Fujitsu AMUG24LMAS Service Manual page 98

Parts information 2
Inverter compressor
AOU24/30RGLX
AOUG36/48LMAS1
Check Point 1 :
Check connection
Check terminal connection of compressor
(loose or incorrect wiring)
S(V)
(WHITE)
Inverter PCB
R(U)
(RED)
Check Point 2 :
Check winding resistance
Check winding resistance of each terminal
If the resistance value is 0
R(U)
T(W)
Check Point 3 :
Replace main PCB
If the symptom does not change with above check 1, 2, replace main PCB.
T(W)
(BLACK)
or infinite, replace compressor.
S(V)
(Appropriate) Resistance value :
AOU24/30RGLX : 0.642 Ω at 68°F (20°C)
AOUG36/48LMAS1 : 0.432 Ω at 68°F (20°C)
IPM PCB
(U) RED
24/30 models : TM305
36/48 models : TM403
(V) WHITE
24/30 models : TM304
36/48 models : TM404
(U)
RED
Compressor
03-50
(W) BLACK
24/30 models : TM303
36/48 models : TM405
(V)
(W)
BLACK
WHITE