Ihave a fujitsu air conditioner model asta18lcc
about 2 yrs old when I turn it on fan works but room wont get cold or hot,red operation light does not stay on but green timer light flashes on.
thanks Rob.
The lights on the front panel indicate fault codes dependent on the amount & intervals of the flashes. Fujitsu units carry a 5 year warranty so check with your local Fujitsu store for the agent in your area.
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The red light (operation) flashing 5 times can be one of four things depending on the green light (timer) but the green light should flash at the same rate as the red light, not faster - either 2,3,5 or 6 times. Anything other than these is abnormal and you will need a tech to diagnose.
Could be a faulty controller board or compressor.
To work out what the error code ispress the orange start/stop button on the remote controller so unit operationis stopped. Then press and hold "energy save" and "zone control" buttonsimultaneously for at least five seconds, the error code will be along thelines of En:nn where the "En:" is the error code and the":nn" indicates the indoor unit address if there are multiple indoorunits connected to the one controller. If the upper vertical bar on the capitalE is missing so it looks maybe like a 2 or something don't worry for somereasons they just do that Some common error codes are: E0 Communication error between indoor unit and wired remote control, check ifthere is 12VDC between terminal 1 + 3 at remote control and 8-9VDC pulsatingbetween terminal 2 + 3. If DC volts out of Indoor pcb is below about 11.6VDC itwill cause this error, the problem is normally dry capacitors in the 12 VDCpower supply section. This model has two power supply sections on indoor pcb. E1 Communication error between indoor unit and outdoor unit, EF Discharge temperature abnormal
Is it helpful?
Below is an extract straight from the fujitsu service manual:
Compressor location error
The compressor speed does not synchronze with the control signal. (Including start up failure of the compressor).
> permanent stop.
[Diagnosis Point]
Check if 2-way valve or 3-way valve is left open.
Check the compressor (Winding resistance value, loose lead wire).
Refrigeration cycle defective (Refer to after mentioned "refrigerant cycle diagnosis")
Fujitsu, Mitsubishi, Sanyo mini-split indoor fan motors operate continuoulsy. The room-temperature sensor is inside the unit, so the fan motor needs to circulate air continuouly to sense room-air temperature. This is normal operation.
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