Table Of Contents - Mitsubishi Electric MSZ-HJ25VA Service Manual

Table of Contents

Table Of Contents1
Indoor Unit1
Service Manual1
Preparation Before The Repair Service2
Precautions During The Repair Service2
Technical Changes3
Part Names And Functions4
Specification5
Noise Criteria Curves7
Outlines And Dimensions9
Wiring Diagram10
Refrigerant System Diagram12
Service Functions14
Timer Short Mode14
P.c. Board Modification For Individual Operation14
Auto Restart Function15
How to Disable "AUTO RESTART FUNCTION"15
Microprocessor Control16
Wireless Remote Controller16
Indoor Unit Display Section17
Operation Indicator Lamp17
Cool Operation17
Dry Operation17
Heat Operation18
Auto Vane Operation18
Horizontal Vane18
Vane Motor Drive18
Timer Operation19
Cold Air Prevention In Heat Operation19
Emergency/Test Operation19
3-Minute Time Delay Operation19
Troubleshooting20
Cautions On Troubleshooting20
Take Care Of The Following During Servicing20
Troubleshooting Procedure20
Failure Mode Recall Function21
Indoor Unit Failure Mode Table22
Instruction Of Troubleshooting23
Troubleshooting Check Table24
Operation Indicator24
Trouble Criterion Of Main Parts25
Troubleshooting Flow26
Check Of Indoor Fan Motor26
Check Of Remote Controller And Indoor Electronic Control P.c. Board27
Check Of Indoor P.c. Board And Indoor Fan Motor28
How To Check Miswiring And Serial Signal Error29
Mxz Type30
Led Indication For Communication Status30
Unit Status30
Electromagnetic Noise Enters Into Tv Sets Or Radios31
Test Point Diagram And Voltage32
Indoor Electronic Control P.c. Board32
Indoor Power P.c. Board32
Disassembly Instructions34
Terminal With Locking Mechanism34
Removing The Panel34
Removing The Indoor Electronic Control P.c. Board36
Removing The Vane Motor40
Fixing The Indoor Coil Thermistor42
Position And Procedure For Mounting The Clip-Shape Part42