Cycle motor in waxer manual mode in diagnostics and verify 120VAC at the P6 connector on Wax/Lift PCB.
If voltage exists, verify that the cable from the Wax/Lift PCB to wax motor has continuity.
If continuity exists, replace wax motor.
No continuity, replace the wire harness.
If no voltage exists, replace the Wax/Lift PCB.