Dryer stops with clothes still damp when using automatic (sensor) cycles, but works on timed dry

Safety first: Unplug the dryer before accessing internal wiring. Cleaning the sensor bars can be done with power off and door open.

Step-by-step checks:

• Clean sensor bars: Thoroughly clean the metal sensor bars inside the drum with rubbing alcohol and a non-metallic pad to remove residue.
• Load size: Use medium-sized loads so clothes make good contact with the sensor bars. Very small loads may not touch the sensors enough.
• Inspect wiring: Check the sensor harness behind the drum for loose or broken wires.
• Control board: If cleaning and wiring checks do not help, the control's moisture sensing circuit may be faulty.

When to call a technician: If automatic cycles remain inaccurate, professional diagnosis of the control system is recommended.