If your Samsung washing machine HE3 error code has suddenly appeared on the display, it indicates a specific malfunction within the appliance’s steam cycle operations. Unlike standard heating errors, this code points directly to the Steam function not operating normally, often preventing you from using the sanitize or steam-refresh cycles that are critical for deep cleaning.
This guide provides a comprehensive technical breakdown for diagnosing and fixing the HE3 error, specifically tailored for Samsung appliance repair DIYers and technicians.
Understanding the Samsung Washing Machine HE3 Error
The HE3 error is distinct from other “HE” codes. While HE1 typically refers to the main heating element used for washing water and HE2 relates to the dryer heater in combo units, HE3 is exclusively reserved for the steam function.
This error triggers when the control board detects that the steam generator (or the steam heater assembly) is failing to reach the required temperature or is reporting erratic data from its sensors.
Common Causes
- Faulty Steam Heating Element: The specific heater responsible for boiling water to create steam has failed or has an open circuit.
- Defective Steam Thermistor: The temperature sensor monitoring the steam boiler is sending incorrect resistance values.
- Wiring Harness Issues: Loose, burnt, or corroded wires connecting the steam generator to the main PCB.
- Malfunctioning Control Board: The relay responsible for sending voltage to the steam heater is damaged.
Step-by-Step Troubleshooting Guide
Before attempting any repairs, always unplug the washing machine and turn off the water supply. Working with high-voltage components like heating elements requires strict safety precautions.
1. Perform a Hard Reset
Sometimes, a momentary voltage spike can cause a false error.
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- Unplug the washer for at least 5 minutes.
- Press and hold the “Start/Pause” button for 5 seconds to discharge residual power.
- Plug it back in and run a short steam cycle to see if the error returns.
2. Locate the Steam Generator Assembly
On most Samsung front load washer models with steam capabilities, the steam generator is a separate component from the main wash heater.
- Access: Remove the top panel of the washer (usually secured by two screws at the back).
- Location: Look for a metal or plastic boiler assembly, often located near the top right or left, with water hoses and electrical connectors attached.
3. Test the Steam Heating Element
The steam generator has its own internal heating coil. You will need a multimeter to test its resistance (Ohms).
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- Set Multimeter: Set your meter to the lowest Ohms (Ω) setting.
- Disconnect Power: Remove the wire connectors from the steam heater terminals.
- Measure Resistance: Touch the probes to the two heater terminals.
- Normal Reading: A healthy steam heater typically reads between 10 to 40 Ohms. (Check your model’s specific tech sheet if available).
- Faulty Reading: If the meter reads “OL” (Open Loop) or infinity, the heating coil is broken and the steam generator assembly must be replaced.
4. Inspect the Steam Thermistor
The thermistor is the temperature sensor attached to the steam boiler. It tells the computer when the steam is ready.
- Test Method: Set your multimeter to the 20k or 40k Ohms setting.
- Measure: Disconnect the thermistor plug and measure across the pins.
- Normal Reading: At room temperature (approx. 77°F / 25°C), most Samsung thermistors should read between 10kΩ and 15kΩ or 40kΩ and 60kΩ depending on the specific model.
- Diagnosis: If the reading is zero (shorted) or infinity (open), or if the resistance doesn’t change when you gently warm the sensor with your hand, it is defective.
5. Check the Wiring Harness
Vibration during the spin cycle can cause connections to loosen over time.
- Trace the wires from the steam generator back to the control board.
- Look for any signs of pinching, burning, or corrosion.
- Ensure the grounding wire is securely fastened to the steam assembly.
When to Replace the Steam Generator
If the heating element tests “Open” (no continuity), you typically cannot replace just the coil. On most Samsung models, you must replace the entire steam generator assembly. This part usually includes the boiler tank, the heater, and sometimes the thermistor pre-installed.
Note: If your model does not have a separate steam boiler but supports steam cycles, it likely uses the main wash heating element located at the bottom of the tub with a low water level. In this case, troubleshooting effectively becomes the same as fixing an HE1 error—checking the main heater and NTC sensor at the bottom of the drum.
Summary of Technical Checks
| Component | Test Setting | Expected Result | Action if Failed |
|---|---|---|---|
| Steam Heater | Ohms (Ω) | 10 – 40 Ω | Replace Heater/Generator |
| Thermistor | Ohms (kΩ) | ~12kΩ or ~50kΩ (Room Temp) | Replace Sensor |
| Wiring | Continuity | 0 Ω (Continuous beep) | Repair Wiring |
If all components test fine but the “Samsung washing machine HE3 error” persists, the issue likely lies with the control board not sending the correct voltage to the steam unit. In such cases, professional error code troubleshooting by a certified technician is recommended to avoid costly misdiagnosis.
Frequently Asked Questions
What does the HE3 error code mean on a Samsung washer?
The HE3 error code indicates a specific malfunction within the washing machine’s steam cycle operations. It occurs when the control board detects that the steam generator is not reaching the required temperature or is receiving irregular data from the steam sensors.
Can I still use my washing machine if the HE3 code is displayed?
Yes, in most cases, you can still use standard wash cycles that do not utilize steam. However, specialized cycles like “Sanitize” or “Steam Refresh” will not work. It is recommended to address the issue promptly to prevent further electrical complications.
How is the HE3 error different from the HE1 or HE2 codes?
While all these codes relate to heating, they point to different components. HE1 refers to the main heating element for the wash water, and HE2 relates to the dryer heater in washer-dryer combo units. HE3 is exclusively reserved for the steam generator assembly.
Will a “hard reset” fix the HE3 error code?
A hard reset can clear the error if it was triggered by a momentary voltage spike or a software glitch. To perform this, unplug the washer for 5 minutes, press and hold the Start/Pause button for 5 seconds to discharge residual power, and then plug it back in. If the error returns, there is likely a hardware fault.
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What is the most common part that needs replacing for an HE3 error?
The most common culprit is a faulty steam generator assembly. Because the internal heating coil in the steam boiler often cannot be replaced individually, the entire assembly (which usually includes the boiler tank and heater) must be swapped out if the heating element tests “Open” with a multimeter.
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