E90
Hisense
Configuration / Communication Error
Washer shows E90, often after a power outage or surge, machine unresponsive or erratic
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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, Incorrect configuration data, Loose display-to-main board harness, Power surge damage
How to Fix / Troubleshooting
Safety first: Unplug the washer before accessing control electronics.
- Power cycle: Leave unplugged for 10–15 minutes, then reconnect. This can reset some configuration errors.
- Check harnesses: Remove the control panel and top cover. Inspect and reseat the ribbon cable between the display board and main PCB.
- Surge protection: If E90 occurred after a storm or outage, consider using a surge protector in the future.
- Service mode (technician): Some Hisense models allow reconfiguration via service mode. This should be done only with official documentation.
- If unresolved: The main control board may need replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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