Dryer will not start; E90 or related communication error appears; display may be blank or frozen.

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 or damaged communication cable, Faulty user interface PCB, Faulty main control board

Safety first: Disconnect mains power.

1. Reseat connectors: Remove the top cover and control panel. Locate the communication ribbon or harness between the UI and main PCB. Disconnect and reconnect both ends firmly.
2. Inspect for damage: Look for kinks, cuts, or burn marks on the cable and boards.
3. Power reset: After reassembly, leave the dryer unplugged for 5 minutes, then reconnect and test.
4. When to call a technician: Persistent E90 usually indicates a failed UI or main board that must be replaced.

Hard 4/5

Communication Harness

Check Price on Amazon

We may earn a commission from links on this page.