5-2. Inverter compressor
Check point 1. Check connection
Check terminal connection of compres-
sor.
(loose or incorrect wiring)
U (R)
(Red)
V (S)
(White)
W (C) (T)
(Black)
Transistor PCB (IPM)
Check connection of transistor PCB.
(loose or incorrect wiring)
Transistor PCB (IPM)
TM303TM304TM305
Red
White
Black
Compressor
↓
Check point 2. Check winding resistance
Check winding resistance of each terminal.
Resistance value:
•
AOTG30KMTC: 0.642 Ω at 20 °C
• AOTG34KMTC: 0.432 Ω at 20 °C
→ If the resistance value is 0 Ω or infinite, replace compressor.
↓
Check point 3. Replace inverter PCB
If check point 1 to 2 do not improve the symptom, replace main PCB.
5-2. Inverter compressor - (03-76) - 5. Service parts information
TROUBLESHOOTING
TROUBLESHOOTING
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