E11
MasterChef
EEPROM / Control Memory Error
Microwave displays E11 and will not start; sometimes occurs after a power outage or surge.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Corrupted control board firmware, Failed EEPROM chip, Power surge damage to logic circuit, Loose control board connectors
How to Fix / Troubleshooting
Safety first: Unplug the microwave before removing the control panel.
Steps:
- 1. Hard reset: Unplug the unit for at least 15 minutes to allow capacitors to discharge and the control to fully reset. Plug back in and check if E11 clears.
- 2. Check power quality: Avoid using long extension cords or shared outlets with heavy appliances. Voltage dips and spikes can corrupt memory.
- 3. Inspect control connections (experienced DIYers): Remove the control panel and verify that all harness connectors to the main control board are fully seated.
Next steps: If E11 persists, the control board firmware or EEPROM is likely damaged. Replacement of the main control board is typically required.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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