Heater controller board

[Akaxis]

I have a 2016 Axis 25.2 motor home. I have had to replace 3 controller boards due to water getting into the circuitry. The fan keeps running. Has anyone had the same problem? What did you do to correct it?
I would appreciate any help you might give me.

[16ACE27]

Originally Posted by Akaxis

I have a 2016 Axis 25.2 motor home. I have had to replace 3 controller boards due to water getting into the circuitry. The fan keeps running. Has anyone had the same problem? What did you do to correct it?
I would appreciate any help you might give me.

Yep, lotsa Thor coaches have this problem; a lot due to the vents on the heater door being cut the wrong way which directs rain into the heater instead of keeping it on the outside.

[DenverTransplant]

I had problems with water getting under the heater circuit board in my ACE30.1 despite the fact that I don’t have one of the louvered covers. The board sits on a plastic shelf where water accumulates. The water shorts the pins and makes the heater do strange things. The heater fan would run even though the thermostat was off. Sometimes it would cycle. Pulling the board and drying it off and removing the water from the shelf would make it go away....until it rained again.

After having it happen a couple of times I ended up sealing the flange of the cover with some rubber weather stripping. I tried Butyl tape, which sealed well but made the cover really hard to get off. The weather stripping seems to do the job as I hasn’t happened again...yet.

Atwood also makes a board relocation kit that angles the board up to get it higher off the shelf it sits on. When I called Atwood they said I had to go to an authorized repair company, which meant CW. I wasn’t going to deal with that so I drilled a few holes in the shelf and used a plastic wedge to angle the board up so I had more clearance. You have to be gentle as the board’s pins slot into a fixed connector.

[JosephC]

I had a 2016 Jayco with I believe, an Atwood heater. As the previous posts indicated, the louvered door was the reason for water entrance. Jayco paid for the board and labor which was performed by a mobile service. Also, Jayco sent me he modified door which corrected the problem.

Try getting the controller board reimbursement from Atwood or Thor. Contact Ron Baker or Nate Williams at Thor; they are incredibly helpful and very professional.

As a minimum, Thor should send you the retro kit which is very easy to install.