Have an additional diesel heater which should autostart when temp below 8 celcius outside and water temp below 40 or something. Have a switch to turn the thing off, but no indication of startup. It takes ages to get normal temp when its cold outside as now in Norway. Where is this burner located?? I will try to feel at the water hoses if there is any temp there or checking any fuses if I know where to look. Would be happy if helped with some adwise.
RD