SiBE12-908
Service Diagnosis
102
2.38 Lights-out of Microcomputer Status Lamp............................................167
3. Check ..................................................................................................168
3.1
Fan Motor Connector Output Check ....................................................168
3.2
Thermistor Resistance Check ..............................................................169
3.3
Installation Condition Check.................................................................170
3.4
Outdoor Fan System Check (DC Motor) ..............................................170
3.5
Power Supply Waveform Check...........................................................171
3.6
Main Circuit Electrolytic Capacitor Check ............................................171
3.7
Refrigerant System Check ...................................................................172
3.8
“Inverter Checker” Check .....................................................................173
3.9
Power Transistor Check .......................................................................174
3.10 Discharge Pressure Check...................................................................175
3.11 Electronic Expansion Valve Check.......................................................176
3.12 Rotating Pulse Input on Outdoor Unit PCB Check ...............................177
3.13 Main Circuit Short Check......................................................................179
3.14 Four Way Valve Performance Check ...................................................180