how do I rectify the fault as detailed below?
No hot water, intermittent when air temp drops?
Vaillant vcw gb242 eh central heating problem?
resetting thermostatat?
Vaillant Ecotech Plus 831 F22 fault?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Problem with the pressure in combi boiler?
Hot water comes and goes!?
my vaillant boiler is saying a code com on it ?
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