I have a 2022 A122s. Just got back from short trip in the California desert. It got cold at night, but when I turned on the furnace, after a couple of minutes the smoke alarm went off. I did not see or smell anything. I turned on the vent fan and cracked some windows but I did not help until I turned off the furnace. Tried again the next day, same result.
I can run a separate catalytic heater and the stove burners with no problem. I have only used the furnace before last year when I first bought the trailer. This was the smoke alarm on the ceiling, not the CO alarm under the table. Has anyone experience a similar issue?