thermostat/furnace issue

[HhowieE24]

hey every knowledgeable person,
assistance required.
2018 Montana 3950BR
Furnace was working great until this AM when it shut down.
Did not notice until it got cold over breakfast.
Checked thermostat and furnace option or heat pump not there, only AC available.
Any ideas where to look for solution appreciated.
Thanx

[Gonefishing]

I would think if nothing showing that it’s a fuse. Might check them. Just guessing

[HhowieE24]

unbelievable..........I check everything that I knew how to check. even the sail switch, the batteries, the fuses, propane, took cover off thermostat to get model# so I could google that to check for new one, put cover back on, forgot #, take off again to get #, replace cover, the thermostat worked!
What the heck!!??
Thanks for the help

[Kyle and Lisa]

We removed our covers 6 1/2 years ago, less issues,they are sensitive.

[Rider13]

Originally Posted by HhowieE24

hey every knowledgeable person,
assistance required.
2018 Montana 3950BR
Furnace was working great until this AM when it shut down.
Did not notice until it got cold over breakfast.
Checked thermostat and furnace option or heat pump not there, only AC available.
Any ideas where to look for solution appreciated.
Thanx

Your thermostat got changed to cool only. To change it with it off touch the mode and down arrow at the same time the display should show Co, d1 or d2. Co is cool only, d1 or d2 will get the full functionality back.