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    Hot CH expansion tank!

    Not without needing to replace quite a bit of it - it's all soldered, and there's not much room for manouvre. Will give it a try over the weekend, though. If it was a blockage between the vent and the cold feed, how would hot water still be getting up the cold feed? I think that the hot water...
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    Hot CH expansion tank!

    Right - it goes : Pump - pumping downwards. From the pump, it goes up about 10cm of pipe to a T-junction. The straight on the T goes straight up into the attic and is the cold feed. The right angle part of the T goes through about 5cm of pipe into a brass cylinder (air separator, I...
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    Hot CH expansion tank!

    I don't think it's that - I've just unblocked the cold feed (earlier problem!), and confirmed that it's working by draining some water out the bottom of the system, and watching the water level in the expansion tank drop, so water's flowing down the cold feed...
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    Hot CH expansion tank!

    Hi, Hi all - hoping you can provide some guidance on a rather strange problem! I have a open vented CH system, with a feed and expansion tank in the attic, the hot water cylinder and pump in the airing cupboard on the first floor, and a boiler on the ground floor. The pump is mounted...
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    Whining Pump/No downstairs Heating

    Thanks for the advice - you were absolutely right - blocked feed pipe where it joins the main circuit, just above the pump. I've removed the blockage and the noise stopped. Tonight I've drained down the system and refilled with some cleaner in there - it's been on about 20 minutes and the...
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    Whining Pump/No downstairs Heating

    Thanks for the advice! Water did come out of the rads when I bled them, and I did check the F&E tank - it's full. The blocked feed pipe sounds like a possible cause - I've got a bottle of Calmag 3in1 cleaner, which I think is similar to the Sentinel Ferroquest? I'll drain down the system...
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    Whining Pump/No downstairs Heating

    Hi all - hoping you can provide some guidance on a rather strange problem! I have a open vented CH system, with a feed and expansion tank in the attic, the hot water cylinder and pump in the airing cupboard on the first floor, and a boiler on the ground floor. The pump is mounted vertically...
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