E9
Cavin EEPROM / Control Memory Error

E9 error code and the unit runs continuously or not at all, with erratic temperature control

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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 main PCB, Power surge damage, Failed microcontroller, Poor solder joints on memory IC

How to Fix / Troubleshooting

Safety first: Unplug the wine cooler before any disassembly.

Steps:

  • Power reset: Unplug the unit for at least 10 minutes to allow capacitors to discharge, then reconnect and check if E9 clears.
  • Check for moisture: Inspect the control panel and main PCB area for signs of condensation or water damage. Dry thoroughly if moisture is present.
  • Surge protection: If the error appeared after a storm or outage, consider using a surge protector once the unit is repaired or replaced.

Repair: EEPROM or firmware faults generally require replacement of the main control board with a pre-programmed Cavin PCB. Board-level reprogramming is not typically supported in the field.

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Repair Difficulty

Professional Required 5/5

Required Part

Main Control Board (with EEPROM)
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