SiBE611027_A
Service Diagnosis 38
Part 6
Service Diagnosis
1. Troubleshooting with LED .....................................................................39
2. Problem Symptoms and Measures.......................................................40
3. Service Check Function ........................................................................41
3.1 ARC452 Series.......................................................................................41
4. Troubleshooting ....................................................................................44
4.1 Error Codes and Description ..................................................................44
4.2 Indoor Unit PCB Abnormality .................................................................45
4.3 Fan Motor (DC Motor) or Related Abnormality.......................................46
4.4 Thermistor or Related Abnormality (Indoor Unit)....................................48
5. Check ....................................................................................................49
5.1 How to Check .........................................................................................49