Inverter Compressor; Service Parts Information - Fujitsu Airstage J-II Service Manual

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
C
S
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.
(Rated voltage among L and N).
If it does not appear, check the power supply terminal.
(2) Check Voltage from Main PCB to Inverter PCB.
(DC13.5 - 16.5V between terminals of CN126 (1-2) connector
and DC (-12.0) - (-8.0)V between terminals of CN126 (3-2) 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.
Terminal cover opened
C
(BLACK)
(RED)
S
(WHITE)
or infinite, replace Compressor.
Resistance
Value
0.24
Check connection of Inverter PCB (Loose or incorrect wiring)
TM404
R
TM405
BLACK
Compressor
(20°C)
04-85
TM403
Inverter PCB
RED
WHITE
AC
DC