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Fujitsu inverter fan working.. Shows red operation light briefly then timer light flashes twice.. Not cooling or heating

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  • 169 Answers

Did you try resetting remote control and aircond?

Posted on Nov 27, 2013

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: fujitsu inverter; opens vents but no red light, no cold air

check that it is set to cooling sounds like it may be set to heat in cooling mode the indoor fan should at least run

Posted on Mar 13, 2010

SOURCE: Fujitsu inverter ASTA24LCC aircon wont

Check that the gas is not leaking, that would be the most likely cause.

Posted on Jun 17, 2008

hvac1960
  • 2133 Answers

SOURCE: My fujitsu inverter asta12jcc outside

Communication error between indoor to out door.Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4

Posted on Jan 02, 2011

hvac1960
  • 2133 Answers

SOURCE: Futitsu Inverter Air-con {ASTA09LCC}- Fan operates

To cancel the timer, press timer on setting until it comes 00.00. Or remove batteries from remote and re fix after few minutes. If still problem persists, check and rectify error code of e-5 as follows:

Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4

Hope helpful.

Posted on Jan 09, 2011

  • 11800 Answers

SOURCE: Fujitsu General ASHA09LAC Multi Inverter

Your split system is an inverter model. In it the compressor is powered not simply from the mains thru a relay but from a special and very complex set of converters: a rectifier to convert the incoming AC current to DC and then uses pulse-width modulation of the DC current within an inverter to produce AC current of a desired frequency to power the compressor.
In your case the unit that provided the final AC current to the compressor has failed. The fact this happened a few days after you have started using it is a clear indication of manufacturing defect - some of the electronic components used in that inverter were of a low quality and they haven't been able to cope with the stresses so they failed.
This is something that only the dealer (and its repair crew) can solve and it's covered by the warranty - time to call them. And in the mean time disconnect the unit from the mains.

Posted on Jun 03, 2011

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1 Answer

Fujitsu timer lights flashing twice


Serial signal error meaning the outdoor is not talking to the indoor unit. It usually means a faulty inverter / controller board which will have to be replaced. Get a tech to confirm.

Dec 04, 2017 | Fujitsu Heating & Cooling

1 Answer

Fujitsu ASTA12LCC WILL NOT HEAT OR COOL. GREEN TIMER LIGHT FLASHES TWICE AT INTERVALS. FAN WORKING. IS IT REPAIRABLE?


Serial signal reverse error. Basically the outdoor unit is not talking to the indoor unit. This is normally due to damage to the outdoor controller PCB and it needs to be replaced.

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You need to record how many times each light flashes before it pauses and then repeats. This indicates a specific error that a tech will be able to diagnose and directs them to the components that have failed.

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FUJITSU Indoor Inverter ASTA09LCC/ASTA12LCC airconditioning - not cooling


If the operation button is flashing 8 times, the timer light should also flash 4 times in each sequence. This indicates a failure of the PFC circuit in the outdoor unit which basically means a faulty outdoor board and will have to be replaced.
If the operation light is flashing 8 times by itself, the indoor controller board may have a fault. You can normally test this by putting the mode on the remote to 'Fan' and checking that the controls otherwise work normally - louvers work as directed and fan speed changes correctly when selected on the remote.
Most likely the fault lies in the outdoor board but you should contact a tech to diagnose correctly.

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1 Answer

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check that it is set to cooling sounds like it may be set to heat in cooling mode the indoor fan should at least run

Mar 10, 2010 | Heating & Cooling

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Try turning the main isolator off for 10 minutes to reset the system. If it doesn't clear the error, count how many times the light flashes which will give you the error code.

Oct 09, 2017 | Fujitsu Heating & Cooling

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I have Fujitsu air conditioner Model abt45rba3w Serial t000147 The unit will not operate. The red operation light is flashing fast continuously and the a/c unit will not turn on. The timer light is...


Have you checked for compressor operation? If it is not running you may need to replace the hard start relay/capacitor. If you remove it and get the numbers it is available on ebay for a fair price. eBayeBay

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1 Answer

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This happen when you use the inverter for a long time and start getting old and over heat...try to power down the units and keep it for about an hour and then starft them again and try to install a small fan to keep them cool.

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