How do I troubleshoot my Samsung dryer depends on symptom but general steps apply. If dryer not starting, check power, electric dryer needs 240 volts two breakers, one may trip, check door fully closed, child lock disabled, and press Start firmly. If dryer not heating error HE or clothes damp, check lint filter clean, vent duct not clogged or kinked, clean vent yearly, check heating element continuity with multimeter, check thermal fuse blown due to overheating, replace if needed $20 part. If dryer making loud squeaking or thumping noise, check drum rollers, idler pulley, and belt for wear, replace if worn. If dryer not spinning drum, check belt broken. If dryer showing error codes like tS thermistor, dF door, 9C1 power, note code and search manual. Run diagnostic mode by holding Mixed Load Bell and Wrinkle Prevent for 3 seconds to see codes. Use SmartThings app for self diagnostic. Clean moisture sensors inside drum near lint filter with rubbing alcohol to remove softener residue. If dryer overheating HC error, clean vent and check thermostat. If control board failure, may need professional repair. Always unplug before inspecting internal parts.
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