Product Information: The air pressure switch facilitates safety checks that ensure the fan is fully operational. It ensures that, if the fan fails within the boiler, there would not be a build up of toxic fumes 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 mechanisms.
This part is present in 13 different boilers in the Glowworm range including the Glowworm MICRON 120 FF , ULTIMATE 50 , ULTIMATE 50 , ULTIMATE 60 , ULTIMATE 60 .