can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
how do I rectify the fault as detailed below?
Vaillant Thermocompact Fault?
no heating water?
resetting thermostatat?
how to fix water pressure its down at bottom of grey part?
Vaillant condensing boiler ecoTEC plus?
my vaillant boiler is saying a code com on it ?
Vaillant 630 error f 85?
Valiant thermostat , BMU-Err ?
Vaillant ecotec 831 plus?
Vaillant ecomax 828/2 e water pressure sensor?
Vailliant turbo max plus 824e?
Boiler over pressure on the hot-water side?
No hot water, intermittent when air temp drops?
How do I fix f22 error on my Vaillent Ecotec Plus boiler?
Vaillant vcw gb242 eh central heating problem?
Vaillant ecotec plus 630?