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can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
Advice?
Vaillant 828E - no hot water?
No hot water, intermittent when air temp drops?
my vaillant boiler is saying a code com on it ?
my boiler will no work?
Boiler over pressure on the hot-water side?
Vaillant ecomax 828/2 e water pressure sensor?
how do I rectify the fault as detailed below?
Problem with the pressure in combi boiler?
Vaillant Ecotech Plus 831 F22 fault?
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