SiBE01-503
Table of Contents iii
Part 6 Service Diagnosis............................................................. 51
1. Caution for Diagnosis............................................................................52
2. Problem Symptoms and Measures .......................................................53
3. Service Check Function ........................................................................54
4. Troubleshooting ....................................................................................57
4.1 Error Codes and Description ..................................................................57
4.2 Indoor Unit PCB Abnormality .................................................................58
4.3 Freeze-up Protection Control or High Pressure Control.........................59
4.4 Fan Motor or Related Abnormality (AC motor).......................................61
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................62
4.6 High Pressure Control in Cooling ...........................................................63
4.7 Thermistor or Related Abnormality (Outdoor Unit).................................65
5. Check ....................................................................................................67
5.1 Thermistor Resistance Check ................................................................67
5.2 Installation Condition Check...................................................................68
5.3 Outdoor Unit Fan System Check............................................................69
5.4 Hall IC Check .........................................................................................69
Part 7 Removal Procedure .......................................................... 71
1. Indoor Unit.............................................................................................72
1.1 Removal of Air Filter...............................................................................72
1.2 Removal of Front Grille ..........................................................................75
1.3 Removal of Horizontal Blades / Vertical Blades .....................................78
1.4 Removal of Electrical Parts Box / PCB / Swing Motor............................80
1.5 Removal of Heat Exchanger ..................................................................86
1.6 Install of Drain Plug ................................................................................89
1.7 Removal of Fan Rotor / Fan Motor.........................................................90
2. Outdoor Unit..........................................................................................94
2.1 Removal of Panels .................................................................................94
2.2 Removal of Bellmouth and Left Side Plate.............................................96
2.3 Removal of Electrical Device Mounting Plate.........................................97
2.4 Removal of Propeller Fan and Fan Motor ..............................................98
2.5 Removal of Sound Blanket.....................................................................99
2.6 Removal of Partition Plate....................................................................101
2.7 Removal of Compressor.......................................................................103
Part 8 Others .............................................................................105
1. Others .................................................................................................106
1.1 Trial Operation and Testing..................................................................106
1.2 Pump Down Operation .........................................................................106
1.3 Jumper Settings ...................................................................................107
Part 9 Appendix......................................................................... 109
1. Piping Diagrams..................................................................................110
1.1 Indoor Units ..........................................................................................110
1.2 Outdoor Units .......................................................................................111
2. Wiring Diagrams..................................................................................113
2.1 Indoor Units ..........................................................................................113
2.2 Outdoor Units .......................................................................................113
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