SiBE12-908
94
Service Diagnosis
2.38 Lights-out of Microcomputer Status Lamp............................................160
3. Check ..................................................................................................161
3.1
Fan Motor Connector Output Check ....................................................161
3.2
Thermistor Resistance Check ..............................................................162
3.3
Installation Condition Check.................................................................163
3.4
Outdoor Fan System Check (DC Motor) ..............................................163
3.5
Power Supply Waveform Check...........................................................164
3.6
Main Circuit Electrolytic Capacitor Check ............................................164
3.7
Refrigerant System Check ...................................................................165
3.8
“Inverter Checker” Check .....................................................................166
3.9
Power Transistor Check .......................................................................167
3.10 Discharge Pressure Check...................................................................168
3.11 Electronic Expansion Valve Check.......................................................169
3.12 Rotating Pulse Input on Outdoor Unit PCB Check ...............................170
3.13 Main Circuit Short Check......................................................................171
3.14 Four-way Valve Performance Check....................................................172
