Product Information: The air pressure switch enables safety protocols which ensure the fan is working correctly. It ensures that, if the fan fails within the boiler, there would not be a build up of noxious gases with no means of venting them. The PCB closely monitors the air pressure switch to make sure it is fully operational before the unit is fired up, preventing the appliance from starting without one of its key safety instruments.

This part is present in 10 different boilers in the Potterton range including the Potterton KINGFISHER MF CF , KINGFISHER MF RSL , KINGFISHER MF CFL , KINGFISHER MF RSL , KINGFISHER MF CFL .