HC
Samsung Washing Machine
Severity: CriticalWhat Does This Error Mean?
The HC error means your Samsung washer's heater has overheated. The water temperature rose above the safe maximum limit. The machine stops immediately to protect you and prevent a fire hazard. Do not restart the washer until you understand why it overheated.
Affected Models
- WF45R6100AW
- WF50R8500AV
- WF45T6000AW
- WF56H9100AG
- Samsung front-load washers with internal heaters
Common Causes
- Faulty water temperature sensor (thermistor) giving incorrect temperature readings
- Defective heating element staying on longer than it should
- Malfunctioning control board not regulating the heater correctly
- Hot water supply connected to both inlet valves instead of just the hot port
- Scale or limescale buildup on the heating element causing it to overheat
How to Fix It
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Turn off the washer and unplug it from the wall immediately.
Allow the machine to cool down completely — at least 30 minutes. An overheated heater is a fire risk if the machine is restarted too soon.
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Check that the water inlet hoses are connected correctly.
The hot water hose goes to the port labeled HOT. The cold water hose goes to COLD. If both hoses are connected to hot water, the temperature will spike and trigger HC.
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Check your home hot water heater temperature setting.
If your home hot water is set above 60°C (140°F), that alone can trigger the HC error. Lower your water heater thermostat if needed.
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Run a cold water cycle after the machine cools down.
This tests whether the error was a one-time spike or a persistent heater fault. Watch carefully and stop the cycle if anything smells unusual.
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If the HC error returns, the thermistor or heating element needs replacing.
These parts are inside the washer drum area. Replacement requires professional disassembly and should not be attempted without experience.
When to Call a Professional
Heater and thermistor repairs involve electrical components inside the washer. Do not attempt to repair these yourself unless you have appliance repair experience. Call Samsung support or a licensed appliance technician. Expect repair costs of $150–$350 depending on which component failed.
Frequently Asked Questions
Is the HC error dangerous?
Yes — overheating is a serious safety issue. In rare cases an unattended overheating appliance can be a fire hazard. Always unplug the machine and let it cool before doing anything else. Do not restart it until the cause has been identified and fixed.
Can hard water cause the HC error?
Yes, over time. Limescale from hard water builds up on the heating element. This coating acts like insulation, trapping heat and causing the element to overheat. Descaling the washer every 6–12 months can help prevent this.
What is a thermistor in a washing machine?
A thermistor is a temperature sensor. It constantly monitors the water temperature during a cycle. If it reads a temperature that's too high, it signals the control board to stop the heater. A faulty thermistor can give false high readings and trigger the HC error even when the water isn't actually overheating.