The Riello air pressure switch, also known as the APS is a safety mechanism used to ensure the fan is fully operational. The fan prevents a build-up of dangerous gases within the appliance, removing them safely. The air pressure switch is monitored by the printed circuit board, ensuring that it is fully functional. If the air pressure switch is not working correctly, the printed circuit board will restrict the appliance from firing up.
Fits multiple appliances
Technical specification
TypePressure SwitchManufacturer Model NoZ3006141Brand NameRiello