Luxaire furnace blower will not shut off

danaugstin

Have a Luxaire furnace model number FG9B08012UP11B, the problem is the blower will not shut off.

This past summer on a 85+ degree day the blower came on by itself, the therm. was set on 50 degrees. The power to the furnace was shut off.

I have checked all the connecters, unplugged and plugged in all the tubes to the to check for dirt and water and found none.

When I turned the power back on the blower did not run. I set the thermostat so it would run and it operated properly until the blower should have shut off and it stayed running. Turned the power off, went thru the connectors and all that again and the the same thing happened.

This furnace is in my mothers house and I did not know about any of the problems until a few days ago.
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Any help is appreciated

Flashheatingand

It sounds like the fan relay is sticking. Maybe a problem with the t-stat, maybe the control board. It's hard to say.