I have a Potterton Neataheat boiler with SUNVIC digital thermostat, controller etc. The hot water works fine and the heating is permanently switched on and is controlled by the Thermostat. Recently the Thermostat clicks and shows it thinks the boiler is lit but nothing happens. If you switch the Thermostat on and off enough times eventually you hear the motorised valve turning and the boiler comes on.
It is a new Thermostat with new batteries.
Any thoughts would be really appreciated.
It is a new Thermostat with new batteries.
Any thoughts would be really appreciated.