can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
how do I rectify the fault as detailed below?
Vaillant eco plus 531 boiler?
Vaillant condensing boiler ecoTEC plus?
Hot water comes and goes!?
Problem with the pressure in combi boiler?
my boiler will no work?
vaillant ecoTEC plus boiler fault code - how to fix?
Vaillant vcw gb242 eh central heating problem?
No hot water, intermittent when air temp drops?
Valiant thermostat , BMU-Err ?
Why is heating on at night?
Vaillant Ecotech Plus 831 F22 fault?
How do I fix f22 error on my Vaillent Ecotec Plus boiler?
Boiler over pressure on the hot-water side?