my vaillant boiler is saying a code com on it ?
no heating water?
Vaillant vcw gb242 eh central heating problem?
how do I rectify the fault as detailed below?
Vaillant Ecotech Plus 831 F22 fault?
Valliant Eco tec 28?
No hot water, intermittent when air temp drops?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
how do I vent the heat exchanger?
resetting thermostatat?
how to fix water pressure its down at bottom of grey part?
Vaillant F22 fault?
Vaillant Thermocompact Fault?
Why is heating on at night?
can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
vaillant ecoTEC plus boiler fault code - how to fix?
Hot water comes and goes!?
Vaillant condensing boiler ecoTEC plus?