can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
how do I rectify the fault as detailed below?
Problem with the pressure in combi boiler?
Boiler over pressure on the hot-water side?
Hot water comes and goes!?
How do I fix f22 error on my Vaillent Ecotec Plus boiler?
No hot water, intermittent when air temp drops?
how to fix water pressure its down at bottom of grey part?
Vaillant ecomax 828/2 e water pressure sensor?
Vaillant Thermocompact Fault?
how do I vent the heat exchanger?
vaillant ecoTEC plus boiler fault code - how to fix?
Vaillant 828E - no hot water?
Valiant thermostat , BMU-Err ?
Vaillant vcw gb242 eh central heating problem?