Fujitsu AU G18LVLB Series Service Instruction page 66

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 Main PCB
If the symptom does not change with above Check 1, 2, replace Main PCB.
Terminal cover opened
T(W)
R(U)
(BLACK)
(RED)
S(V)
(WHITE)
or infinite, replace Compressor.
Resistance Value :
V
Main PCB
RED
at 20°C
1.91
02-38
W400 W401 W402
BLACK
WHITE
Compressor