jastone502
New member
I have a 1401D , I found that when I shut engine off (fuel) and left key on that thermostat was ON! Started smoking. I have checked power at switch and circuit to thermostat getting power in run position and in pre heat position. I have looked at schematic and looks like there is no relay and possibly it should be getting power all the time. Kinda confusing. I just unplugged it until I figure it out.