Hi, I have a combination boiler, sometimes it will turn its self on for a short time for no apparent reason, (its not a pre heating boiler BTW), no taps running, CH not on. It normally happens at night. Any ideas why it would do this?
you need a boiler engineer. there is clearly a fault with a sensor somewhere. could be one of a number of things that have already been stated, but without actually looking at it, it's impossible to say.
Hi sorry for not replying I've been busy lately, my british gas friend checked the frost sensor and said he thinks thats the problem, he has swapped it for a new one now so I will have to wait and see if the problem goes away.
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