Samsung Dishwasher HC Error Code

Encountering the “HC” error code on your Samsung dishwasher can be frustrating. This error indicates a “Heater Circuit” issue, pointing to potential problems with the heating element or its associated thermistor. This guide will walk you through the troubleshooting process, helping you identify and resolve the issue.

Understanding the Samsung Dishwasher HC Error Code

The HC error code signals that your dishwasher’s control board has detected a fault in the heating circuit. This circuit is crucial for heating the water during the wash and rinse cycles, ensuring effective cleaning and sanitization. The most common culprits are a faulty heater or thermistor.

Related Parts:

• Heater: The heating element is responsible for raising the water temperature.
• Thermistor: This temperature sensor monitors the water temperature and relays information to the control board.

Possible Causes:

• Faulty Heater: A burned-out or damaged heating element.
• Faulty Thermistor: A malfunctioning temperature sensor.
• Wiring Issues: Loose or corroded connections.
• Faulty Main PBA (Printed Board Assembly)

Safety First!

• Before troubleshooting, disconnect your dishwasher from the power supply by unplugging it or turning off the circuit breaker.
• Exercise caution when working with electrical components.

Samsung Dishwasher HC Error Code: Heater Troubleshooting Guide

Step 1: Thermistor Check

The thermistor is responsible for accurately measuring the water temperature.

1. Visual Inspection:
   • Inspect the thermistor connector for any loose or corroded connections.
   • Ensure the thermistor is securely mounted.
2. Voltage Measurement:
   • Using a multimeter, measure the voltage across the thermistor connector while the dishwasher is running a cycle where heating is active.
   • The normal voltage range should be between 0.05 and 4.95 VDC.
3. Resistance Measurement:
   • Disconnect the thermistor connector before measuring resistance.
   • Use a multimeter to measure the resistance across the thermistor terminals.
   • Compare your readings to the temperature-resistance table below.
   • If the resistance is outside the expected range for the current water temperature, the thermistor is likely faulty and needs replacement.

Thermistor Temperature-Resistance Table:

Step 2: Heater Check

If the thermistor is functioning correctly, the heater is the next suspect.

1. Visual Inspection:
   • Inspect the heater connectors for any loose or damaged connections.
   • Inspect the heater relay on the main PBA for damage.
2. Resistance Measurement:
   • Use a multimeter to measure the resistance across the heater terminals.
   • Also measure the resistance between the red wire of the heater relay and the black and yellow wires of the power relay, respectively.
   • A normal resistance reading is approximately 12.14 to 14.16 Ω.
   • If the resistance is significantly different, the heater is likely faulty.
3. Voltage Measurement (While Operating):
   • Carefully measure the voltage between the red wire of the heater relay on the base and the white wire of the CN101 connector while the dishwasher is in a heating cycle.
   • A normal voltage reading should be approximately 110 to 120 VAC.
   • If there is no voltage, the issue may be with the control board or wiring.
4. Relay Check:
   • If you are comfortable working with circuit boards, inspect the heater relay on the main pba for burn marks or damage. If damaged, replace the main pba.

Repair or Replacement:

• If you identify a faulty thermistor or heater, replace it with a genuine Samsung replacement part.
• If you are uncomfortable performing these repairs, contact a Samsung appliance technician.

Conclusion:

By following these steps, you can effectively diagnose and address the Samsung dishwasher HC error code. Remember to prioritize safety and consult a professional if needed.