Ipm (Mounted On Inverter Pcb) - Fujitsu Airstage J-II Service Manual

SERVICE PARTS INFORMATION 5
IPM
(Mounted on Inverter PCB)
Check Point 1
Disconnect the connection wires between the Inverter
PCB - ACTPM and Inverter PCB - Inverter Compressor.
Set the tester to the "Resistance" mode, and measure
the resistance between the following terminals.
Yellow wire (P) - Fasten terminals U/V/W
Blue wire (N) - Fasten terminals U/V/W
Judge the result of as follows:
All 6 points several M
1 or more points several k
Check Point 2
Set the tester to the "Diode" mode, and measure the voltage value between the following terminals.
Tester +side Tester - side
(red) (black)
Terminal U
Yellow wire
Terminal V
(P)
Terminal W
Terminal U
Blue wire
Terminal V
(N)
Terminal W
Judge the result of as follows:
All 6 points several 0.3V to 0.7V
1 or more points under 0.1V or over load : Defective
or greater : Normal
to short : Defective
Tester display
[V]
: Normal
U
V
W
Inverter PCB
04-88
P
N