how do I rectify the fault as detailed below?
How can I fix my Vaillant turbomax 828 ??
my vaillant boiler is saying a code com on it ?
How many factors causes f22 fault?
Water dripping from opening at top of pump?
No hot water, intermittent when air temp drops?
how to fix water pressure its down at bottom of grey part?
Vaillant eco plus 531 boiler?
Vaillant 630 error f 85?