A load that needs repeated drying cycles is worth checking. Start with the load, cycle and lint screen before assuming the heater or moisture sensor has failed.

Check what went into the dryer

Laundry that is unusually wet after washing will take longer to dry. Check whether the washer completed its spin cycle. Separate heavy towels from light clothing and leave room for clothes to tumble, following the dryer manual and fabric labels.

Confirm that the selected cycle uses heat. An air only cycle will not behave like a heated cycle. A very small load may also behave differently on a sensor cycle. Samsung’s drying guide explains load and cycle checks for its dryers.

Check airflow on a vented dryer

Clean the lint screen before the next load and check the accessible outside vent opening for an obstruction. Note whether its flap opens while the dryer runs. The U.S. Fire Administration recommends keeping lint filters and dryer vents clear.

A crushed duct or buildup farther along the exhaust can need cleaning or repair. Do not run a gas dryer with its exhaust disconnected into the room. Ventless dryers have different filter, water tank and heat exchanger maintenance, so use the instructions for that design.

What to report

Describe whether clothes stay cold, become warm but damp, or dry unevenly. Include the cycle, load size, dryer model and any airflow warning. Stop using the dryer if it smells burnt or overheats, and request an assessment.

Send a dryer repair request if normal cleaning and cycle checks do not restore drying.