Purchased the above RV on March 6, 2024 and having trouble with the furnace. If it's really cold, the temp will increase about 5 degrees, then the furnace shuts off. If it's cool, and the furnace only needs to increase the temp a few degrees, it can do that and exceed the set point by 1 degree, then behaves normally (probably because it didn't overheat). Otherwise, the furnace overheats, shuts off and can only be started again by cycling through from HEAT to OFF to HEAT. I get that it's probably an overheating/limit switch thing, but where to start? Repairs: Home - replace thermostat Dealer (120 mile round trip) replace thermostat(s), something in the junction box. Thought it was fixed (it wasn't - it was too warm to challenge the furnace). 3 days later it got cold and same problem. Back to the dealer - ordered a board and replaced it - thought it was fixed - weather was mild and then it got cold and same problem. We're in touch with Alliance Service, but geez... the hours we've spent trouble shooting is exhausting and we're headed North soon. Ductwork looks fine, no obstructions in the intake/outlets. I'll go look at the vents upstairs one more time to be sure, but I'm at my wits end.