Oven displays F15 and beeps, often after a power cut or surge

Safety first: Disconnect power before removing the control panel.

Step-by-step checks:

• 1. Power reset: Turn off power for at least 15 minutes to allow the control to fully discharge, then restore power and check if F15 clears.
• 2. Check model configuration: If the control board was recently replaced, verify that the correct Zanussi part number was used and that any configuration procedure (jumper settings or programming) has been completed as per service documentation.
• 3. Inspect PCB for surge damage: Look for burnt components or discoloration near the microcontroller or memory chip.
• 4. Replace control board: If F15 persists, the main control board is likely faulty and should be replaced with a genuine, correctly coded Zanussi PCB.

Warning: Firmware programming typically requires manufacturer tools; do not attempt to flash unofficial firmware.