Takes too long to dry

80% of 'dryer not heating' complaints are actually vent restriction — always check vent FIRST before diagnosing components Samsung's Delta-T algorithm masks gradual vent blockage by extending cycle time — customer notices 'drying takes longer' months before C8 code appears Fabric softener sheet residue on lint screen is invisible but blocks significant airflow — run water over screen to test, pools = blocked Moisture sensor bar contamination causes Sensor Dry to run full timer instead of sensing — clothes come out over-dried or still damp depending on load

Samsung Sensor Dry compares moisture sensor conductivity against thermistor-derived dryness curve Contaminated sensor bars read 'dry' prematurely (shorter cycles, damp clothes) or 'wet' continuously (runs full timer) Dryer sheet residue is the #1 cause — liquid fabric softener does not coat the bars as badly After cleaning sensor bars, run a test load with damp towels on Sensor Dry Normal — cycle should complete in 40-55 minutes