First time out in brand spanking new RV. Camped in the White Mountains National Forest in New Hampshire. Came to bed time, set the thermostadt to 55 degrees and went to sleep. 2:00 AM the furnace comes on. 2:02 AM the smoke alarm comes on. Not a pretty sight me hopping up to shut down the furnace and open the roof vents and turn on the fans. The unit was not filled with smoke, no odors I couldn't believe were just because 'new'. Aired out by 2:10, went back to sleep as the interior temperature approached 38 degrees. Turned thermostadt back on, same results, same comic episode.
Tried again at 7 AM, same. Got home after 250 mile drive. Same.