E-43
Samsung Monitor Door Switch / Interlock Error

Microwave displays 'E-43' and may show 'door' related error, will not run.

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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

Failed monitor switch, Incorrect switch alignment, Shorted switch contacts, Damaged latch bracket

How to Fix / Troubleshooting

Critical safety warning: The monitor switch is a fail-safe device that prevents operation if other switches fail. Incorrect handling can create a dangerous condition. Always unplug the microwave and do not attempt to bypass this switch.

  • Do not force door: Avoid slamming or forcing the door, which can worsen alignment.
  • Visual check: Look at the door and front frame for obvious warping or damage that might prevent proper latch engagement.
  • Professional service only: Monitor switch diagnosis and replacement should be performed by a qualified technician who can verify correct interlock operation and adjust the latch system.
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Repair Difficulty

Professional Required 5/5

Required Part

Monitor Door Switch / Door Latch Bracket
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