Furnace won't stop blowing

[emptynest]

AC running, furnace kicked on and won't stop blowing. Shut all power off to RV, still comes back on. Not heating but blowing. Any thoughts?

[cw3jason]

Check your thermistat. You can set the temp for heat and for AC individually. maybe your heat temp is set to low?

[pvcoach]

Ours did the same when the printed wiring board got wet from a leaking black tank flush check-valve. Easy to see the PWB after pulling the outside furnace access panel.

[richfaa]

We had same as PVcoach. Check that board.

[DonandBonnie]

We had a similar problem. The thermostat manual had instructions for a system reset. The reset fixed our problem.

We've also found that once our system starts working, whether it is heat or AC, the thermostat wants to keep the system working until the set temperature is achieved.

[DQDick]

i believe for your model the thermostat reset would be as follows:
1. Turn slide switch to OFF position
2. Press and hold MODE (top) and ZONE (bottom) buttons
3. Turn slide switch to ON position
4. Release MODE and ZONE buttons after about 2 seconds
5. FF appears indicating reset is complete

[emptynest]

Turning the temp down on the heater setting seems to have done the trick. I also followed up with the reset per the suggestion. Thank you all for the advice.

[psomers]

I have a Mountaineer so mine may be different. If blower is set to anything other than auto in heat position, furnace blower will run with A/C on.

[psomers]

Think you need to pay no attention to my last post. Mind is going. More I think about it the problem was the A/C fan ran in furnace mode. If fan is set to anything other than auto the A/C fan runs in furnace mode.