Forum Discussion

pcoplin's avatar
pcoplin
Explorer II
Nov 27, 2015

Atwood furnace blowing cold some time at night...

I have an Atwood 7900 series furnace in my 2001 Lance 915. DSI iginition, no external timer relay. The past couple nights I have woke up to cold to find the heat has shut off and it just blows cold...
John_Joey's avatar
John_Joey
Explorer
Nov 28, 2015
FWIW, neighbor of mine had a slide in with (I think) that furnace and was having the same problem when they came down from Canada. Go to bed nice and warm, and sometimes would wake up nice and cold. They would turn the furnace off, then on, and off it would go.

I found the connection to the sparker was corroded. Once I cleaned that up, the problem went away. Good news is you shouldn't have to pull the furnace to get to it.

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