There was a wreck with a gas truck and a train about 4days ago and it mest up some power lines down the road from us. We think that when it exploded there was a power surge or something because our unit now will not work. The timer indicator light flashes 3 times about every 30sec on the indoor unit. The indoor unit is set on cool and the fan is on auto. The indoor fan is running but the condenser isnt doing anything. Could this have something to do with the timer light flashing.
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Serial signal (reverse) error, during operation.
Try turning power off at isolator for ten minutes and then switch back on. If error code persists, you will probably need a new controller PCB in the outdoor unit.
When the indoor unit does not receive the signal for 10 consecutive seconds during the operation >Permanent stop after 30 seconds.
Check the indoor /outdoor cable connection (in order). If the cable wiring is not abnormal, measure the voltage of the outdoor
unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis method.)
Try cutting power to the indoor and outdoor units for a couple of minutes. Restore power and see if the error returns. The A1 error for this line of units indicates high compressor discharge temperature, which translates to overheating outdoor unit.
If this error code remains after a hard power reset, it's time to pick up the phone. Either you have a refrigerant leak which has resulted in a loss of freon, or a blockage in the refrigerant plumbing that is backing up pressure in the system. Both conditions will require a major repair by an authorized service tech to get your heat pump up and running again.
Does the compressor relay pull in on a call for cooling? Is there voltage at the relay coil? What type of thermostat do you have? Can you jump R to Y on the t-stat subbase? If you can do that and the compressor relay pulls in then replace the t-stat.
With the limited information i would suggest the following:
Check to see if the outdoor unit is running.
If the outdoor unit is running, grab the large copper line coming out of it and see if it is cool.
If the fan outside is running and the line is not cool then the compressor is not running or the system has lost its refrigerant charge.
Check these things and repost for a more complete answer.
Hope this helps.
I think, your compressor is not working. Check with amphs meter. If less amphs gas leak. Arrest the leak and re charge gas. If tripping with high amphs change capacitor. Still high amps, compressor is defective.
please make sure your air conditioner,s outdoor unit,s fan is working if its working and unit is well clean then it can be low freon gas problem ,
please refill freon gas there (if you know how to fill gas )
if don,t know then try to contact to a trained technician for further action .
Hi Shannon, I would pursue your fight with Fujitsu, normally their units are reliable:( It could be a really simple problem or a really complex one ranging from many componenets. A air conditioner has many more components that people may think. Keep fighting to get the unit repaired will it is still under warranty, after that Fujitsu wont want to know you. It could also be a wiring and refrigerant fault. Call Fujitsu out again. I take the time to answer your question, so please rate me.
Check the disconnect switch and make sure that both the fuses are good and not shot. If one is shot then the system wont work. There are two fuse. Also be careful due to you will be working around 210 volts