F09
Hotpoint-Ariston EEPROM / Configuration Memory Error

Error F09; freezer may not respond to temperature changes or may reset unexpectedly.

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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

Corrupted EEPROM on control board, Power surge damage, Faulty main control firmware

How to Fix / Troubleshooting

Safety first: Disconnect power before accessing the control board.

  • Power cycle: Unplug the freezer for 10–15 minutes and reconnect. Sometimes the control can reload default parameters.
  • Check supply voltage: Ensure the outlet provides stable voltage and is not shared with heavy-load devices causing spikes.
  • Factory reset (if available): Consult the user manual for any key combination to reset settings to factory defaults.
  • Replace control board: If F09 persists, the EEPROM or firmware is likely damaged. Replace the main control board with the correct Hotpoint-Ariston part.
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Repair Difficulty

Hard 4/5

Required Part

Main Control Board
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