furnace fan will not cut off
Ok, July 4th get home. Start unloading and do so.. later go back in camper and hear fan blowing. Under fridge is the furnace. fan is running (NO HEAT) we checked the thermostat all positions correct...
Forum Discussion
Fuse feds DC power to 'timed delay relay' (Or Blower control on circuit board---depends on brand/model/year of furnace)
When that 'relay' or 'circuit on board' is bad...continuous DC Power
Wiring from t-stat (DC power) activates the FUSED DC power to fan
Disconnecting those wires and fan still runs proves t-stat is NOT problem
'Relay' or 'circuit board' is.
Course this is ALL generic troubleshooting cause you have not supplied ANY information about furnace.....BRAND/MODEL/YEAR
Kinda like asking "Is this rope long enough"?
We know what rope IS but have no idea what it is going to be used for
When that 'relay' or 'circuit on board' is bad...continuous DC Power
Wiring from t-stat (DC power) activates the FUSED DC power to fan
Disconnecting those wires and fan still runs proves t-stat is NOT problem
'Relay' or 'circuit board' is.
Course this is ALL generic troubleshooting cause you have not supplied ANY information about furnace.....BRAND/MODEL/YEAR
Kinda like asking "Is this rope long enough"?
We know what rope IS but have no idea what it is going to be used for
