Moisture sensor fault
The sensor bars inside the drum that read how damp the load is stopped answering. The dryer finishes the cycle it is on but cannot tell when the clothes are dry, so a sensor cycle over-dries them.
- The two metal bars on the lint-screen housing inside the drum are clean — dryer-sheet film coats them; wipe them with rubbing alcohol on a cloth.
- Nothing is wedged over the bars — a sock, a sheet corner.
- Cut the power for one minute and run a sensor cycle with a normal damp load.
Clean bars clear a film fault. An E4 that returns with clean bars is the moisture sensor or its wiring — a part behind the front panel. The dryer still runs Time Dry cycles safely until it is seen.
E4 after a reset with clean sensor bars is a service call. Use Time Dry meanwhile; on a machine under warranty it is a warranty call.
