E90
Xiaomi
Communication / Configuration Error
Washer-dryer shows E90 and is unresponsive or stuck, often after a power surge on Xiaomi combo washer-dryer.
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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, Communication failure between display board and main board, Loose harness between boards, Incompatible or replaced PCB not configured
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing control boards.
- 1. Power cycle: Unplug the machine for at least 10 minutes, then reconnect. This can clear transient communication errors.
- 2. Check for moisture: Inspect the control panel area for signs of moisture ingress. Dry thoroughly if present.
- 3. Inspect board connections (advanced): Remove the top cover and control panel to access the Xiaomi main and display PCBs. Ensure all ribbon cables and connectors are fully seated.
- 4. Firmware/configuration: If a board was recently replaced, it may require Xiaomi-specific configuration or firmware update, which typically must be done by an authorized service center.
- 5. If E90 persists: Replacement of the main control board or display board may be necessary. Professional service is recommended.
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Repair Difficulty
Professional Required
5/5
Required Part
Xiaomi Main Control Board
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