Washer displays E90; machine may not start or respond to button presses.

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

Loose harness between user interface board and main PCB, Oxidized connectors, Faulty display PCB, Defective main control PCB

Safety first: Unplug the washer before removing the control panel.

Reseat connectors: Remove the top cover and control panel. Disconnect and reconnect the ribbon cable or harness between the display board and main PCB.
Inspect for corrosion: Look for moisture damage or corrosion on connectors. Clean gently with contact cleaner if needed.

If E90 remains, either the display board or main PCB is faulty. Component-level diagnosis should be done by a Dawlance technician.

Professional Required 5/5

User Interface PCB

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