I have a Vaillant VRC470f and an ecoTec plus 428.
When I look at my "Cyl. Temp. Current" it says zero degrees. Does that mean the cylinder thermostat is not wired up correctly somehow, or is there some setting I need to change?
When I look at my "Cyl. Temp. Current" it says zero degrees. Does that mean the cylinder thermostat is not wired up correctly somehow, or is there some setting I need to change?