can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
Advice?
Vaillant igniting issue ( domestic ) not CH?
how to fix water pressure its down at bottom of grey part?
No hot water, intermittent when air temp drops?
my boiler will no work?
How do I fix f22 error on my Vaillent Ecotec Plus boiler?
What does f.25 mean?
Vaillant condensing boiler ecoTEC plus?
Vaillant eco plus 531 boiler?
Vaillant Thermocompact Fault?
vaillant ecoTEC plus boiler fault code - how to fix?