Mitsubishi Electric PSA-M100KA-ER User Manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
[Service Ref.]
PSA-M71KA
PSA-M100KA
PSA-M125KA
PSA-M140KA
PSA-M71KA-ER
PSA-M100KA-ER
PSA-M125KA-ER
PSA-M140KA-ER
PSA-M71KA-ET
PSA-M100KA-ET
PSA-M125KA-ET
PSA-M140KA-ET
September 2021
R32/R410A
Notes:
• This manual describes only
service data of the indoor
units.
PARTS CATALOG (OCB724)
Model name
indication
No. OCH724
CONTENTS
1. REFERENCE MANUAL ·······················2
2. SAFETY PRECAUTION ·······················2
3. PARTS NAMES AND FUNCTIONS ········9
4. SPECIFICATIONS ···························· 10
5. NOISE CRITERION CURVES ············· 12
6. OUTLINES AND DIMENSIONS ··········· 13
7. WIRING DIAGRAM ··························· 14
8. REFRIGERANT SYSTEM DIAGRAM ··· 15
9. TROUBLESHOOTING ······················· 16
10. SPECIAL FUNCTION ························ 27
11. DISASSEMBLY PROCEDURE ············ 29
12. REMOTE CONTROLLER ··················· 34
Indoor unit
[Model Name]
PSA-M71KA
PSA-M100KA
PSA-M125KA
PSA-M140KA
PSA-M71KA-ER
PSA-M100KA-ER
PSA-M125KA-ER
PSA-M140KA-ER
PSA-M71KA-ET
PSA-M100KA-ET
PSA-M125KA-ET
PSA-M140KA-ET

Mitsubishi Electric PSA-M100KA-ER Specifications

General

Type	Heat Pump
Cooling Capacity (kW)	10.0
Heating Capacity (kW)	11.2
Power Source	Electric
Refrigerant	R410A
Sound Pressure Level (Outdoor)	55 dB(A)
Net Weight (Outdoor)	120 kg
Power Supply	380-415V, 3Ph, 50Hz

Summary

REFERENCE MANUAL

OUTDOOR UNIT'S SERVICE MANUAL

SAFETY PRECAUTION

UNIT SAFETY SYMBOLS

Explains the meaning of symbols used on the unit for safety.

GENERAL SAFETY OBSERVANCE

REFRIGERANT HANDLING CAUTIONS

Detailed cautions for handling refrigerant (R32/R410A).

SERVICE OPERATION WARNINGS

Critical warnings and precautions for performing service on the unit.

TECHNICAL SPECIFICATIONS

ELECTRICAL WIRING DIAGRAM

REFRIGERANT SYSTEM OVERVIEW

TROUBLESHOOTING PROCEDURES

TROUBLESHOOTING SUMMARY

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

DIAGNOSIS VIA REMOTE CONTROLLER

SELF-DIAGNOSIS ACTION TABLE

Lists check codes, causes, and countermeasures for unit malfunctions.

TROUBLESHOOTING BY PHENOMENA

Addresses troubleshooting for specific inferior phenomena and LED indicators.

PART CHECK PROCEDURES

DC FAN MOTOR & CONTROLLER CHECK

TEST POINT DIAGRAM

SPECIAL OPERATING FUNCTIONS

DISASSEMBLY AND REPLACEMENT GUIDE

REMOVING THE INDOOR CONTROLLER BOARD

REMOVING THE R32 SENSOR

REMOVING THE INDOOR FAN AND MOTOR

REMOVING THE INDOOR HEAT EXCHANGER

REMOTE CONTROLLER OPERATION

REMOTE CONTROLLER FUNCTIONS OVERVIEW

ERROR INFORMATION DISPLAY

Describes how to view and reset error codes displayed on the remote controller.

ACCESSING THE SERVICE MENU

Guides on accessing and navigating the service menu with password.

PERFORMING TEST RUNS

UNIT SELF-DIAGNOSIS

Guides on performing self-diagnosis and resetting error history.