Have you set the Jumper ?
hi,
I have tried with the jumper, and without the jumper.
I did manage yesterday to get some water through the system, but finally the flow got down to zero.
Since then, every time I try to start again, this is with the right profile full of coolant, the flow will be zero from the beginning.
Is it possible that the pump is full of air trapped and I can't seem to get it out?