LG Dishwasher Code HE: Causes and Solution - Error Lens (2023)

Have you just noticed that your dishes are wet and cold or very hot in your LG dishwasher? While you might be surprised to find your dishes hot or undercooked in the dishwasher, you're not alone; and you are actually experiencing LG Dishwasher HE code which means heater error.

So, if you encounter the HE error code on your LG dishwasher, check to see if there is a heating issue. But hold your horse; Don't rush to the maintenance team just yet, you can solve this problem easily. In this complete guide, you'll learn what the HE code means, what triggers it, how to fix it with DIY tricks, and whether it's worth hiring a technician to help you.

LG Dishwasher Code HE: Causes and Solution - Error Lens (1)

LG HE Dishwasher Code: How Does It Happen?

The LG HE dishwasher code appears when the washing machine overheats or is unable to generate enough heat to function properly. The HE code is displayed on the machine when the water supplied to the dishwasher is heated above 1490When the appliance does not get hot enough to wash the dishes. There can be several factors responsible for this issue but it can be fixed quite easily.

But how does the HE problem arise? After explaining that the heating error occurs when the device fails to heat properly or exceeds its 149 limit0P, the problem is actually caused by a failure in the heating circuit. A heater circuit malfunction can affect the thermistor and control relay, as well as other washer components, and trigger the HE error code message.

It is worth noting that the HE issue has not been reported on older models of LG dishwashers, only on modern models.

What causes the LG HE dishwasher code?

Several factors can be responsible for your dishwasher not heating properly, some of which are discussed in this section.

1. Defective heating circuit

This has already been mentioned, but for emphasis: a faulty heating circuit affects, among other things, the thermistor and the control relay.

When the device overheats and exceeds 1490F, then you should be suspicious of the heating circuit and have it checked by a professional. If the circuit and auxiliary components are not repaired or replaced, the dishes will be damp and cold or very hot and unwashed.

2. Defective pipes

If the plumbing and associated connections in the building are faulty, the water supply will be poor and will cause unnecessary heating problems. If the plumbing is faulty, the hot or cold water supply to the dishwasher may not work properly, which can cause heating issues. It's worth noting that running very cold water through the dishwasher can also trigger the HE code, as the appliance takes a while to heat up the water.

3. Blocked filters, drains and pumps

Blockages in water filters, drain lines, hoses and even air vents can cause unnecessary heating. These clogs can be caused by dirt created by detergent scum and food residue from washed dishes.

Whatever the case, it is important to check filters, drains, pumps and vents for blockages; B. With clogs, the appliance may heat up more quickly and this may trigger the dishwasher code HE.

4. Defective thermistor and pressure switch

Examining the thermistor and pressure switch functionality with a multimeter will tell you if they are working properly. If the thermistor is faulty, the entire heater bracket may need to be replaced as it is beyond repair. This unit provides the dishwasher with adequate heat for its functions.

You will also need to examine the pressure switch if it is responsible for the heater problem. The pressure switch regulates the temperature of the dishwasher and controls the amount of water flowing into the heater. If too little water flows into the heater, the pressure switch may shut off the heater and this may trigger the HE error code. It can also sometimes be helpful to check the pressure switch to ensure it is working properly.

5. Defective wiring harness

Faulty wiring can affect the dishwasher's electrical circuit and cause the HE sign to appear. If the control board wiring is exposed and not sealed, contact and sparking can occur, which can create electrical charges that can damage the entire unit. In a situation where the electrical harness is unstable, the pressure switch will be affected and this will compromise the integrity of the wires when the dishwasher door is opened or closed.

LG HE dishwasher code: how to fix it

LG HE dishwasher code can be fixed without hiring a local handyman. We are going to suggest several tricks that you can try to remove HE notification and get your device working again. Here are some of the tricks you can try:

1. Reboot and restart your computer

If the heating issue is due to a technical error, resetting and restarting the device may resolve the issue. To do this, turn off the dishwasher by holding down the power button.

Turn the breaker off for about 30 seconds before turning it back on. Then turn the machine on and start a new wash cycle to clear the HE error code. However, if that doesn't resolve the issue, try the others listed below in this section.

2. Repair faulty cable connections

If bad wire connections to the control board and heater circuit have been diagnosed as the cause of the HE error, you may want to repair the faulty wire connections.

If you are not good with cables, contact a qualified technician for help. You don't want to cause even more electrical damage by messing with wires you don't know about. An experienced mechanic will repair or replace damaged wiring and wiring harness if necessary.

3. Clean filters, hoses and pumps

As clogged filters, hoses and pumps can lead to heater failure, cleaning the water hoses and draining the pumps would go a long way in solving the problem.

Dirt, deposits and food residue, as well as thick detergent scum, must be removed to allow the appliance to cool down or heat up more quickly. Doing so will effectively remove the HE error code from your washing machine's display screen.

LG HE Fix dishwasher code: do-it-yourself video

When do you call a repairman?

It may not be necessary to call a technician if you're successful with the DIY tricks detailed in this comprehensive guide. But you might consider hiring a technician if you don't have enough technical knowledge to troubleshoot dishwasher heating issues. However, you must understand that you are paying for the technician's service and this can eat into your savings.


LG Dishwasher Code HE stands for heater error and is seen when your appliance doesn't heat up fast enough to wash dishes or overheats beyond the recommended 149.0limit F. The HE error can be corrected by repairing or replacing the heater circuit, examining the wiring and harness, replacing the thermistor and pressure switch, and cleaning clogged drains and hoses.

Resetting and restarting your dishwasher can also cause the HE error code to disappear from the screen. In the rare event that everything fails, you may need to contact LG customer service or hire a qualified technician to help you.

  • LG Dishwasher Code HE: Causes and Solution - Error Lens (2)

    russell conder

    Russell Conder is an expert in appliance and appliance installation, repair and maintenance. He especially likes to play with these products, configure and fix bugs and bugs in them. And on this blog he shares his interesting views with other consumers.

    show all posts


Why is my LG dishwasher flashing he? ›

The 'HE' error code is a result of a temporary heater error.

How do you clear a dishwasher error code? ›

Step 1: Try to clear the error code

If the error code was caused by a glitch, performing a hard reset by disconnecting the power to the dishwasher for five minutes should clear the error code. If the error code returns, the water in the base of the dishwasher will need to be removed.

How do I reset my LG washer error? ›

How to reset the washing machine:
  1. Press POWER to turn the washer off.
  2. Unplug the washer from the power outlet or turn the circuit breaker to the unit off.
  3. With the power disabled, press and hold the START/PAUSE button for 5 seconds.
  4. Plug the washer back in, or turn the circuit breaker back on.
Aug 11, 2022

What is the life expectancy of a LG dishwasher? ›

LG's dishwashers should usually last between 10 and 15 years.

Why is my LG dishwasher flashing and not starting? ›

The heating element heats up the water to operating temperature. If the water doesn't reach the proper temperature after a set amount of time, a light on the control panel might start flashing. To determine if the heating element has burned out, use a multimeter to test it for continuity.

Does a LG dishwasher have a reset button? ›

Unfortunately, LG dishwashers do not come with a dedicated reset button, so you will have to do it the old-fashioned way—i.e., unplug the device and plug it back in.

What is the HS code for LG dishwasher? ›

HS Codes 84229020 : HS Classifcations of Of dish washing machines of household type.

What are the LG dishwasher error codes? ›

LG dishwasher error codes
  • IE. Not filling. Check/ Repair. ...
  • OE. Not draining. Check/ Repair. ...
  • AE or E1. Water leak detected. Check/ Repair. ...
  • FE. Water overflow detected. Check/ Repair. ...
  • tE. Thermistor (temperature sensor) failure. Check/ ...
  • LE. Locked up circulation pump motor. Check/ ...
  • HE. Heater failure. Check/ ...
  • nE. Diverter motor failure. Check/

What are the error codes on an LG washer? ›

Select LG error code on your display:
  • FE – Water Overflow Error.
  • OE – Drains Slowly.
  • IE – Inlet Water Supply.
  • UE or UB – Unbalanced Load.
  • CL – Child Safety Lock.
  • LE – Locked Drive Motor.
  • tCL – Tub Clean Cycle.
  • dE – Door is Open.

How do I know if my dishwasher drain hose is clogged? ›

6 Signs Your Dishwasher Problems Are Caused By a Clog
  1. You Hear Gurgling Sounds. ...
  2. Your Dishwasher Is Backing Up Water in Your Sink. ...
  3. You Notice Slow Draining In Your Dishwasher. ...
  4. You See Water Backup In the Dishwasher After the Cycle. ...
  5. Your Dishes Are Not Cleaned. ...
  6. Your Dishwasher Smells.
Aug 10, 2022

How do I force my dishwasher to drain water? ›

Mix together about one cup each of baking soda and vinegar and pour the mixture into the standing water at the bottom of the dishwasher. Leave for about 20 minutes. If the water is draining or starting to drain at that time, rinse with hot water and then run the dishwasher's rinse cycle.

How do I force my LG washer to drain? ›

For LG front load washers, turn the unit on and without touching the selector dial move to the spin speed selection button. Next, press the button until you see your desired spin speed highlighted. Then press the Start button. The unit will drain any excess water before it spins.

How do I put my LG washer in diagnostic mode? ›

Press the POWER to turn on the washer. Place the mouthpiece of your phone between the Smart Diagnosis logo and the POWER button. After pressing the Start Diagnosis button, press and hold the TEMP button until a countdown displays on the washer.

How do you force a washing machine to reset? ›

If you see no change, you can try a Master Reset. This will reset all of the onboard componentry and is often successfully used by appliance technicians. Open and close the door of the washing machine 6 times within 12 seconds. Then, run the rinse/spin cycle without clothing to see if your problems are resolved.

How do you bypass a washing machine sensing? ›

Here is a simple way to do this:
  1. Let us say you have 2 lbs of clothes.
  2. Add the 2 lbs of clothes in the washtub.
  3. Before commencing the wash cycle, pour 4 lbs of water over the clothes and let water to soak into the fabric.
  4. Start the wash cycle. ...
  5. You have successfully bypassed water level sensor.
Nov 5, 2020

How does smart diagnosis for LG work? ›

The signal from your smart range is transmitted over your home wireless network and our servers analyze the signal to diagnose any issues and then relay that information to your smart phone app. To use the Wi-Fi diagnosis, open up the LG smart range app and then open the smart diagnosis feature.

What is the most common problem with a dishwasher? ›

Dishwasher Not Draining

A dishwasher that doesn't drain properly is one of the most common dishwasher issues faced by homeowners. However, as frustrating as it may be, it's rarely something you can't solve yourself.

Which brand of dishwasher lasts the longest? ›

Miele dishwashers are the longest-lasting dishwashers that you can buy. The company claims that its products will last for 20 years of average use.

Is LG a reliable dishwasher brand? ›

No wonder LG came in second place in Consumer Reports' list of the most dependable appliances in 2021. With all that, our experts at Spencer's Appliance say “yes!” LG dishwashers are definitely worth it.

Why is my dishwasher blinking when I press start? ›

The Start/Resume light flashing, (Select models), indicates the cycle or start-up was interrupted. This can happen if the door is opened during the cycle or power has been interrupted. Push the door firmly closed within 3 seconds of pressing Start/Resume.

How do I reset the cycle on my LG dishwasher? ›

Empty the unit of any dishware, then press and hold Heavy for 3 seconds to activate the Machine Clean. The Machine Clean icon will reset automatically after the Machine Clean cycle is run.

Is there a fuse in my LG dishwasher? ›

The thermal fuse shuts off power to the dishwasher if it overheats. If the thermal fuse blows, it will prevent the dishwasher from starting. To determine if the thermal fuse is defective, use a multimeter to test the fuse for continuity. If the thermal fuse does not have continuity, replace it.

Where is the reset button on an LG dishwasher? ›

Unfortunately, LG dishwashers do not come with a dedicated reset button, so you will have to do it the old-fashioned way—i.e., unplug the device and plug it back in.


Top Articles
Latest Posts
Article information

Author: Ms. Lucile Johns

Last Updated: 08/31/2023

Views: 5845

Rating: 4 / 5 (61 voted)

Reviews: 84% of readers found this page helpful

Author information

Name: Ms. Lucile Johns

Birthday: 1999-11-16

Address: Suite 237 56046 Walsh Coves, West Enid, VT 46557

Phone: +59115435987187

Job: Education Supervisor

Hobby: Genealogy, Stone skipping, Skydiving, Nordic skating, Couponing, Coloring, Gardening

Introduction: My name is Ms. Lucile Johns, I am a successful, friendly, friendly, homely, adventurous, handsome, delightful person who loves writing and wants to share my knowledge and understanding with you.