February 25, 2017 - 10:35 pm

F22 Meaning:  According to the Vaillant Installation and Service book, the F22 fault code means ‘Safety switch-off: low water pressure’ F22 Cause:    No or too low water pressure in the boiler, water pressure sensor defective, cable to pump or water pressure sensor loose/not connected/defective.   F22 Fix:   The usual remedy to this is making […]

July 17, 2016 - 3:04 pm

A combi (or combination boiler) is one that combines hot water production and space heating production into one package or appliance. It is commonly installed in properties where there is limited space for a separate hot water cylinder. Combi boilers have become highly prevalent in UK homes as hot water is generated instantaneously whereas in […]