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Old 01-20-2019, 09:11 AM   #1
Ske120
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Furnace fan runs continuously on battery power

Has anyone else had an issue with the furnace fan not kicking out at all if you are on battery power only? Kicks out if we are plugged into 30 amp on generator, but not at night when generator off. Is this just the way it should work?
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Old 01-20-2019, 09:12 AM   #2
chuckster57
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Furnace fan should NOT run if only on battery power. Is the thermostat set to OFF?
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Old 01-20-2019, 09:14 AM   #3
Ske120
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The thermostat is on. Why shouldn’t it run at all on battery?
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Old 01-20-2019, 09:19 AM   #4
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Turn the thermostat OFF and see if the fan stops running. If the thermostat is on and set to HEAT, its possible the fan isn't spinning fast enough for the sail switch to tell the control board that its okay to start the flame. it should shut down after a few attempts. Your battery may be weak enough that the control board isn't getting the proper voltage to shut things off.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.

Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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Old 01-20-2019, 10:16 AM   #5
Ske120
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The furnace is on and heat is coming through. The fan just never kicks out. Wondering if it is like everything else and needs 30 amp to operate properly. When 40km in the middle of nowhere you would think it would run properly on the battery. ��
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Old 01-20-2019, 10:31 AM   #6
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could be cold enough that once the set temp is reached, and goes into cooldown operation, the thermostat senses a drop in temp and it fires up again. I don't know what thermostat you have but some are set to a 1 degree difference and it may be trying to maintain.

Where the thermostat is located in relation to the vents can have a big effect on operation.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.

Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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