E9
Aobosi
EEPROM / Memory Data Error
E9 error displayed and the wine cooler may shut down or operate erratically after a power event.
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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 control board firmware, Voltage spike or surge, Failed EEPROM chip on main PCB, Incompatible replacement control board
How to Fix / Troubleshooting
Safety: Disconnect power before handling the control board. Static discharge can damage electronics.
- Power reset: Unplug the cooler for at least 15 minutes to allow capacitors to discharge. Plug back in and see if the E9 code clears.
- Check power quality: If the error followed a power outage or surge, connect the cooler to a surge-protected outlet or voltage stabilizer to prevent recurrence.
- Factory reset (if supported): Some Aobosi models allow a control reset via a button combination (consult the user manual). Perform the reset to reload default parameters.
- Inspect control board: Remove the rear panel and locate the main PCB. Look for burn marks, swollen components, or corrosion.
- Replace main PCB: If E9 persists, the memory or firmware on the board is likely corrupted. Replace the main control board with the exact Aobosi part number for your model.
- Professional reprogramming: On certain models, the new board may require configuration or programming by an authorized technician.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board (with EEPROM)
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