Fujitsu AB Series A18LATN Service Instruction page 106

SERVICE PARTS INFORMATION 2
Inverter Compressor
Check Point 1 : Check Connection
Check terminal connection of Compressor
(loose or incorrect wiring)
Terminal cover opened
W W
(BLACK) (BLACK)
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.
U U
(RED) (RED)
V V
(WHITE) (WHITE)
or infinite, replace Compressor.
Resistance Value :
V
Check connection of Main PCB
(Loose or incorrect wiring)
MAIN PCB
AB*A36L/ 45L
AB*A18L/ 24L
WHITE
0.73 (For AB*A18L)
0.97 (For AB*A24L)
0.26 (For AB*A36L/ 45L)
at 20°C
07-38
W304
W8
W305 W303
W7 W9
RED
Compressor
BLACK