Dishwasher will not start a cycle and displays F1E1 on the control panel.

Safety first: Unplug the dishwasher or switch off the circuit breaker before removing any panels.

Step-by-step checks:

• Power reset: Turn off power at the breaker for 5 minutes, then restore power and try to start a cycle. Sometimes the control locks up and a hard reset clears the fault.
• Check keypad/buttons: Make sure no buttons are stuck. Press each key several times. If the display responds erratically or multiple keys seem active at once, the user interface may be shorted.
• Inspect control board: Remove the inner door panel to access the main control board. Look for burnt spots, melted areas, or a burnt smell. Check that all harness connectors are fully seated.
• Test incoming power to board: With power ON (only if you are trained and have a multimeter), verify correct voltage at the control board input. If power is present but the board does not power the display or respond, the board is likely defective.

Repair action: If a reset does not clear the code and wiring looks good, replace the main control board (and user interface if visibly damaged). This repair often requires removing the inner door panel and transferring each wire harness one by one to the new board.