Central Heating bangs loud then bolier goes out ?

by **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 ?.

by **htg engineer** » Mon Feb 23, 2009 6:56 pm

Boiler is overheating - check stat.

htg

by **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.

by **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 ?.