Fujitsu AB Series A18LATN, Service Instruction

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SERVICE PARTS INFORMATION 3
Check Point 1 : Check Open or Short-circuit and Diode (D1)
Check Point 2 : Check the Output DC voltage (between P and N1)
Terminal
Resistance value
L2 L1
P
N2
N1
Power factor control
D1
(+)
( )
Io
L2 L1
L1,L2
P
P
Control Box
N1
N1
(+)
(+)
( )
( )
) Tester(-)
Check the open or short-circuit
Check the Output DC voltage (between P and N1) of compressor stopping and operating.
Terminal
Resistance value
L2
P
P
N2 L2
L2
) Tester(-)
Check the diode
If it is abnormal,replace ACTIVE FILTER MODULE
360k
0
360k
720k
5.4M
(approx.)
5.3M
(approx.)
5.8M
(approx.)
5.4M
(approx.)
Active Filter Module
Remove connector, check the open or short-circuit and the diode in the module
>> If the output voltage of compressor operating is less than the output voltage of compressor stopping,
Active Filter Module is detective. >> Replace Active Filter Module
07-39
( For AB*A36L/ 45L )