Fujitsu ARU9RLF Service Instruction page 59

For AOU18RLFC
SERVICE PARTS INFORMATION 6
Active filter module
Check Point 1 : Check Open or Short-circuit and Diode (D1)
Remove connector, check the open or short-circuit and the diode in the module
L1
+IN
-IN
If it is abnormal,replace ACTIVE FILTER MODULE
Check Point 2 : Check the Output DC voltage (between P and N)
Check the Output DC voltage (between P and N) of compressor stopping and operating.
>> 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
L2
N
Check the open or short-circuit
Terminal
P
Tester(+) Tester(-)
(+IN)
( IN)
P
L1
※
P
Control Box
L1,L2
L2
※
Check the diode
Terminal
Tester(+) Tester(-)
L2
※
P
※
By kind of tester, the value may change significantly.
※
Ref. value 1
Specifications for Multimeter
Manufacturer : HIOKI
Model name : 3804
Power source : DC9V.
02-34
Resistance value
( IN)
+ -
360k
N 0
(+IN)
+ -
720k
1.40M / 2.28M
L2
(Ref. value 1) (Ref. value 2)
+ -
N 360k
1.69M / 1.88M
N
(Ref. value 1) (Ref. value 2)
Resistance value
1.32M / 1.50M
P
(Ref. value 1) (Ref. value 2)
1.40M / 1.51M
L2
(Ref. value 1) (Ref. value 2)
Ref. value 2
Specifications for Multimeter
Manufacturer : YOKOGAWA
Model name
Power source : DC3V.
20%
20%
20%
: 7534