Samsung Dishwasher Error Code HC

The HC code on a Samsung dishwasher indicates a high temperature heating error. The dishwasher detected that water temperature did not increase by more than 3°C within 10 minutes of heating, or that the target temperature was not reached within the allowed cycle time plus an additional 60 minutes. The most common causes are a cold water inlet connection, a faulty thermistor, or a failed heating element.

It is not advisable to continue running wash cycles while the HC code is active. Without adequate water temperature, dishes will not be properly sanitized, and detergent may not dissolve or rinse correctly. The dishwasher will also likely halt mid-cycle, leaving dishes soaking in soapy water. Address the underlying cause before resuming normal use.

A reset may temporarily clear the HC error code from the display, but the code will return if the underlying problem has not been fixed. To reset the dishwasher, power it off at the circuit breaker for a few minutes, then restore power. If the error reappears on the next cycle, the root cause, whether it is the thermistor, heating element, inlet connection, or wiring, must be properly diagnosed and repaired to resolve the fault permanently.

Some causes of the HC error are DIY-accessible. Start by confirming the dishwasher's water inlet is connected to the hot water supply line and that your water heater is functioning correctly. If hot water supply is confirmed, a thermistor replacement is a moderately straightforward repair for someone comfortable working with appliance wiring. Heating element replacement is also achievable with basic tools, though you should disconnect power to the appliance before starting any internal inspection.

Repair costs vary depending on the failed component. A thermistor replacement typically runs in the range of $20 to $60 for the part, while a heating element can cost between $30 and $100 in parts. If professional labor is required, expect to add $80 to $200 depending on your area and the technician's rates. Control board replacement is the most expensive scenario, often ranging from $150 to $350 or more for parts alone.