** WARNING 702460 ** Beam element %7d has no circuit attribute assigned to it. Check that a coolant inlet has been assigned to this circuit.
The cooling network solver begins at the inlet and traces the cooling circuit all the way to the outlet. In this case certain parts of the cooling circuit are not connected to an inlet. The Cool analysis will continue, but these unaccounted for circuit elements will lead to very poor cooling results and need to be fixed.
Ensure that all circuit elements are connected to an inlet node.