Samsung Dryer Not Heating: Causes and How to Fix It
Updated · from manufacturer service documentation
If a Samsung dryer runs (tumbles, motor works) but the clothes come out cold, the heating element or its safety controls aren't completing the circuit. Samsung's own service documentation ties this to a handful of specific parts — the heating element itself, a tripped safety thermostat, or a restricted vent — most of which point to an error code (HE or hE, "Heater Error") if your model displays one.
What Causes a Samsung Dryer to Stop Heating
| Cause | Likelihood | DIY difficulty | Related part |
|---|---|---|---|
| Restricted/clogged vent system (also triggers HE code) | Most common | Easy — clean lint screen and vent | Vent duct |
| Open heating element | Common | Moderate — multimeter | Heating element |
| Hi-Limit thermostat trips easily or is open | Less common | Moderate — multimeter | Hi-Limit thermostat |
| Regulating thermostat trips easily or is open | Less common | Moderate — multimeter | Regulating thermostat |
| Membrane switch open | Less common | Moderate — multimeter | Membrane switch |
| Thermistor reading abnormal (very high or very low resistance) | Less common | Moderate — multimeter | Thermistor |
| Blown thermal fuse from prior overheating (vent-related) | Occasional | Moderate — replace fuse | Thermal fuse |
How to Fix a Samsung Dryer That Won't Heat, Step by Step
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Check the lint screen and vent system first
A restricted vent is the most common trigger behind Samsung's own "Heater Error" (HE/hE) code — clean the lint screen and check the full vent duct run for clogs or crushed sections before checking any parts.
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Confirm the dryer is actually running normally otherwise
These heating causes assume the motor runs and the drum tumbles — if the dryer won't start or run at all, that's a different fault (belt, motor, door switch), not a heating issue.
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Check the thermistor
Per the service documentation, "the Thermistor resistance is very low" or "very high" are both listed as heater-fault triggers — a technician can confirm with a multimeter whether the thermistor reads within Samsung's spec for your model.
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Check the heating element and thermostats
Look for an open (broken) heating element, and check whether the Hi-Limit thermostat or the regulating thermostat trips easily or reads open — any of these interrupts the heating circuit even with the motor running fine.
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Check the membrane switch
This is another documented point of failure in the same "will not heat" diagnostic — an open membrane switch stops heat the same way a tripped thermostat does.
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If your model displays an error code during this
It's almost certainly HE or hE ("Heater Error" — invalid heating temp while running); Samsung's fast-track sheet ties this specifically back to vent restriction and thermistor resistance, matching the checks above.
Which Models This Applies To
Documented across the Samsung DV42H5000–DV45H6300 series service manual and the DV5451/DV5471 fast-track troubleshooting sheet. Both sources independently name the same short list of causes (vent restriction, thermistor, thermostats, heating element), which is why this symptom page and the "will not heat" causes overlap so closely across different Samsung dryer generations.
Frequently Asked Questions
Is a Samsung dryer not heating always a vent problem?
It's the most common single cause, but not the only one — a failed thermistor, thermostat, heating element, or membrane switch can all produce the same symptom even with a completely clear vent.
Why does my dryer tumble normally but produce no heat?
The motor and heating circuits are separate — a failure in the heating element, thermostats, thermistor, or vent airflow stops heat without affecting the motor or drum at all.
Does a clogged vent actually stop heat, or just slow drying?
Per Samsung's documentation, vent restriction is directly tied to the Heater Error (HE) code — severe restriction can trip the safety thermostats that cut heat entirely, not just slow the cycle down.
Should I replace the heating element myself if my dryer won't heat?
Only after checking the cheaper, easier causes first (lint screen, full vent run) — the heating element, thermostats, and thermistor all require a multimeter and some disassembly, and any of them could be the real cause instead.
Based on the Samsung service documentation for the DV42H5000-DV45H6300 dryer series and the DV5451/DV5471 fast-track troubleshooting sheet. Last updated: .