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by Robh1990
Mon Mar 23, 2020 8:38 am
Forum: Plumbing Forum
Topic: Central Heating Pump High Pitched Noise
Replies: 3
Views: 6241

Re: Central Heating Pump High Pitched Noise

Hi Robh1990, Sounds like you have air in the pump - you need to remove the central bleed screw completely to clear the air, have a cloth ready to catch the escaping water. Regards, S Turn the pump off first? Do I need to close off the water either side of the pump? Or just open the screw until it r...
by Robh1990
Fri Mar 20, 2020 2:22 pm
Forum: Plumbing Forum
Topic: Central Heating Pump High Pitched Noise
Replies: 3
Views: 6241

Central Heating Pump High Pitched Noise

Hi guys I've got a DAB Evosta central heating pump and lately its been making a high pitched squealing kind of noise which travels through most of the heating system. I've turned the bleed screw and doesn't seem to be any air in there. Bled all the radiators.
Any ideas, I'm grateful.
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