How to Fix LG Microwave Error E-11

Error Code: E-11 Difficulty: Hard

Problem: There is a touchpad error, indicating the control panel is not responding correctly.

How to Fix E-11 Error (Step-by-Step)

1. Disconnect the microwave from power. This is extremely important as microwaves contain high-voltage capacitors that can be dangerous.
2. Remove the outer cabinet to access the internal electronics and confirm the error stays cleared during a full test cycle.
3. Locate the main control board (the main circuit board with many connectors) and the inverter board (a separate board that powers the magnetron).
4. Visually inspect both boards for any obvious signs of damage, such as burn marks, bulging capacitors, or loose connections.
5. Check all the wire harness connections between the main board and the inverter board. Unplug and firmly reseat each connector to ensure a solid connection.
6. This error often indicates a communication failure between the two boards. If all connections are secure, the most common culprit is a faulty inverter board.
7. If replacing the inverter board does not fix the error, the main control board is the next most likely component to have failed and will need to be replaced.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Next Steps and Parts

Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.