how do I rectify the fault as detailed below?
how to fix water pressure its down at bottom of grey part?
Water dripping from opening at top of pump?
my vaillant boiler is saying a code com on it ?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Hot water comes and goes!?
Vaillant Thermocompact Fault?
Vaillant igniting issue ( domestic ) not CH?
How many factors causes f22 fault?
Vaillant vcw gb242 eh central heating problem?
Vaillant 630 error f 85?
Vaillant eco plus 531 boiler?