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My oil fired central heating system has stopped heating up stairs.The rads and pipes have been flushed out,when the system was refilled the upstairs rads heated ok untill the system was switched off for the night, the following evening when the boiler came on there was no heat upstairs. We have twice repeated the draining down and refilling of the system with the same results. Can you help?

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Since you have done a good job bleeding the system, I will suggest that the impeller on the pump is bad. Many times these will simply deteriorate in the volute causing the symptoms that you describe.

This looks like it is in the wrong forum. Try reposting this in the heating section of the FixYa web site to get more responses.

Posted on Jul 03, 2008

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