The air pressure switch is a safety device which checks 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 removing them safely.
Fits Multiple Heatline Appliances
Technical specification
TypeAir Pressure SwitchManufacturer Model NoD003200909Brand NameHeatline
Reviews
Heatline Air Pressure SWITCH2.2mB MK1 Only D003200909