Here we have a Dometic 3 button thermostat (3316250.712) would intermittently turn on at night and stay on regardless of set temp. The customer would wake up in a sauna. Adjusting the temp down under current temp on the thermostat didn’t change the result. I like to call this the run a way furnace. The replacement part we installed (3316230.714) is a kit and comes with the 3 button thermostat and control box.