Samsung dryer — Error Code HC
The unit is overheating, usually caused by blocked ventilation or a malfunctioning heating component.
What it means
The HC error code on a Samsung dryer alerts you to a High Heat or Heater Control problem. Your dryer's control board activates this alert when the NTC thermistor detects that the internal drum temperatures have climbed past the safe limit—typically between 145°F and 160°F, depending on your selected cycle. To protect your laundry and prevent fire hazards, the unit will shut down automatically. While HC is the standard display, some units might show HE, HC4, or 1 HC for this same issue. The problem usually stems from two main areas: either the heat is trapped because air cannot move through the system, or an electrical malfunction is keeping the heating element or gas burner active when it should be off. A grounded heating element or a stuck heater relay on the main control board can bypass the cycling thermostat, leading to constant, uncontrolled heat.
Likely Causes
- 1 Restricted Exhaust VentingIf your lint trap is full or the outside vent is blocked, air cannot circulate. This traps heat inside the drum, causing temperatures to rise rapidly and triggering the HC code.
- 2 Grounded Heating Element (Electric Models)Should the heating element coil snap and touch the metal frame, it creates a short to ground. This keeps the element powered on continuously, ignoring the control board's signals.
- 3 Faulty NTC ThermistorThe NTC thermistor tracks drum heat and communicates with the control board. If this part fails, it may provide inaccurate data, causing the system to think it is overheating or preventing it from managing heat correctly.
- 4 Stuck Relay on Main Control BoardElectrical arcing can cause the heater relay on the main PCB to fuse in the closed position. This sends a constant flow of power to the heating circuit, resulting in runaway heat.
How to clear / reset
To attempt a reset of the HC error code, disconnect the dryer from the power supply for 5 minutes. Before turning it back on, clear the lint trap and inspect the external vent for any obstructions. Once the power is back on, run a 'Time Dry' cycle on low heat with an empty drum. If the code stays away, you likely had a temporary airflow blockage. However, if the HC code reappears quickly, a physical part has failed, such as a damaged thermistor or a grounded element, and will require professional repair.
Common replacement parts
When to call a pro
If clearing the exhaust vent doesn't stop the HC error, you need a technician. Pinpointing an overheating issue involves taking apart the dryer and using a multimeter to check the thermistor resistance, testing the heating element for a ground fault, and verifying the relay voltage on the control board. Handling 240V lines or gas components poses serious safety risks. A-Fix Service provides a $90 diagnostic fee (which is waived if you proceed with a repair) and includes a 1-year parts and labor warranty on all our work across Washington and Oregon.
FAQs
How much does it cost to fix a Samsung dryer HC code?
Vent cleaning is a simple, no-cost fix. If parts are needed, a thermistor replacement usually costs $120-$180, while fixing a grounded heating element or a main control board typically runs between $200 and $400+ including parts and labor.
Can I DIY this repair?
Cleaning your vents is a great DIY project. However, electrical repairs require experience with a multimeter, the ability to disassemble the dryer bulkhead, and safety knowledge regarding 240V wiring. If you aren't comfortable with these, it is best to call a pro.
Will the HC code clear itself?
No, this is a safety-critical fault. It requires a manual power reset to clear, and if the underlying heat problem is still present, the code will trigger again immediately.
Is it safe to keep using the dryer if it occasionally shows HC?
No. Ignoring an overheating warning is a significant fire hazard. You should stop using the appliance immediately until the airflow or electrical issue is resolved.
How long does it take a tech to fix this?
Once the problem is identified, replacing components like the thermistor, thermostat, or heating element usually takes between 45 and 90 minutes. A control board swap is generally finished in about 30 minutes.
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