It light s for two minutes then goes off and the red light comes on what dose mean thank you donna

Donna Austin, June 2017

It would greatly assist if you said on what appliance
My caravan has a red light for room heater a red light to mains water heater a red light that shows when tap on the fresh water pump is on and if it stays on indicates empty water barrel. The omnial directional arial unit has ted light when switched on.
So out of all those which is yours.

bobuk, October 2017