how do I rectify the fault as detailed below?
my vaillant boiler is saying a code com on it ?
How many factors causes f22 fault?
Vaillant eco plus 531 boiler?
vaillant ecoTEC plus boiler fault code - how to fix?
Vaillant Thermocompact Fault?
Vaillant vcw gb242 eh central heating problem?
resetting thermostatat?
Water dripping from opening at top of pump?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Vaillant condensing boiler ecoTEC plus?
No hot water, intermittent when air temp drops?