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Old 05-30-2013, 01:21 PM   #1
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Forced Air question?

We keep our motorhome parked at home, always plugged in.

A few times, I've gone out to it and noticed a fan/blower running. Best as I can tell, it's the furnace blower. The furnace is not on, but the fan is. I'm thinking it's a thermostat problem, incorrectly sending a fan start signal to the forced air unit.

Very easy to replace the thermostat, but thought I would ask advice first...

Ed
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Old 05-30-2013, 05:31 PM   #2
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Odd that this would happen , can you post your furnace and T'stat brand , model. May be a control board issue.
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Old 05-30-2013, 09:41 PM   #3
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My power convertor has a cooling fan that almost sounds like a furnance blower when it kicks on.
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Old 05-30-2013, 10:19 PM   #4
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Mine too bet on the inverter
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Old 05-30-2013, 11:26 PM   #5
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Inverter, and check your battery water.
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Old 05-31-2013, 11:33 AM   #6
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2x on inverter fan.
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Old 05-31-2013, 11:53 AM   #7
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Good point on the inverter, but the fan is blowing through the furnace registers, and when I pulled the furnace C/B it stopped...
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Old 06-03-2013, 02:11 AM   #8
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You could maybe try totally disconnecting the t'stat, if the furnace still runs then you've got a control board problem.
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Old 06-04-2013, 12:03 AM   #9
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Good point, will try that!
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