i90
Electrolux
Communication Error Between User Interface and Main Control
Dishwasher displays i90 and will not run a cycle.
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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
Loose or damaged wiring harness between UI and main board, Faulty user interface board, Faulty main control board, Moisture intrusion into control area
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before opening the door panel or control housing.
- Inspect door control area: Remove the inner door panel to access the user interface and wiring. Check for moisture, condensation, or detergent residue around the control.
- Check harness connections: Reseat all connectors between the UI board and the main control board. Look for pin damage or corrosion.
- Dry components: If moisture is present, gently dry the area with a soft cloth and allow several hours of air drying before reassembly.
- Test operation: Restore power and test. If i90 returns, one of the boards may be defective.
- Board replacement: Replace the user interface board first if buttons or display are also erratic. If that does not resolve the issue, the main control board may need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Electrolux User Interface Board
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