Product Information: The fan is the component that introduces fresh air in to the combustion chamber, allowing the gas to be burnt correctly. It also clears the combusted gas after the combustion process is complete. The boiler has safety parameters in place to make sure no gas can be passed through to the main burner if the fan is not functioning correctly.
This part is listed against 2 boilers on our website, The Vaillant VC 142 E , VC 112 E .