My furnace is blowing out cool air

[TLC]

I just moved in my camper and it's my 1st one. I don't know what model it is it's a coug I think 2005. (Waiting for title) The heat had been working fine but when I put in the new propane tank it's now no longer blowing out heat. Any suggestions? Could it be the pilot light.

[chuckster57]

Welcome to the forum!

There isn’t a pilot light. Turn the thermostat off. Then go to the propane cylinders and turn them off. Undo the hoses from the cylinders, and then put them back on. Turn the propane on VERY SLOWLY and then light the stove. Once the 3 burners are operating, try the furnace again.