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obscenic's avatar
obscenic
Explorer
Mar 18, 2013

Atwood furnace shuts down after first failed ignition

Furnace: Atwood hydroflame 7912. Probably a 1983. The board has been replaced with a dinosaur board with fan control. I have a very bizzare problem, that I'm hoping someone out there might have so...
obscenic's avatar
obscenic
Explorer
Mar 18, 2013
Old-Biscuit wrote:

Old problem....new board didn't correct.

Yup, exactly.

Old-Biscuit wrote:

OK but is the t-stat any good

Brand new
Old-Biscuit wrote:

You are losing power at/to t-stat (loosing program/time/date etc.) so either new wiring has a scape on insulation and is grounding out, a loose wire nut, poor connection OR old relay is faulty.


T-stat doesn't get power from wires, it has batteries. There's only two wires going to t-stat; t-stat just opens or closes them to connect 12v back to the furnace.

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