[Gene]

One of possibilities is the motor drive system experienced a momentary loss of neutral feed from the power cord to the motor control board. The neutral line for the motor control board passes across the water valve solenoids. Neutral to the motor drive system can be momentarily lost If there is poor crimping of any of the wire terminals in this circuit.

Pull each terminal of the white wire harness connected to each water valve solenoid and verify the wire is properly stripped and crimped to the metal terminal connector of the wire harness. Make sure the wires fit snug on the terminals of the water valve solenoids.

Gene.