Fujitsu AUXB04GALH Service Manual page 183

SERVICE PARTS INFORMATION 2
Inverter Compressor
Check Point 1 : Check Connection
Check terminal connection of Compressor (loose or incorrect wiring)
Check Point 2 : Check Winding Resistance
Check winding resistance of each terminal
If the resistance value is 0
C
S
R
Attention!!
If Check 1, 2 are normal, make sure the following points.
Check Voltage from Main PCB to Inverter PCB.
(DC16.0 - 20.0V between terminals of CN126 (1-2) connector of Main PCB).
If it does not appear, replace Main PCB.
If both of above voltages appear, it is considered to be Inverter PCB circuit failure.
Replace Inverter PCB and check operation.
Terminal cover opened
W
U
(BLACK)
(RED)
V
(WHITE)
or infinite, replace Compressor.
Resistance Value Model
0.33
Check connection of Inverter PCB
(Loose or incorrect wiring)
( at 20°C)
04-113
W
U V
Compressor
DC