Central Heating bangs loud then bolier goes out ?


Postby Birksy » Mon Feb 23, 2009 12:37 pm

My central heating system will run fine for about 45 mins, heating all the radiators fine. It then bangs very loud and the pump makes a noise and then boiler goes off, including the pilot light. I restart the bolier and it cuts in ok again but then bangs and stops again within abiut 15 minutes.
Is this due to the pump overheating ?. Is it a simple case of replacing the pump or is there poosibly another solution ?.
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Postby htg engineer » Mon Feb 23, 2009 6:56 pm

Boiler is overheating - check stat.

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Postby Steve the gas » Tue Feb 24, 2009 6:10 am

Could also indicate low system water content, do you have tanks in the loft? If so check the little one has water in it.
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Postby Birksy » Tue Feb 24, 2009 9:35 am

I have had a number of heating engineers looking at it. The boiler is in the garage but the banging is in the airing cupboard, is that still th boiler overheating. I have had the part reaplace on the boiler that regulates the heat ?.
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