thermostat failure

[owenthered]

2013 Bullet Premier 30. I am getting and E flashing on thermostat (Dometic) and furnace no longer works. I cant get the fan to work either. Blown 40 amp fuse was replaced. Hooked up to shore power.

[chuckster57]

Welcome to the forum :wlcm:

Is there a number after the “E”? There is a ton of information on the web if you know the error code.

[ChuckS]

Manual for your thermostat....

What E code was flashing?

https://www.dometic.com/assets/59/14/3313325_55914.pdf

[ChuckS]

Also what did the 40 Amp DC fuse go to.. if I’m looking at the right WFCO panel max DC fuse rating would have been only a 30 amp fuse and there would have been two of those for the converter reverse polarity protection