LG Dishwasher HE Error Code – Heating Error Fix Guide
LG dishwasher HE error code? Learn what it means, causes, and step-by-step fixes to restore proper heating and wash performance.
ERROR CODES
4/18/20262 min read
If your LG dishwasher is showing the HE error code, it means the appliance is having trouble heating water. Since hot water is essential for proper cleaning and drying, this issue can affect your dishwasher’s performance significantly.
The good news is that you can often diagnose and fix this problem yourself.
What Does HE Error Code Mean?
The HE error code stands for Heating Error.
It appears when:
Water is not heating to the required temperature
The heating system fails during the wash cycle
The dishwasher detects abnormal temperature readings
Why Heating Is Important in a Dishwasher
Hot water is critical because it:
Breaks down grease and food particles
Kills bacteria
Helps detergent dissolve properly
Improves drying performance
Without proper heating, dishes may come out dirty or wet.
Common Causes of LG Dishwasher HE Error
1. Faulty Heating Element
The heating element may be damaged or worn out.
2. Thermistor (Temperature Sensor) Failure
If the sensor gives incorrect readings, the system may stop heating.
3. Wiring or Connection Issues
Loose or damaged wires can interrupt the heating circuit.
4. Control Board Malfunction
The main control board may fail to send signals to the heater.
5. Low Water Temperature Supply
If incoming water is too cold, the dishwasher may struggle to heat it.
Step-by-Step Fix for HE Error Code
Step 1: Power Reset
Turn off the dishwasher
Unplug it for 10–15 minutes
Restart the machine
👉 This can clear temporary glitches.
Step 2: Check Water Supply Temperature
Ensure your home water heater is working
Ideal temperature: 50–60°C (122–140°F)
Step 3: Inspect Heating Element
Look for visible damage or burn marks
If faulty, it needs replacement
Step 4: Check Wiring Connections
Inspect internal wiring (if comfortable doing so)
Look for loose or damaged connections
Step 5: Test the Thermistor
A faulty sensor may need replacement
Usually requires a technician
Step 6: Restart and Run a Test Cycle
Run a short wash cycle
Check if the error reappears
How to Prevent HE Error
Run hot water in the sink before starting the dishwasher
Maintain your home water heater
Avoid overloading the dishwasher
Clean filters regularly to ensure proper circulation
Quick Summary
HE = Heating Error
Caused by heater, sensor, or wiring issues
Start with a reset and temperature check
Persistent issues may require part replacement
Read More:
How to reset a dishwasher float switch
Dishwasher flashing lights? Causes, Meaning, and Fixes