Furnace Won't Turn Off Automatically

[Eusefull]

I have an 03 Alpine Coach with a Suburban furnace and while the thremostat operates perfectly on the AC side of things for both zones....when I switch the "Mode" to Furnace (as seen in the LED screen)....I set the temp, but the furnace continues to run and will not turn off once the room reaches a nice toasty temp. I have dropped the setting to what is surely lower than the setting I use for the furnace and even wait 3-5 minutes for the thermostat to be triggered off....but it does not seem to effect the turn off.

Any ideas or am I missing a step in setting the thermostat while in furnace mode?

Thanks - Eusefull

[Eusefull]

I have an 03 Alpine Coach with a Suburban furnace and while the thremostat operates perfectly on the AC side of things for both zones....when I switch the "Mode" to Furnace (as seen in the LED screen)....I set the temp, but the furnace continues to run and will not turn off once the room reaches a nice toasty temp. I have dropped the setting to what is surely lower than the setting I use for the furnace and even wait 3-5 minutes for the thermostat to be triggered off....but it does not seem to effect the turn off.

Any ideas or am I missing a step in setting the thermostat while in furnace mode?

Thanks - Eusefull

[dgerstel]

Eusefull,

When the thermostat calls for heat the furnace fan comes on and keeps running until after the burner shuts off and the heat exchanger cools down. On my 2002 coach I found that since the sensor for the furnace was way up front over the driver, the temp by the dinette was higher that at the sensor. This was after I had modified the heater ducting to deliver more heat to the front of the coach. When I got the coach, the front was cold and the bedroom hot. I usually only set the thermostat to about 67 to 68 degrees, sometimes even lower on start up. If you find the front of your coach cooler by a lot than the rear you may have to set your thermostat even lower yet. On initial heat up in the morning, until the temperature in the coach stabilizes, it still gets hot in the dinette area even after the burner turned off until the fan shut off.

Dale