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...
pcoplin's avatar
pcoplin
Explorer II
Nov 27, 2015
AllegroD wrote:
Cannot tell from your post whether this was duplicated while on shore power. Could it be that your batteries got too low for the furnace to turn on? Check your manual. I believe the Atwood 7900 Series says 10.5 and above.


I ws able to duplicate it on shore power, I verified the relay has 12.9 to it, and the thermostat is sending 13.1 or so to it when tripped.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,283 PostsLatest Activity: Jul 17, 2025