Originally posted by 282F2529460 link=1254118690/0#0 date=1254118690
On the top of your group head is a filter and a jet(restricter) have you check that this are not block, sometimes if the restricter is block will not allow the water to come.
Another thing that you can try is by setting the OPV at 12 bars and see how it reacts. Put the second hose and measure the amount of water return so you can have a better idea if is that or not
Good luck
Renzo
Di Bartoli Home Barista Centre

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