Unplug the unit, remove the two screws back of control panel. then, flip the control panel away from the cabinet. Remove the wire harness from the door switch and pry out the two springs that hold the cabinet and remove it. Flip back the control panel and remove the knob on the control panel. Remove the wire harness from the control panel and the plastic tubing and push the tab and turn the water level sensor clockwise to remove it.Replace with a new water level sensor switch and reverse all the process. She was so happy and impress . Thanks for the video online it rely helps a lot.