No heating

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Hi,

I have just drained the central heating system due to a very large amount of sludge in the radiators (we have only just brought the house). I have a baxi bermuda 552 boiler, which is now not starting (pilot light is working), and when it does which is very rarely, it only does for a very short time, i.e 30seconds. I am getting no hot water or heating (knew I should have left this till the summer!!!). The pump is making noises when switched on and expelling water into the expansion tank. All the rads have been bled.

Has anyone got any ideas?
 
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DP

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Get a heating engineer before it is too late. You have what is known as pump over. Plumbing is incorrect
 
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The pump is only expelling a little water into the expansion tank, only when it is initailly turned on. I can't believe there is that much wrong with the plumbing as this house is an old house. Could it not just be an air lock?
 

DP

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I gave the advise as a heating engineer. You as a layman do not need to follow it. If there is ANY water spilling over into the header tank, I can assure you the plumbing is incorrect. Why do you think the boiler only burns for 30 seconds- because the system has sludged up due to constant spillover. This results in oxygenated water circulating leading to more corrosion. As a result spillover is reduced so is circulation.
 
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It was not doing this before the system was drained? Can anyone recommend a good heat engineer in the Swansea area as we are new to the area.

Thanks for your help.
 

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