Furnace problems - 3 lights, any solution?
Hi, my Atwood 8535 IV does not want to keep going. It fires up, it blows, the burner comes on but as soon as the electrode stop clicking, the flame stops. It tries 3 times then I get a 3 shot flashing...
Forum Discussion
Jagtech wrote:
Likely a flakey sail switch. Intermittent action of a flakey switch will cause the furnace to try to start, then fail. You can TEMPORARILY jumper it with a wire to see if that fixes the problem, and proves the switch is indeed bad.
NOT LIKELY. The best way to test this is to watch the furnace. IF it goes thru its 3 total ignition tries and then shuts down, then the sail switch is not the problem. I have never seen a sail switch that once it closed, allowed the furnace to light, then opened and cause the furnace to shut down within a few minutes/seconds. Now, LOW 12 volt current to the furnace causing slower fan speeds may cause this type problem. Doug
