Heater Fan wont cycle off
We've been working well for a while but now have a new issue. We replaced the Thermostat a few years ago and all was well. Last winter (1 year ago) I had an issue when the propane heat was on occasi...
Forum Discussion
YC 1 wrote:dougrainer wrote:YC 1 wrote:
I am betting low voltage at the fan is causing the vane switch to not allow the ignition sequence to start.
Time to check the voltage with the fan running right at the heater wires.
Of course a quick battery check would be in order to start.
The OP is NOT having a Lighting problem. They are having a fan NOT shutting OFF after a Heating cycle is complete. Doug
". I can hear the furnace burner shutting down and fan stays on."
If the voltage recovers enough for it to light and come up to temp the voltage could be pulled down enough for the fan to slow and not allow the furnace to light again. I have seen this happen and you end up with a dead battery and cold rv.
Low voltage is easy enough to check for.
While this is true, the OP would be DEAD overnight and would complain of no lighting or other 12 volt problems. Doug
