Potterton fan kit for 30 HE is the component that injects fresh air into the combustion chamber, allowing the gas to be burned correctly. It also clears the toxic gas after the combustion process is complete. Your boiler's safety parameters ensure that no gas passes through to the main burner if the fan is not functioning correctly.
Voltage is 230 V
Technical specification
Manufacturer Model No5112318Brand NamePottertonCompatible WithPotterton SUPRIMA 30 HE