my vaillant boiler is saying a code com on it ?
no heating water?
Vaillant vcw gb242 eh central heating problem?
Water dripping from opening at top of pump?
What does f.25 mean?
Vaillant condensing boiler ecoTEC plus?
How many factors causes f22 fault?
Vaillant 828E - no hot water?
Boiler over pressure on the hot-water side?
how do I rectify the fault as detailed below?
Vaillant ecomax 828/2 e water pressure sensor?
how to fix water pressure its down at bottom of grey part?
Hot water comes and goes!?
Vaillant igniting issue ( domestic ) not CH?
Vaillant Thermocompact Fault?