how do I rectify the fault as detailed below?
Vaillant vcw gb242 eh central heating problem?
No hot water, intermittent when air temp drops?
my vaillant boiler is saying a code com on it ?
How do I fix f22 error on my Vaillent Ecotec Plus boiler?
Vaillant igniting issue ( domestic ) not CH?
Vaillant Ecotech Plus 831 F22 fault?
Vaillant ecomax 828/2 e water pressure sensor?
Vailliant turbo max plus 824e?
Vaillant ecotec 831 plus?
Problem with the pressure in combi boiler?
how to fix water pressure its down at bottom of grey part?