Heating Error
What it means
This code appears on LG dishwashers with a digital display and means the dishwasher could not heat the water to the required temperature within the set time. The cause is usually the heater or its wiring, too little water reaching it, or the temperature sensor (thermistor). The cycle may stop, or it ends with dishes not clean or still wet; the same code can mean something else on other brands.
Models covered: LG dishwashers with a digital display; the code shows on the display.
Symptoms4
- HE shows during the wash or before the final rinse.
- Dishes come out cold or with a greasy film.
- Poor drying, with wet dishes.
- The cycle runs longer than usual.
Possible causes5
- Failed heater or an open heater element.
- Loose or corroded heater connectors or wiring.
- Too little water reaching the heater because of a clogged filter or weak water supply.
- A temperature sensor fault giving a wrong reading.
- A fault in the heater relay on the main board.
How to diagnose5
- Unplug the dishwasher for a few minutes, clean the filter in the bottom, then restart.
- Make sure the dishwasher is plugged straight into a sound socket, not an extension lead, because the heater draws high current.
- Make sure the water tap is fully open and water enters normally.
- If the code repeats, a technician unplugs the dishwasher before opening it and measures the heater and temperature sensor against the manufacturer specification.
- The technician checks the heater connectors and wiring, then the main board output to the heater if those parts test good.
How to fix6
- Clean the filter and make sure water enters normally.
- Repair corroded heater connectors or wiring.
- Replace the heater if it is proven faulty.
- Replace the temperature sensor if its reading is out of specification.
- Replace the main board only if it is proven not to power the heater.
- Run a hot cycle and confirm the dishes come out warm and clean without the code returning.
Repair cost
In Saudi riyals; the highlighted part is the expected range for this fault.
In the Saudi market: SAR 150–1,500 (≈ USD 40–400)
Our prices come from the Saudi market, converted at a fixed rate (SAR 3.75 per USD). Prices in your country may differ a lot, so we show the cost level.
The cost is low for a filter or connector, fairly high for a new heater, and highest if the main board is at fault.
Prices are rough estimates including the part and the technician’s fee, and vary with brand, model and part source.
Prices last updated: September 2026
Frequently asked questions
Can I use the dishwasher until it is repaired?
With care, but cleaning and drying will be weaker and the code may stop the cycle. If you smell burning or the breaker trips, unplug it at once.
What is the difference between HE and TE?
HE means the water did not heat as expected, while TE means the temperature sensor reading itself is impossible. They can overlap, so the technician checks the heater and sensor together.
Was this explanation helpful?
Tap the stars to rate; you can change it later.
What was wrong? (optional)
We never store your IP address, and your comment is not published. Details: Privacy policy · Terms and conditions
Report a mistake
Spotted something inaccurate? Tell us and we will review and correct it.
Report received — thank you
This is your private tracking link. It shows the status and our reply as soon as it is posted.
The link is saved in this browser only.
