E90
Little Swan
Configuration / EEPROM / Communication Error
Washer shows E90 and is unresponsive or stuck at startup.
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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, Incompatible or replaced PCB not configured, Loose display-to-main board harness, Firmware fault
How to Fix / Troubleshooting
Safety first: Unplug the washer before accessing control panels.
- Power reset: Disconnect power for at least 5 minutes, then reconnect to see if the error clears.
- Check control connections: Remove the top panel and control console. Reseat the ribbon cable and connectors between the display board and main PCB.
- Configuration check: If the main PCB was recently replaced, it may require model-specific configuration using service mode or a programming tool. Refer to Little Swan service documentation.
- Board replacement: If E90 persists, the main PCB or display board may be defective and should be replaced as a matched set when required.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board (PCB)
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