This Product has been discontinued with no alternative and is no longer available as a result. The air pressure switch is a safety device which checks the fan is fully operational. It ensures that, if the fan malfunctions within the boiler, there would not be a build up of toxic gasses with no means of removing them safely. The printed circuit boa
Fits Multiple Heatline Appliances
Technical specification
TypeAir Pressure SwitchManufacturer Model NoD003200136Brand NameHeatline