E9
Gree
EEPROM or Memory Error on Main Control Board
Dehumidifier shows E9 and will not start; sometimes occurs after a power surge.
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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 data due to power surge, Failed memory IC on main PCB, Poor solder joints on control board, Incompatible replacement control board firmware
How to Fix / Troubleshooting
Safety: Unplug the unit. This fault is electronic and not mechanical.
Steps:
- Extended reset: Unplug the dehumidifier for at least 30 minutes to allow capacitors to discharge. Plug back in and test.
- Power quality: Connect the unit to a properly grounded outlet. Avoid extension cords or power strips that may cause voltage drops.
- Visual inspection: Remove the control board cover and inspect the PCB for burn marks, bulging capacitors, or corrosion.
- Board replacement: If E9 persists, the main control board is likely defective. Replace it with an exact Gree part number match to ensure firmware compatibility.
- Surge protection: After replacement, consider using a surge protector to prevent future EEPROM corruption.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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