Oven displays E-84 and may not start or may behave erratically.

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.

Possible Causes

Corrupted configuration data in PCB, Incorrect board installed for model, Failed memory sector, Power surge

Safety first: Disconnect power at the breaker.

Power cycle: Turn power off for 10 minutes, then restore.
Check model compatibility:
- If the control board was recently replaced, verify that the correct Samsung part number for your exact model was installed.
Service mode (if available):
- Some models allow reconfiguration in service mode; this is typically for technicians only.
Replace PCB: If configuration cannot be restored, replace the main PCB with the correct part.

Hard 4/5

Main Relay Control Board

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