can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
Advice?
No hot water, intermittent when air temp drops?
how do I rectify the fault as detailed below?
Vaillant eco plus 531 boiler?
Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Vaillant Ecotech Plus 831 F22 fault?
Vaillant 828E - no hot water?
how do I vent the heat exchanger?
Vaillant F22 fault?
vaillant ecoTEC plus boiler fault code - how to fix?
How do I fix f22 error on my Vaillent Ecotec Plus boiler?
Vaillant ecomax 828/2 e water pressure sensor?
Boiler over pressure on the hot-water side?
how to fix water pressure its down at bottom of grey part?