Dornbeck 45kbtu heater problem

[RodneyPierce]

Alright guys, Im having some issues with my Dornbeck 45k BTU heater. Ive had it for a few years, with only a couple issues. Last year, it would fire the ignitor, warm up, then would hear the gas valve click to open, but nothing would happen, did this cycle a couple times, then would just shut down. I ended up cleaning the thermostat (I think this is what they are called, little button looking things that sense when there is heat to open the gas valve and ignite the flame)

Worked great all last year. This year, same issue, except it will only run one cycle, then wont kick on again. I can go flip the thermostat on the wall to off, then on and it will run one cycle again just fine.

Any ideas on this guy? I would like to get it working before winter really sets in.

Thanks in advance,
Rodney Pierce
Cedar Rapids, IA

 

[DPelletier]

It's called a thermocouple and it sounds like it could well be your problem. They are relatively cheap so I'd start there.

Dave

 

[RodneyPierce]

They dont look like any thermocouple that I have ever seen (which is why I wasnt sure if thats what these were called) but serve the same purpose for sure. Now to try and find the darn things.