Questions & Answers for: Fujitsu signal board replacement

...board level repair only. Try going to ptscorp.com, find their phone number, and see if they repair these boards. if not you will need to contact the manufacturer for replacement boards. good Luck ...

...the error is: Serial signal (reverse) error, during operation. Basically the most likely suspect is a faulty outdoor controller PCB but it could also be other components causing this to board

...SIGNAL (REVERSE) ERROR AT OPERATION START UP Outdoor controller circuit board sounds faulty. This error means that the indoor and outdoor units cannot communicate. Replace the outdoor controller in ...

...signal forward, the indoor board has the problem. First check the the interconnect wiring is ok. If it is, one of the boards will need to be replaced and it is most likely the outdoor board (in my ...

...signal error which means the outdoor unit is not talking to the indoor unit or vice versa. Most likely the outdoor board is stuffed but you need to count how many times the timer flashes to be ...

...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

...signal error' that means the outdoor unit is not talking to the indoor unit. Usually caused by bugs, geckos, cockroaches, etc. getting on the inverter board and frying it. You could try turning off ...