Gas furnace help

Old 12-01-22, 11:04 AM
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Gas furnace help

I have a coleman gas furnace model number 7670c856...I recently got a woodstove and I want to be able to switch the fan only switch on my thermostat on so just my blower runs on the furnace to help push the air thru my vents...I only have a white and red wire going to there a way to do this still...Any help is greatly appreciated
Old 12-01-22, 02:08 PM
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Welcome to the forums.

You need at least three wires from the thermostat to the furnace.
Check the cable for extra conductors that may have been cut off.
Your furnace may or may not have a fan relay in it.
Look over this thread.... coleman presidential II 7670C856 blower wont start

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