C-32
Samsung
User Interface to Main PCB Communication Fault
Oven displays C-32 and may not respond to temperature or mode selections.
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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 UI board connector, Damaged UI board, Faulty main PCB communication circuit, Electrical noise or surge damage
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before accessing internal components.
- Reset power: Turn power off for 5–10 minutes, then restore. Test operation.
- Inspect UI and main PCB connections:
- Remove the control panel and locate the connectors between the UI board and main PCB.
- Unplug and replug each connector, ensuring a snug fit.
- Look for burnt pins, discoloration, or cracked solder joints.
- Check for surge damage: If the error appeared after a storm or power event, the PCB may be damaged.
- Replace suspect board:
- If the display works but commands are not executed, the main PCB is suspect.
- If the display is blank or garbled, the UI board may be faulty.
- Due to the complexity of board-level diagnosis, consider professional service for final confirmation and replacement.
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Repair Difficulty
Hard
4/5
Required Part
Main Relay Control Board
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