SiBE041012_A
iii
Table of Contents
2. Operation Manual..................................................................................50
2.1
Name of Parts ........................................................................................50
2.2
AUTO · DRY · COOL · HEAT · FAN Operation ......................................54
2.3
Adjusting the Airflow Direction and Rate ................................................56
2.4
COMFORT AIRFLOW Operation ...........................................................58
2.5
INTELLIGENT EYE Operation ...............................................................59
2.6
POWERFUL Operation ..........................................................................61
2.7
OUTDOOR UNIT QUIET Operation.......................................................62
2.8
ECONO Operation .................................................................................63
2.9
OFF TIMER Operation ...........................................................................64
2.10 ON TIMER Operation .............................................................................65
2.11 WEEKLY TIMER Operation ...................................................................66
Part 6 Service Diagnosis.............................................................72
1. Troubleshooting with LED .....................................................................74
1.1
Indoor Unit..............................................................................................74
1.2
Outdoor Unit ...........................................................................................74
2. Problem Symptoms and Measures .......................................................75
3. Service Check Function ........................................................................76
4. Troubleshooting ....................................................................................79
4.1
Error Codes and Description ..................................................................79
4.2
Indoor Unit PCB Abnormality .................................................................80
4.3
Freeze-up Protection Control or Heating Peak-cut Control ....................82
4.4
Fan Motor (DC Motor) or Related Abnormality.......................................84
4.5
Thermistor or Related Abnormality (Indoor Unit)....................................86
4.6
Front Panel Open / Close Fault..............................................................87
4.7
Signal Transmission Error (between Indoor Unit and Outdoor Unit) ......88
4.8
Unspecified Voltage (between Indoor Unit and Outdoor Unit) ...............90
4.9
Outdoor Unit PCB Abnormality...............................................................91
4.10 OL Activation (Compressor Overload) ...................................................93
4.11 Compressor Lock ...................................................................................94
4.12 DC Fan Lock ..........................................................................................95
4.13 Input Overcurrent Detection ...................................................................96
4.14 Four Way Valve Abnormality..................................................................97
4.15 Discharge Pipe Temperature Control.....................................................99
4.16 High Pressure Control in Cooling .........................................................100
4.17 Compressor System Sensor Abnormality ............................................101
4.18 Position Sensor Abnormality ................................................................103
4.19 DC Voltage / Current Sensor Abnormality (25/35 Class) .....................106
4.20 CT or Related Abnormality (50 Class)..................................................107
4.21 Thermistor or Related Abnormality (Outdoor Unit)...............................109
4.22 Electrical Box Temperature Rise..........................................................111
4.23 Radiation Fin Temperature Rise ..........................................................113
4.24 Output Overcurrent Detection ..............................................................115
4.25 Refrigerant Shortage ............................................................................117
4.26 Low-voltage Detection or Over-voltage Detection................................120
4.27 Signal Transmission Error on Outdoor Unit PCB (50 Class Only) .......122
5. Check ..................................................................................................123
5.1
Thermistor Resistance Check ..............................................................123
5.2
Fan Motor Connector Check ................................................................124
5.3
Power Supply Waveforms Check.........................................................124
