What HE means
| Code | What it means | Common causes | What to check |
|---|---|---|---|
| HE | Heating error, the dryer isn't reaching or maintaining the expected drying temperature | A tripped thermal fuse or thermostat, a failing heating element, restricted airflow reducing how well heat is retained | Check and clean the vent path first, confirm nothing is blocking airflow, then check whether the thermal fuse has tripped before assuming the heating element itself has failed |
Samsung's own support documentation lists a blocked vent, a tripped thermal fuse or thermostat, and a failing heating element as the causes behind HE (Samsung dryer error code support). If your dryer's showing a different code, the full Samsung dryer code table covers the rest. The order below starts with the cause that's both the most common and the easiest to check.
Work through it in order
Check the vent path for lint buildup or a crushed hose
Restricted airflow is the most common and most fixable cause of HE, and it can trip the thermal fuse even when the heating element itself is fine. Pull the lint trap and clear it fully, then check the vent hose at the back of the dryer for lint packed inside or a kink from the machine being pushed too close to the wall. If you can get outside, check the exterior vent cap for debris or a nest blocking it.
Check whether the thermal fuse has tripped
If airflow checks out clear, the thermal fuse is the next thing to rule out. It's a one-time safety component, not something that resets itself, so once it trips from overheating, it stays open until it's replaced. A multimeter continuity check confirms whether it's blown, though this is a step some owners hand to a technician since it means opening the cabinet.
Consider the heating element itself
If the vent is confirmed clear and the fuse is intact, the heating element is the likely remaining failure point. This is typically where DIY troubleshooting stops, since testing and replacing the element means working inside the dryer's cabinet.
Why a blocked vent can look like a heating-element failure
A badly restricted vent traps enough heat inside the drum that the thermal fuse trips as a safety measure, producing the exact same HE code you'd see from an actual heating-element failure. That's the same root cause behind a restricted-airflow code on an LG dryer, even though the two brands label it differently on the display. Checking the vent path first, before assuming the element has failed, saves a lot of owners a technician visit or an unnecessary parts order. It's also why a dryer that ran fine for years and suddenly shows HE is more often a maintenance issue than a mechanical one.
