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Thread: fujitsu inverter dead
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02-07-2009, 01:16 PM #1
fujitsu inverter dead
unit
fujitsu inverter
indoor model:ABTA45LAT(UNDERCEILING CASSETTE)
out door model:AOTA45LATL
problem: bth indoor and outdoor unit nt running
indoor lights all off
my diagnosis
OUTDOOR UNIT
checked voltage on outdoor ,L-N =240V
checked voltage N-1=240V
CHECKED VOLTAGE 1-2=240V
disconnected 3 from terminal block and checked voltage, 2-3=90v-125v
checked voltage, 2 and the disconnected 3 which goes to indoor got 84v
INDOOR UNIT
CHECKED 1-2 =240V
CHECKED 2-3=30V-90V
TO CHECK
COMPRESSOR MOTOR WNDINGS RESISTANCE
BTH FAN MOTORS WINDING RESISTANCE
Any input welcome thank you
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02-07-2009, 05:26 PM #2
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Re: fujitsu inverter dead
What kind of remote controler you got.
Check Fuse in Filter PCB.
>> If Fuse is open, check if the wiring between Terminal and Filter PCB
is loose, and replace Fuse.
Check Varistor in Filter PCB.
>> If Varistor is defective, there is a possibility of an abnormal power supply.
Check the correct power supply and replace Varistor.
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02-07-2009, 10:18 PM #3
Re: fujitsu inverter dead
Nike 123 ,The remote controller is a wireless hand held one .
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03-07-2009, 10:58 AM #4
Re: fujitsu inverter dead
Dumb question, but you've tried pushing the auto button on the indoor unit to make sure it isn't a remote control or reciever problem?
Is this a DOA unit or has it worked before?
edit: are you sober yet nike? Have you had a look at that PM i sent?Last edited by paul_h; 03-07-2009 at 11:00 AM.
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