can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
no heating water?
how do I vent the heat exchanger?
Hot water comes and goes!?
my vaillant boiler is saying a code com on it ?
how to fix water pressure its down at bottom of grey part?
Vaillant vcw gb242 eh central heating problem?
how do I rectify the fault as detailed below?
How do I fix f22 error on my Vaillent Ecotec Plus boiler?
my boiler will no work?
resetting thermostatat?
Vaillant condensing boiler ecoTEC plus?
Vaillant eco plus 531 boiler?
Vaillant Ecotech Plus 831 F22 fault?