Product Information: This part is located within the air pressure switch section. The air pressure switch enables safety protocols to ensure the fan is working correctly. It ensures that if the fan fails, 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 functional before the unit is fired up, preventing the appliance from starting without one of its key safety mechanisms.
This part is present in 15 different boilers in the Vaillant range including the Vaillant TURBOmax VUW 242/1E , TURBOmax VUW 242 E , TURBOmax VUW 282/1E , TURBOmax VUW 282 E , VU 142/1 .