We recommend using a rotary controller with your diesel heater as the LCD controller can be a bit tricky to use. The standard inclusion in our kits is a rotary controller, which is simply a turn dial to adjust the temperature and heater and fan buttons.
If needed, we can substitute an LCD controller with your kit. These controllers use either a temperature control or a heat output control. Temperature control is one red and one green light on the control switch. Using this option, the heater will cycle on and off – drawing 12.5 amps on start up and then going to approximately 2.5 amps on run. When using heat output control – two green lights on the control switch – the heater does not cycle on and off. Instead, it will run continually at the selected amperage, between 1.5 and 2.5 amps, saving on battery power.