Is your LG dishwasher showing the HE error code and stopping mid-cycle? This frustrating message means there’s an issue with the heating system inside your appliance.
But don’t worry—you don’t have to call a repair technician just yet. Understanding what causes the HE error and how to troubleshoot it can save you time and money. You’ll learn simple steps to diagnose the problem, from checking the heating element and temperature sensor to inspecting wiring and control boards.
Keep reading, and you’ll be back to running spotless dishes in no time.
He Code Meaning
The LG dishwasher HE error code signals a heating problem inside the appliance. This code appears when the dishwasher cannot heat the water to the correct temperature. Proper water heating is essential for cleaning and drying dishes effectively. Understanding the HE code meaning helps diagnose the issue quickly.
Heating Issue Indicator
The HE code means the dishwasher’s heating element is not working properly. The heating element warms the water during wash and dry cycles. If it fails, the dishwasher cannot clean or dry dishes well. The error also appears if the temperature sensor or thermal fuse malfunctions. These parts control and monitor the heating process.
Common Causes
Several issues can trigger the HE error code. A broken heating element is the most frequent cause. It may have a broken wire or be burnt out. A faulty thermistor, which measures water temperature, can also cause the error. If the thermistor gives wrong readings, the dishwasher stops heating.
Another common cause is a blown thermal fuse or thermostat. These parts protect the dishwasher from overheating. Damaged wiring or loose connections between components can interrupt the heating circuit. In rare cases, the main control board may fail and send wrong signals about heating.
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Safety Precautions
Safety is the top priority when dealing with the LG dishwasher HE error code. This error involves the heating system, which means electrical parts are involved. Taking safety precautions helps avoid shocks and other accidents. Follow all steps carefully before starting any repairs.
Power Off Before Repairs
Always unplug the dishwasher before opening it. Switch off the circuit breaker if needed. This stops electricity from flowing to the appliance. Never work on the dishwasher while it is powered on. Even a small current can cause injury. Confirm power is off by testing with a voltage tester. Only then proceed with repairs or inspections.
Handling Electrical Components
Handle wires and parts with dry hands. Water and electricity do not mix. Use insulated tools to avoid shocks. Avoid touching metal parts directly. Check wires for damage or corrosion before touching. Replace any damaged wires immediately. Keep components organized to avoid confusion. Follow manufacturer instructions for testing parts like the heating element or thermistor. Proper care ensures your safety and fixes the error correctly.
Testing Heating Element
Testing the heating element is a key step to fix the LG dishwasher HE error code. This error shows a problem with heating water inside the dishwasher. The heating element warms the water for effective cleaning and drying. Checking it helps find if the element works well or needs replacement.
Locating The Element
The heating element is often under the dishwasher, near the sump area. To find it, open the dishwasher door and remove the lower rack. Look at the bottom inside; the element is usually a curved metal rod or coil. It is attached with screws or clips. Before touching, unplug the dishwasher or turn off power at the circuit breaker. This step keeps you safe.
Using A Multimeter For Continuity
A multimeter checks if electricity flows through the heating element. Set the multimeter to the continuity or ohm setting. Disconnect the heating element’s wires. Touch the multimeter probes to the element’s terminals. A good element shows a low resistance value, usually between 10 to 50 ohms. If the meter shows no reading or infinite resistance, the element is broken and must be replaced.
Replacing A Faulty Element
To replace the heating element, first remove the screws or clips holding it. Carefully pull the element out from its place. Disconnect the wires attached to it. Connect the wires to the new element, and fix it back using screws or clips. Make sure the element is secure and all wires are tight. Restore power and run a test cycle to confirm the fix. A new heating element solves the HE error and restores dishwasher function.
Checking The Thermistor
Checking the thermistor is a crucial step when diagnosing the LG dishwasher HE error code. This sensor measures the water temperature during the wash cycle. If it fails, the dishwasher may not heat the water properly, triggering the HE error. Testing the thermistor helps identify if it is the cause of the problem. Below are key points about its role, testing methods, and replacement guidelines.
Role In Temperature Monitoring
The thermistor monitors water temperature inside the dishwasher. It sends temperature readings to the control board. The control board uses this data to regulate the heating element. If the thermistor gives wrong readings, the dishwasher may not heat water correctly. This can cause the HE error code to appear. The thermistor ensures the water reaches the right temperature for effective cleaning.
Continuity Test
Use a multimeter to test the thermistor’s continuity. Unplug the dishwasher before starting the test. Locate the thermistor, usually near the heating element or sump area. Set the multimeter to the resistance or ohms setting. Place the probes on the thermistor terminals. A good thermistor shows a specific resistance value based on temperature. If the reading shows no continuity or infinite resistance, the thermistor is faulty.
When To Replace
Replace the thermistor if the continuity test shows no resistance or a broken circuit. Also replace it if the dishwasher shows the HE error repeatedly after testing other parts. A faulty thermistor cannot accurately measure temperature. This causes heating problems and cleaning issues. Using a new thermistor restores proper temperature monitoring and helps fix the HE error code.
Inspecting Thermal Fuse And Thermostat
Inspecting the thermal fuse and thermostat is essential when addressing the LG dishwasher HE error code. These parts control the heating and drying functions inside the dishwasher. Faulty components can stop the heating process, triggering the HE error. Careful inspection helps identify if these parts need repair or replacement.
Function In Drying Cycle
The thermal fuse protects the dishwasher from overheating during drying. It cuts power if the temperature goes too high. The thermostat controls the temperature by turning the heating element on or off. Both work together to keep the drying cycle safe and efficient.
Testing With Multimeter
Unplug the dishwasher before testing. Set the multimeter to the continuity setting. Remove the thermal fuse and thermostat from the dishwasher. Place the multimeter probes on each end of the parts. A beep or low reading means the part is good. No beep or infinite reading means it is faulty and needs replacement.
Replacement Guidelines
Purchase parts that match your dishwasher model. Turn off the power supply before starting. Remove the old thermal fuse and thermostat carefully. Install the new parts in the same position. Secure all connections tightly to avoid loose wires. Restore power and run a test cycle to check if the error clears.
Wiring And Connection Issues
Wiring and connection issues often cause the LG dishwasher HE error code. Faulty or damaged wiring can interrupt the heating cycle. Loose connections may prevent the dishwasher from heating water properly. Checking these areas helps solve the problem quickly.
Identifying Damage Or Corrosion
Look closely at all wiring near the heating element and control board. Check for broken insulation or exposed wires. Corrosion on connectors can stop electrical flow. Rust or greenish deposits indicate corrosion. Such damage weakens the heating circuit and triggers the HE error.
Securing Loose Connectors
Loose connectors cause poor contact and electrical failure. Gently wiggle each connector to test its tightness. Re-seat any loose plugs firmly into their sockets. Use a flashlight to see small connectors clearly. Securing connectors restores proper current flow and heating function.
Impact On Heating Circuit
The heating circuit relies on good wiring and solid connections. Any break or poor contact stops current from reaching the heating element. This failure causes the dishwasher to show the HE error code. Fixing wiring issues ensures the heating element heats water consistently and efficiently.
Control Board Problems
The control board plays a vital role in the operation of your LG dishwasher. It acts as the brain, managing power and communication between parts. Problems with the control board often cause the HE error code. Understanding this issue helps in fixing the dishwasher efficiently.
Role In Power Distribution
The control board controls power flow to the heating element and sensors. It sends signals to turn heating on or off during cycles. If it fails, the heating element may not get power. This failure triggers the HE error code, signaling a heating issue.
Signs Of Malfunction
Common signs include the HE error code appearing on the display. The dishwasher may not heat water properly or stop mid-cycle. Other signs are unresponsive buttons and strange noises. These symptoms point to a faulty control board.
Replacement Process
Start by unplugging the dishwasher or turning off the circuit breaker. Remove the control panel to access the control board. Disconnect all wires carefully, noting their positions. Replace the old board with a new one compatible with your model. Reconnect wires and secure the panel. Restore power and test the dishwasher to confirm the fix.
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Resetting And Testing
Resetting and testing your LG dishwasher after encountering the HE error code helps identify if the issue is resolved. This process clears the error and checks the heating system’s functionality. Follow these steps carefully to ensure your dishwasher works properly again.
Power Restoration
Start by unplugging the dishwasher or turning off the circuit breaker. Wait for about five minutes before restoring power. This reset can clear minor electronic glitches causing the HE error. After power is back, the dishwasher’s control board will reboot.
Running Diagnostic Cycles
Next, run a diagnostic cycle to test the dishwasher’s heating element and sensors. Most LG dishwashers have a self-diagnosis mode. Refer to your user manual for activation steps. This cycle checks if the heating system works correctly and if the error reappears.
Confirming Error Resolution
After the diagnostic cycle ends, inspect the display for any error codes. If the HE error is gone, your dishwasher is fixed. Test a regular wash cycle to ensure it heats water properly. If the error returns, further repairs may be needed.
When To Call A Professional
Knowing when to call a professional for the LG dishwasher HE error code can save time and avoid further damage. Some repairs require special tools and experience. Attempting complex fixes alone may void your warranty or cause more issues. A trained technician can diagnose problems accurately and fix them safely.
Complex Electrical Issues
Electrical problems can be tricky and risky. Faulty wiring or damaged circuits need expert attention. Professionals have tools to test electrical parts precisely. They follow safety rules to prevent shocks or fires. If you notice sparks, burning smells, or frequent power trips, call a technician immediately.
Control Board Replacement
The control board controls the dishwasher’s heating and other functions. If tested parts are fine but the error persists, the control board may be bad. Replacing it requires opening the machine and handling delicate electronics. A technician will ensure the new board fits and works properly. Incorrect installation can cause more errors or damage.
Warranty Considerations
Check your dishwasher’s warranty before any repair. Some fixes done by non-professionals can void the warranty. Authorized service centers keep your warranty valid. Professionals also provide official repair records. These are important if other problems arise or if you claim warranty service later.
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Frequently Asked Questions
How To Fix He Error Code On Lg Dishwasher?
To fix the LG dishwasher HE error, first unplug the unit. Test the heating element, thermistor, and thermal fuse for continuity. Check wiring for damage or corrosion. Replace any faulty parts. If all parts work, replace the main control board.
Reset power and run a test cycle.
What Is The He Code On My Lg Washer?
The HE code on your LG washer indicates a heating error. It signals a faulty heating element, thermistor, thermal fuse, wiring, or control board. Check these parts for continuity and damage. Replace any defective components to fix the error and reset the washer.
What Does He Mean On My Dishwasher?
The “HE” error on your dishwasher means a heating problem. It signals a faulty heating element, thermistor, thermal fuse, wiring, or control board. Check and replace these parts to fix the issue and restore proper heating function.
Where Is The Heating Element In A Lg Dishwasher?
The heating element in an LG dishwasher is located beneath the tub, near the sump area. It heats water during cycles.
What Does The Lg Dishwasher He Error Code Mean?
The HE code shows a heating problem inside the dishwasher during a cycle.
Conclusion
The LG dishwasher HE error code signals a heating problem. Check the heating element, thermistor, and thermal fuse first. Inspect all wiring for damage or loose connections. Faulty parts need replacement to fix the error. If these parts work fine, the control board could be the issue.
Always turn off power before repairs for safety. After fixing, reset the dishwasher and test it with an empty cycle. This approach helps keep your dishwasher running smoothly and error-free.