The Potterton air pressure switch is designed for use in Potterton Suprima boilers. A vital safety device, an air pressure switch, ensures the boiler fan is working correctly and prevents a build-up of toxic gases with no means of venting them in case of a fan failure. The unit's printed control board (PCB) closely monitors the air pressure switch to ensure it's fully functional before firing the system up, keeping the appliance from starting without the presence and operation of key safety feat

Brand Name	Potterton