combination boiler mystery


Postby arnauda » Fri Apr 24, 2009 6:22 pm

I have a combination boiler .I have switched the central heating off and have left the hotwater to come on twice a day. When the hot water comes on the radiators are boiling hot. What causes this? I have never experienced this in the past. :?:
arnauda
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Postby htg engineer » Sat Apr 25, 2009 4:56 pm

'I have switched the central heating off and have left the hotwater to come on twice a day'

Combi - water will only come on when the hot tap is opened.

Check what type of boiler/system you have and re-post.


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