Fujitsu AUXB04GALH Service Manual page 182

SERVICE PARTS INFORMATION 2
Inverter Compressor
Check Point 1 : Check Connection
Check terminal connection of Compressor (loose or incorrect wiring)
Check connection of magnet relay (Loose or incorrect wiring)
Terminal cover opened
V
(WHITE)
Check Point 2 : Check Winding Resistance
Check winding resistance of each terminal
If the resistance value is 0
W
V U
Attention!!
If Check 1, 2 are normal, make sure the following points.
(1) Check AC voltage among each terminals from filter PCB(INV) to Diode Bridge.
(AC208 - 230V , voltage among L1, L2 and L3).
If it does not appear, check the power supply terminal.
(2) 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.
W
(BLACK)
U
(RED)
or infinite, replace Compressor.
Resistance Value (20°C)
0.96
0.57
(AJ* 072/ 090)
(AJ* 108/ 126/ 144/ 162)
04-106
U W
V
RED
WHITE BLACK