F12
Bertazzoni Low Voltage / Power Supply Fault

Clock and display reset intermittently; oven may shut off during cooking and restart.

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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 power connection at terminal block, Failing internal low-voltage power supply on control board, Overloaded circuit or voltage drop, Faulty line filter module

How to Fix / Troubleshooting

Safety first: Turn off power at the breaker before opening the rear cover or terminal block area.

  • Check household circuit: Ensure the oven is on a dedicated circuit with correct amperage and that the breaker is not tripping or overheating.
  • Inspect terminal block: Remove the rear cover to access the power terminal block. Tighten all line and neutral screws firmly. Look for signs of heat damage or melted insulation; replace the block if damaged.
  • Inspect power cord (if applicable): For freestanding ranges, check the cord for burns or loose connections at the plug.
  • Evaluate control board power supply: If external connections are solid, the internal power supply on the main PCB may be failing. Replacement of the control board is typically required.
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Repair Difficulty

Hard 4/5

Required Part

Main Control Board (Oven PCB)
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