E9
TaoTronics EEPROM / Memory Error

Dehumidifier displays E9 and will not run

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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 firmware in main control PCB, Failed EEPROM chip, Voltage spike damage to control board, Poor connector contact during power-up

How to Fix / Troubleshooting

Safety: Unplug the unit before any disassembly.

Steps:

  • Basic reset: Unplug the dehumidifier for at least 15 minutes to allow capacitors to discharge. Plug back in and test.
  • Check power quality: Ensure the unit is plugged directly into a wall outlet, not a low-quality extension cord or power strip. Avoid outlets with known flickering or brownouts.
  • Inspect PCB: Remove the control panel housing and visually inspect the main control PCB for burn marks, corrosion, or swollen components.
  • Connector reseat: Reseat all harness connectors to the main PCB to ensure good contact.
  • Firmware/board replacement: TaoTronics control boards are typically not field-reflashable. If E9 persists, replace the main control PCB with the correct part for your model.
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Repair Difficulty

Medium 3/5

Required Part

Main Control PCB
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