Atwood Hydro Flame Furnace just quit

The circuit board has quit flashing completely and the thermostat is not working. Could it possibly be the thermostat? Working on it this weekend and the thermostat is no longer even clicking. We can't get the A/C, or the fan to come on. Where does the thermostat get it's power and is there a way to bypass it to test? We have a permanent site so we are connected to shore power all the time. New battery and a new converter we installed Spring 2014.

there was a similar thread a couple of weeks ago;

You have a bad connections somewhere; I removed the furnace cover (outside) and removed/reinserted each of the connectors. There is also a resetable switch by the fan - I turned this off/on and the furnace started working.

(I checked my furnace yesterday and it's still working)

gerry

Stuck sail switch.

Moved from Forum Technical Support

Furnace uses 12V DC power for operation
The 12V DC power can come from good charged battery when not on shore power
The 12V DC power can come from converter when connected to shore power


This is a Fault/Error Code Chart

DIAGNOSTIC CHART
FAULT *************************************** LED INDICATION
Internal Circuit Board Failure ---------- Steady on, no flashing
Limit switch/Airflow problems ----------- 1 flash with 3-second pause
Flame Sense Fault ----------------------- 2 flashes with 3-second pause
Ignition Lockout Fault ------------------ 3 flashes with 3-second pause

DO you hear it clicking trying to start up...

The control board usually trys three clicks before quitting...

Also we always burn the stove burners the first time we start up on a trip. This burns out all of any trapped air in the propane lines...

You should also hear the lower fan kick pn prior to firing the furnace flame.... There is a SAIL SWITCH the fan has to move before it will ignite the furnace... Might find that and make sure it isn't filled up with rash or something...

Most often when you hear about these not working it has to do with the battery drained down.

Roy Ken

you must have a good charged 12v battery EVEN when on shore power.