Samsung Dishwasher Error Code HE — How to Fix (Water Heater Issue)

Things to Keep in Mind

The Samsung HE error is one of the most common dishwasher error codes. In most cases, it’s caused by either a failed heating element or a faulty thermistor. The good news is both parts are relatively inexpensive ($20-40) and can be replaced by a handy homeowner.

Related issue? If your Samsung dishwasher is showing a different error code, see our guide on Samsung Dishwasher Error bE.

If your Samsung dishwasher is still under warranty (typically 1 year parts and labor), contact Samsung support at 1-800-726-7864 before attempting any repairs, as DIY work may void your warranty.

Preventing Future Dishwasher Errors

Regular maintenance can prevent many common error codes, including HE:

• Avoid overloading — dishes blocking the spray arms are the #1 cause of poor cleaning performance.
• Use the right amount of detergent. More isn’t better — excess detergent causes film and residue.
• Check the spray arm nozzles periodically for clogs. A toothpick works well to clear them.

Samsung Support & Warranty

Samsung offers a standard 1-year parts and labor warranty on most appliances. Extended warranties may be available through Samsung Care+. If your dishwasher is still within the warranty period, contact Samsung support at 1-800-726-7864 before attempting repairs yourself — unauthorized repairs may void your coverage. You can also visit samsung.com/us/support/ for model-specific troubleshooting resources.

Repair Cost Estimate

• DIY repair: $15-$75 for parts (if needed), plus your time
• Professional repair: $100-$250 including parts and labor
• Replacement: Check if repair cost exceeds 50% of a new dishwasher price — if so, replacement may be more economical

Related Samsung Error Codes

If you’re troubleshooting your Samsung dishwasher, these related guides may help:

• Samsung Dishwasher Error bE
• Samsung Dishwasher Error 4E
• Samsung Dishwasher Error PE

Other Samsung appliance guides:

• Samsung Dryer Error dE
• [Samsung Washing Machine Error tE](/samsung/washing machine/error-te/)

What Does Samsung Dishwasher Error Code HE Mean?

When a Samsung dishwasher shows the “HE” error, it’s telling you that the water heater isn’t reaching the temperature it needs to clean your dishes properly. The dishwasher’s heating element or the thermistor (the temperature sensor) has detected that the water is too cool during the wash cycle. As a result, dishes can finish the cycle looking dirty or with food residue still stuck on them.

This error is a safety and performance warning. If the water never heats, the detergent won’t dissolve, and the rinse cycle won’t remove all the grime. Repeatedly running a dishwasher that can’t heat water can also cause extra wear on the motor and other components, shortening the appliance’s life.

Fixing the HE code usually means checking the heating element and thermistor, making sure the water supply is hot enough, and replacing a faulty part if needed.

Common Causes of Error HE

• Low‑temperature water supply – If the hot water line to the dishwasher is cooler than 120°F (49°C), the heater will never reach the needed temperature.
• Faulty heating element – The element may be corroded or broken, preventing it from delivering heat.
• Defective thermistor – A bad sensor can misread the water temperature, causing the control board to think the water is too cool.
• Electrical connection issues – Loose or corroded wiring can reduce the voltage reaching the heating element.
• Control board malfunction – In rare cases, the electronic board that interprets temperature data can be faulty.
• Clogged or dirty heating element – Build‑up of mineral deposits can insulate the element and reduce heat output.

How to Prevent Error HE

1. Keep the water supply hot – Run the kitchen faucet for a couple of minutes before starting the dishwasher. This ensures the hot water line is at the right temperature.
2. Clean the heating element regularly – Remove any mineral deposits or food residue that may accumulate on the element’s surface.
3. Inspect wiring and connections – Periodically check that all terminal connections to the heating element and thermistor are tight and free of corrosion.
4. Use a water softener – Hard water speeds up mineral buildup on the heating element, so a water softener can help keep it clean.
5. Schedule routine maintenance – Have a professional check the heating system every 1–2 years, especially if you live in an area with high mineral content in the water.

Estimated Repair Costs

Prices vary by region and the specific Samsung model. Parts can be found on Samsung’s official parts site or reputable appliance parts retailers.

Frequently Asked Questions

Q1: Can I skip the heating element test and just replace it?
A1: Testing the element with a multimeter confirms whether it’s actually defective. Replacing a good element wastes money and time. If you’re comfortable with basic electrical tools, the test is quick and inexpensive.

Q2: My dishwasher is still showing HE after replacing the heating element. What’s next?
A2: The problem may be the thermistor or the control board. Check the thermistor’s resistance with a multimeter; if it’s out of spec, replace it. If the thermistor is fine, the control board may need inspection or replacement.

Q3: Does the HE error affect the dishwasher’s water usage?
A3: Not directly. The error stops the heating cycle, so the dishwasher may use more water in the rinse stage to compensate for the lack of heat, but overall water usage stays within normal limits.

Q4: Is the HE code related to the dishwasher’s “High‑Temperature” mode?
A4: No. The “HE” code indicates a heating failure, not a user‑selected temperature setting. It’s a fault, not a feature.

Q5: How long does it take to fix the HE code?
A5: For a DIY repair, replacing the heating element or thermistor can take 30–45 minutes. A professional usually completes the job in 1–2 hours, depending on the model and access to parts.