Originally Posted by I M Lost
Old Biscuit It does have some type of sensor in the drain plug hole. It is in series with the thermostat. However it is only thermostat wire. I don't see how it could be an electric element
Drain plug SHOULD be a Nylon Plug.
No wires/nothing connected to it
That is an aftermarket heat rod....
AC goes to the t-stat then to the heater rod.
Low wattage heat rod ---used as alternative to propane heating