E90
Casarte
Main Control Board Communication / Configuration Error
Washer displays E90 and is unresponsive or stuck, often after power issues or firmware problems
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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, Incompatible or replaced PCB not configured, Internal PCB failure, Loose internal connectors
How to Fix / Troubleshooting
Safety first: Unplug the washer before opening the control panel.
- 1. Power cycle: Unplug the washer for 10–15 minutes, then plug back in and check if E90 clears.
- 2. Inspect control connections: Remove the top cover and control panel. Check all connectors on the main control board for secure fit.
- 3. Recent board replacement: If the PCB was recently changed, it may require configuration with Casarte service tools. Contact authorized service.
- 4. Board replacement: Persistent E90 usually indicates a faulty main PCB that must be replaced with the correct model-specific part.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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