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Venting after water change

Kathi04

March 14, 2021 02:46 pm

Unregistered

Hello everyone, I would like your help please.
I have recently purchased a De Longhi Ecam 23.420 and am so far actually very satisfied with it.
There is only one problem: whenever I refill and insert the water tank and want to make myself a coffee, no coffee comes out but the coffee machine rattles extremely so that you have to vent it before you can draw coffee normally again.
From my previous coffee machines I know that it can happen that you have to bleed in between, but not with every water change.
Does anyone know what this could be or if it is normal with this machine?

Thanks in advance! LG

Kathi