1970's Duo-Therm trailer furnace
. Worked well until a very cold wet trip, around midnight the temperature was close to 90F in the cabin, furnace
thermostat appears to have failed in the on position.
This is a Duo-Therm 11HRU LPG unit without external thermostat.
Question 1: Where is the thermostat hidden?
Question 2: Where is a replacement available from?