Fujitsu Comfort Series Service Manual page 51

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
U
W
Check Point 3 : Replace Invereter PCB
If the symptom does not change with above Check 1, 2, replace Inverter PCB.
Check Point 4 : Replace Main PCB
If the symptom does not change with above Check 1~3, replace Main PCB.
Terminal cover opened
W(C)
U(R)
(BLACK)
(RED)
V(S)
(WHITE)
or infinite, replace Compressor.
Resistance Value :
V
Inverter PCB
RED
0.766 at 20°C
03-32
W400 W401 W402
Compressor
BLACK
WHITE