance Issues

Troubleshooting when LED2 blinks and vane operation failures.

Wireless Remote Controller Receiver Issues

EMERGENCY OPERATION

Emergency Operation Without Wireless Controller

Procedures for operating the unit using emergency buttons on the grille.

Emergency Operation When Wired Controller Fails

Steps to activate emergency operation when the wired remote controller fails.

HOW TO CHECK THE PARTS

Thermistor and Fan Motor Checks

Methods for checking thermistors, vane motors, drain pumps, and float switches.

Thermistor Characteristic Graph and DC Fan Motor Check

Details on thermistor characteristics and DC fan motor operation checks.

FUNCTION SETTING

Unit Function Settings via Remote Controller

Describes how to set functions like filter sign, fan speed, and vane settings.

Setting Indoor Unit Functions (PAR-41MAA)

How to set refrigerant addresses and unit numbers for functions.

Function Setting Details and Notes

Function Selection Procedure (PAR-SL97A-E)

Step-by-step guide for selecting functions using the wireless remote controller.

Function Selection Procedure (PAR-SL101A-E)

Steps for selecting functions using the PAR-SL101A-E wireless remote controller.

SPECIAL FUNCTION

Automatic Filter Elevation Grille Operation

Emergency Operation for Elevation Panel

Procedures for emergency operation if the wireless controller or elevation panel malfunctions.

DISASSEMBLY PROCEDURE

Removing Filter and Air Intake Grille

Step-by-step instructions with photos for removing the filter and grille.

Removing Electrical Box Cover

Removing the Indoor Controller Board (I.B)

Removing the Electrical Box

Removing the Turbo Fan

Removing the Fan Motor (MF)

Removing the Drain Pan

Removing the Drain Pump (DP)

Removing the Heat Exchanger

ERROR INFORMATION

Checking and Resetting Error Information

How to view error details, stop operation, and reset errors using the remote.

SERVICE MENU

Accessing the Service Menu and Password Entry

Steps to access the service menu, including password entry and default settings.

TEST RUN

Performing Test Run (PAR-41MAA)

Instructions for conducting test runs for cooling, heating, and vane checks.

Test Run Procedures (PAR-SL97A-E, PAR-SL101A-E)

Specific test run procedures for different remote controller models.

ROTATION SETTING

Setting Rotation Function and Support Function

ERROR HISTORY

Viewing and Deleting Error History

Procedures for viewing, confirming, and deleting error records.

Viewing and Deleting Preliminary Error History

SELF-DIAGNOSIS

Performing Self-Diagnosis and Resetting Errors

Steps for initiating self-diagnosis, checking for errors, and resetting them.

Malfunction Diagnosis Methods (PAR-SL97A-E, PAR-SL101A-E)

Procedures for diagnosing malfunctions using different remote controller models.

REMOTE CONTROLLER CHECK

Diagnosing Remote Controller Issues