Have a Neodyne heater that has a LED that flashed twice. I had to replace the pressure switch because there was water in the old one. Water was dripping on it from the pan when the AC was running. After replacing this swich and turning the AC back on the draft blower would run even when the thermostat was not on. The LED now blinks once. I checked all of the limit switches and they are all closed so the fault should not be the limit switch. At one point the blower stopped and the 3A fuse was blown. I replaced it and it ran again but still gave same fault. I disconnected the thermostat from the wall and it still gave same fault. I disconnected the white wire from the controller and it gave the same fault. Do you think the controller is bad? Any other suggestions?