Washer shows E91 and the display may be blank or unresponsive.

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.

Possible Causes

Faulty display/control panel, Damaged ribbon cable, Loose connector, Main PCB communication failure

Safety: Disconnect power before accessing the control panel.

Inspect ribbon cable: Remove the fascia and check the flat cable for kinks, tears, or corrosion. Replace if damaged.
Reseat connectors: Firmly reconnect the cable at both the UI board and main PCB.
Replace UI board: If connections are good but E91 remains, replace the user interface board.

If a new UI board does not resolve E91, the main PCB is likely at fault.

Hard 4/5

User Interface Board

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