SiBE01-5033Service Diagnosis 51Part 6Service Diagnosis1. Caution for Diagnosis............................................................................522. Problem Symptoms and Measures .......................................................533. Service Check Function ........................................................................544. Troubleshooting ....................................................................................574.1 Error Codes and Description ..................................................................574.2 Indoor Unit PCB Abnormality .................................................................584.3 Freeze-up Protection Control or High Pressure Control.........................594.4 Fan Motor or Related Abnormality (AC motor).......................................614.5 Thermistor or Related Abnormality (Indoor Unit)....................................624.6 High Pressure Control in Cooling ...........................................................634.7 Thermistor or Related Abnormality (Outdoor Unit).................................655. Check ....................................................................................................675.1 Thermistor Resistance Check ................................................................675.2 Installation Condition Check...................................................................685.3 Outdoor Unit Fan System Check............................................................695.4 Hall IC Check .........................................................................................69
