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CMunrock's avatar
CMunrock
Explorer
Aug 08, 2015

Why does my A/C fan on when I run the furnace?

My fifth wheel has two temp controllers. One has a digital display that controls my A/C and blower. This thermostat also controls my gas furnace. THe other thermostat is the type that I've had on...
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Uually's avatar
Uually
Explorer
Aug 08, 2015
Set your thermostat on fan . You should have a + - & auto setting. Try setting it on the auto and try that. Worked for me.

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