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marek196c t1_j20yp10 wrote

But you removing the air from all the radiators in the system?also what is the top point in the system?

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MadMic1314 OP t1_j212j9i wrote

Yep, did each rad by closing them all and opening one at a time, starting downstairs and moving up. Defo fully cleared the entire system.

Top point is the towel rad in the bathroom, but air seems to find its way to one rad in the master bedroom over the others.

There is an auto air valve on the HW tank, if that helps

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marek196c t1_j21jv0s wrote

Valve works as should? Edit. When the last rad was fitted, a lot of water escaped?

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MadMic1314 OP t1_j23igh6 wrote

Values all work, all new rads have had new valves fitted.

Used squeeze offs on the plastic pipe so didn't lose much water at all when fitting.

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marek196c t1_j23t4sc wrote

Remotely idk what else to suggest you, maybe try to fill up litte more water (if not automatically done)

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MadMic1314 OP t1_j23w7vm wrote

Thanks for your assistance. I'm going to go with my theory of it needing more inhibitor and add another litre of the same stuff I put in it before.

The pressure of the system is at 1.5 bar cold so that's all good.

Glad it's nothing obvious. Just puzzled why it was ok before with less... Weird!

If it still does it, I'll try a full drain and refill. Then call a plumber 😄

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