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After you turn the central heating off, how long should the pump run ? I have noticed mine will continue to run for several hours, but if i let the hot water tap run for a while its stops sooner, is this normal, any idears :?:

Thanks for replies so far. I have checked header tanks and they work o.k. and full of water. When you say bleed the pump i assume this is by relesing the large screw on the pump it's self. I have done this and just water came out. I tried the heating this morning (sunday), and after several...

Yes i've tried bleeding the radiators but this has not helped, the pilot light also keeps going out, and the boiler is making some very load banging noises, could the pump be broken even through i can feel it vibrating???

I have a baxi wall mounted heater which seems to be working fine in that the hot water is extreamly hot, but the radiators are not getting hot, and there is a lot of banging from the boiler , any idears. The pump seems to be running