Recent content by larrymb

Followup: I replaced the control board and the unit works fine now. While I am happy that the unit works, I am frustrated at what looks to me like a design with an overly sensitive calibration. I don't think anything was wrong with the board other than a component drifted a bit, moving the flame...

Hello: This heater has worked fine for 4 years, but now won't stay lit, and displays an "IF" code. The heater lights normally then shuts down after a few seconds. I've done a lot of research so far and checked quite a bit. Here is what I've done so far: I checked the gas pressure. I...