I am getting an ER clean S code on my Frigidaire dishwasher. I disassembled the blower vent and cleaned it with power off [not that much debris in rubber vent flap]. The code disappeared and machine ran for about 15-20 minutes and then ER clean S code reappeared. Tried power off again and code disappeared; but I am sure it will reappear.
Any ideas, control board, how do I diagnose problem