Samsung Dishwasher HE Error: Water heater failure
If your Samsung appliance is showing this error, you’re dealing with a samsung dishwasher he error. Here’s everything you need to know about diagnosing and fixing this issue. Samsung he error code — here is what you need to know. What Does Error Code HE Mean on a Samsung Dishwasher? Error code HE on Samsung […]
No
DIY Fixable
From $200
Typical Repair Cost
60-120 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Yes. The dishwasher is safe to use with an HE error — it simply will not heat water as effectively. Dishes will be cleaned but may not reach sanitization temperatures. There is no safety hazard from the heater failure itself.
Can I reset the code?
Yes. Pre-heat the water supply and power cycle the dishwasher. If HE was caused by cold water supply, it will not recur with hot water input. If the element has failed, HE will return on the next heated cycle.
When to stop immediately?
Stop if you notice: The dishwasher produces a burning smell during the heating phase, There are visible burn marks or discoloration on the tub bottom near the heater.
Symptoms You May Notice
Dishes not fully clean after cycle
Food residue remains on dishes because the water did not reach a high enough temperature for effective cleaning and grease cutting.
HE error displayed on panel
The control panel shows HE during the wash phase when the target temperature is not reached.
Cycle runs much longer than normal
The dishwasher extends the cycle time waiting for water to reach temperature, eventually timing out with HE.
Dishes feel cold after cycle ends
Opening the dishwasher immediately after a cycle reveals lukewarm or cool dishes instead of hot.
Possible Causes
Burned-out heating element
The resistive heating element develops a break in its coil, creating an open circuit that prevents any heat generation.
Requires ProfessionalFailed temperature sensor
The NTC thermistor sends incorrect temperature readings to the control board, causing it to believe water is not heating when it actually is (or vice versa).
Requires ProfessionalCold water supply only
If the dishwasher is connected to a cold water line or the hot water has not reached the kitchen, the internal heater must raise water temperature from cold — which may exceed its capacity and trigger HE.
DIY PossibleSafe Checks You Can Do
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1
Pre-heat the water supply
Run the kitchen hot water faucet until the water is hot before starting the dishwasher. This ensures the dishwasher fills with warm water, giving the internal heater a head start.
This simple step resolves many HE errors, especially in homes where the water heater is far from the kitchen.
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2
Check water heater temperature
Verify your household water heater is set to at least 120°F (49°C). Samsung recommends an incoming water temperature of 120°F for optimal dishwasher performance.
If you recently lowered the water heater temperature (for safety or energy savings), it may be below the dishwasher minimum.
When to Call a Professional
Contact a qualified technician if:
- HE persists even with hot water supply and pre-heating
- No heat is produced during any cycle — water stays cold throughout
- The heating element is visibly cracked or corroded when inspected through the tub bottom
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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