can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
Vaillant ecotec 831 plus?
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my boiler will no work?
Boiler over pressure on the hot-water side?
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my vaillant boiler is saying a code com on it ?
No hot water, intermittent when air temp drops?
Vaillant ecotec plus 630?
Vaillant vcw gb242 eh central heating problem?