Inverter Compressor - Fujitsu Airstage V-II Service Manual

SERVICE PARTS INFORMATION 3

Inverter Compressor

Check Point 1 : Check Connection
Check terminal connection of Compressor (loose or incorrect wiring)
Terminal cover opened
W
(BLACK)
Check Point 2 : Check Winding Resistance
Check winding resistance of each terminal
If the resistance value is 0
W (T)
V (S)
U (R)
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.
(AC380V - 415V, 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.
(DC15.0 - 18.0V 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.
V
(WHITE)
U
(RED)
or infinite, replace Compressor.
Resistance
Value
0.534
Check connection of magnet relay (Loose or incorrect wiring)
(25°C)
04-100
INVERTER PWB
TM808
BLACK
TM807
TM806
RED WHITE
compressor
AC
DC