I have fitted a Webasto FBH (Fuel burning heater.) without a timer or remote and everything is working as it should.
Because I have no way of useing it as a parking heater as is I decided to fit a manual switch by earthing pin 3, as others have.
My question is;
If I use my manual switch to run the FBH, the temperature is below 5 deg. so the thermo switch fuctions and I start the car and drive without turning the manual switch off will any damage be done to anything ?