Inverter Compressor - Fujitsu ASTG30KMTC Service Manual

5-2. Inverter compressor

Check point 1. Check connection
Check terminal connection of compres-
sor.
(loose or incorrect wiring)
V (S)
(White)
Transistor PCB (IPM)
U (R)
(Red)
↓
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
W (C) (T)
→ 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
Check connection of transistor PCB.
(loose or incorrect wiring)
W (C) (T) Transistor PCB (IPM)
(Black)
Red
U (R)
V (S)
- (03-76) -
TM305 TM304 TM303
Black
White
Compressor
5. Service parts information