E-91
Samsung Display-to-Power Module Communication Fault

Cooktop communication error between display and power module.

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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

Loose or damaged communication harness, Power module failure, Display board failure, Electrical noise or surge damage

How to Fix / Troubleshooting

Safety first: Turn OFF power at the breaker.

Reset and inspect:

  • Leave power off for 5 minutes, then restore and see if the error clears.
  • If it returns, disconnect power again and remove the rear panel.
  • Locate the communication harness between the display/control board and the cooktop power module and reseat both ends.
  • Inspect the harness for cuts, pinches, or burn marks.

Next steps: If wiring is intact and the error persists, either the display board or power module is defective. Due to the need for live testing and high voltages, have a professional perform further diagnosis.

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Repair Difficulty

Professional Required 5/5

Required Part

Cooktop Power Module
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