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HTHALLY

Boiler Fires Up When Everything Switched Off

I have my heating & hot water switched to off. The boiler unit keeps 'firing up' for about 1 minute then stopping, it repeats this approx every 2 minutes?? It is a vaillant ecotec plus. The temp on...
20:08 Wed 20th Dec 20174 answers, last by malagabob 09:38 Thu 21st Dec 2017

Only 1 question