What does Samsung dryer error code HC mean?

Error code HC means the dryer detected dangerously high temperatures. Unplug it immediately and let it cool. The most common cause is a clogged dryer vent. Also test the thermostats and heating element for faults.

Samsung Dryer Error Code HC — High Temperature (Heating Circuit) Error

Advanced Fix 30–60 minutes Tools: Multimeter, Phillips screwdriver, 1/4-inch nut driver, Vent cleaning brush

What this means

The HC error code indicates the dryer's internal temperature has exceeded safe operating limits. This is typically caused by a restricted vent system, a stuck relay on the control board keeping the heater on, or a failed thermostat not cutting off heat. This is a safety-critical error that should be addressed promptly.

Alternate codes: HC4, hC

Step-by-step fix

4 steps

Allow the dryer to cool down

Unplug the dryer immediately and let it cool for at least 30 minutes before performing any inspection.

Do not run the dryer again until the cause is identified — overheating is a fire hazard.

Clean the entire vent system

Disconnect the exhaust hose and clean it thoroughly. Also clean the lint filter, the lint filter housing cavity (use a vacuum), and the external vent hood. A restricted vent is the number one cause of dryer overheating.

Use a flashlight to check inside the lint filter cavity — lint can accumulate deep inside.

Test the cycling thermostat and high-limit thermostat

The cycling thermostat regulates the heating element on and off during normal operation. The high-limit thermostat is a safety cutoff. Test both for continuity with a multimeter. Replace any that show no continuity.

If the high-limit thermostat is blown, it means the dryer overheated — find and fix the root cause.

Check the heating element for grounding

Test from each heating element terminal to the element housing with a multimeter set to continuity. Any reading means the element is grounded (touching the housing) and running continuously. Replace the element.

A grounded heating element stays on regardless of thermostat control, causing overheating.

When to call a professional

If the vent is clear and all thermostats and the element test normally, the control board relay may be stuck in the on position. A technician should diagnose and replace the control board.

Related error codes

The dryer is not heating or is overheating.

Advanced Fix · 30–60 minutes

The dryer drum temperature has exceeded the maximum safe limit.

Advanced Fix · 30–60 minutes

The temperature sensor is giving incorrect readings.

Advanced Fix · 20–45 minutes

Clg

The dryer has detected restricted exhaust airflow.

Easy Fix · 20–45 minutes

Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.

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