Problems you may notice
• Dryer stops mid-cycle without completing the drying process
• Clothes remain damp after the cycle ends
• Dryer displays F9 error code on the control panel
• Dryer may not start or respond to cycle selection
• Excessive heat generation without proper moisture detection
• Inability to select or complete any drying cycle
Possible Causes
• Moisture sensor covered with lint or detergent residue preventing proper operation
• Broken or damaged moisture sensor element inside the dryer drum
• Loose or disconnected wiring harness connected to the sensor
• Faulty control board unable to communicate with the moisture sensor
• Moisture sensor contacts corroded due to humidity exposure
• Failed sensor component requiring replacement
• Electrical connection issues between sensor and main circuit board
Precautionary measures
• Verify the dryer is properly plugged into a grounded electrical outlet with adequate power supply
• Check that the dryer door closes completely and latches securely
• Remove and thoroughly clean the lint filter, then inspect the filter housing for lint accumulation
• Verify the exhaust vent is not blocked by checking airflow from the exterior vent opening
• Inspect the exterior dryer vent hood to ensure it opens freely and is not clogged with lint
• Check your home's circuit breaker to ensure the dryer circuit has not tripped
• Ensure you are not overloading the dryer drum with excessive clothing
• Confirm the correct drying cycle is selected for your load type
• Unplug the dryer from the wall outlet or turn off the dedicated circuit breaker for 60 seconds, then restore power to reset the appliance
• Run a test cycle to determine if the error clears
• If the F9 error code persists after performing these checks, contact a professional appliance repair technician to diagnose and repair the moisture sensor or control board issues
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