I am using a T3 cell. The arrows on the switch are lined up. I will check the connections, but the board is new. When I hold the flow switch and manually engage it the system goes to generating. It seems that the water isn't enough to make the connection engage in the pipe, but with the flow switch out the water comes gushing out. It doesn't see to have a block in the line and the pressure is the same as it's always been.