air in system

JackF · 6 Nov 2006

I have a fully pumped open expansion tank system .
At high or medium pump speed it is sucking in air but if I turn it down to lowest speed it stops sucking air.
Any idea whats wrong.

corgiman · 6 Nov 2006

possible blocked cold feed

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air in system

JackF

corgiman

DIYnot Local

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