Customer Questions and Answers for User Interface Control Board by Ge

Bob, Make sure the machine is grounded and polarized, as an electrical issue could also cause the issue. Per your description, it sounds like a CSM-type of issue. A CSM is a protective device that is part of GE Dishwashers and located on the main control board. This device is designed to trip if current leakage to ground is above 20mA ± 5mA is detected. The CSM functions similarly to commercially available GFCIs. Cycling power to the dishwasher will also reset the CSM, allowing consumers to reset it without a service call. The cause of tripping is likely external to the board itself. The board should only be replaced after all other diagnostic tests have been completed and all other potential causes have been ruled out. Potential causes of current leakage to ground could be due to water leaking onto a live component, a component malfunction, or a fault within the wiring harness.

Hello Todd, the flashing green light on the lower control board indicates it has lost data communication with the control panel board, since there is 13.5vdc there then one or more of the data wires in the door wire harness have broken, the harness is part WD21X24414.

Rod, This issue would most likely be caused by a faulty UI board that will need to be replaced.

Rod M, Based on the information provided the flashing light may indicate a tripped CSM (Current Sense Module). Using the tech sheet packaged with your machine place the machine into the service diagnostics mode.