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Sf 30 furnace blower question Frenchy 3-5-17  
Had blower motor replaced works good except when gas off the state also off blower comes on all by itself in the morning blows for a while then shuts off. Even when I shut off breakers it will still blow any ideas.
Re: Sf 30 furnace blower question Bubba The Bus Tech 3-6-17  
1ST If there is no gas and the thermostat asks for heat the furnace will start and try to light three times then give up. Newer ones shut the fan off after this happens, older ones the fan runs until you shut the thermostat off.

2nd The furnace does not run on 110 volt power, so if you shut off all the breakers it runs off the RV battery. You need to shut off the the thermostat or remove the 12 volt fuse to kill the furnace.
BEWARE! pulling the fuse will disable the Air Conditioning! The thermostat runs off 12 volt battery power from the furnace.

Good Luck
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