What does Samsung Clothes Dryer Error Code HE mean?

Diagnose and resolve the Samsung Clothes Dryer error code HE (Heating error) with our step-by-step DIY instructions.

How do I fix the Samsung Clothes Dryer Code HE error?

Diagnose the Samsung Clothes Dryer code HE by following our step-by-step testing checklist. Always disconnect power and shut off water or gas lines before servicing.

Samsung Clothes Dryer HE Error Code: Step-by-Step Fix

Quick Summary Answer: The Samsung clothes dryer HE error code indicates a Heating Error, typically caused by an overheating condition, a shorted-to-ground heating element, or a faulty thermistor. To fix it, start by clearing any lint blockages in your exhaust vent, then perform a hard reset by disconnecting power for 10 minutes. If the code persists, test the heating element, thermal fuse, and thermistor for electrical continuity using a multimeter.

Seeing the HE code flash on your Samsung dryer display can instantly halt your laundry routine. As field service technicians, we run into this specific heater error code on Samsung electric and gas dryers nearly every week.

This error code means the main control board detects an abnormal heating cycle. In most cases, the machine detects that temperatures inside the drum are rising too fast, getting too hot, or failing to heat properly.

Fixing this problem yourself is entirely doable with basic tools and a systematic diagnostic approach. Our team wrote this guide to help you isolate the root cause, test components, and restore your dryer without paying an expensive service bill.

SAFETY WARNING: Before inspecting, disassembling, or testing any internal components, unplug your dryer from the electrical outlet. For 240V electric dryers, switch off the double-pole circuit breaker in your home’s breaker panel. Turn off the manual gas shut-off valve if you own a gas dryer.

Diagnostic & Cost Summary Table

We put together this quick overview to help you gauge the time, tools, and budget required for each stage of troubleshooting.

Diagnostic Step	Est. Time	Tools Needed	Est. DIY Cost
Power Reset & Vent Inspection	10–15 mins	Flashlight, Vent Brush	$0 – $15
Airflow & Ductwork Cleanout	20–30 mins	Vacuum, Duct Cleaner Tool	$0 – $25
Heating Element Continuity Test	30–45 mins	Phillips Screwdriver, Multimeter	$0 (Replacement: $35–$70)
Thermal Fuse & Thermostat Check	30–45 mins	Multimeter, Nut Driver Set	$0 (Replacement: $10–$20)
Thermistor Resistance Test	30–40 mins	Digital Multimeter	$0 (Replacement: $10–$18)
Main Control Board Relay Check	45–60 mins	Screwdriver Set, Work Gloves	$0 (Replacement: $110–$200)

What Does Samsung Error Code HE Actually Mean?

Samsung dryers rely on a closed-loop monitoring network consisting of a thermistor, high-limit thermal fuses, and a main control board. The control board monitors the thermistor’s internal electrical resistance to track drum temperature in real time.

When the thermistor detects rapid, uncontrolled heating, the board immediately shuts off the cycle and displays HE, hE, or HC (Heating Control). This protective lock stops your dryer from melting internal plastic components, ruining clothes, or causing a fire.

On electric models, this code usually points to a grounded element that stays on constantly. On gas models, the code generally signals a failed gas valve coil, ignition sequence failure, or severe exhaust airflow restriction.

[Main Control Board] <--- (Resistance Signal) ---> [Thermistor Sensor]
        |                                                 |
(Power Relays)                                    (Monitors Drum Temp)
        |                                                 |
        v                                                 v
[Heating Element / Burner] ------ (Heats Air) ------> [Drum Chamber]

Top Causes Behind the Samsung HE Error

1. Shorted or Grounded Heating Element

Electric Samsung dryers feature a metal heating element housing that holds strung nickel-chromium alloy coils. Over time, heat cycles cause the metal wire to expand, sag, or break.

If a broken coil sags and touches the metal casing, it creates a short circuit to ground. This short causes the element to stay continuously energized with 120 volts of electricity, even when the control board tries to turn off the heat.

2. Blocked Exhaust Vent Line

Restricted airflow is the leading trigger for overheating errors. Lint buildup inside the internal blower housing, transition hose, or exterior wall duct stops hot air from escaping.

When air cannot circulate freely, heat builds up rapidly inside the drum housing. The thermistor registers this temperature spike and trips the HE error code to prevent thermal damage.

3. Blown Thermal Fuse or High-Limit Thermostat

Samsung dryers carry protective safety devices directly on the heater duct. The high-limit thermostat shuts off power to the element if duct temperatures spike, while the thermal fuse blows permanently to break the electrical circuit if limits are exceeded.

If a high-limit thermostat fails closed or a thermal fuse breaks open due to severe heat, the system registers an abnormal heating condition and throws an error code.

4. Defective Thermistor (Temperature Sensor)

The thermistor is a small sensor mounted on the blower housing that changes its electrical resistance based on exhaust air temperature. At room temperature (77°F), a functional Samsung thermistor reads around 10,000 Ohms (10k Ohms).

If the thermistor goes out of calibration, it sends incorrect resistance values to the main board. The board misinterprets these false readings as severe overheating and halts the dryer immediately.

5. Stuck Control Board Heater Relay

The main electronic control board uses mechanical relays to switch power to the heating element. High electrical amperage passing through these relays can cause their internal metal contacts to fuse or weld shut over time.

When a relay welds shut, full line voltage flows to the heating element constantly. The drum turns into an oven, triggering the thermistor to lock out the system under an HE error.

6. Gas Valve Solenoid or Igniter Failure (Gas Models)

Gas dryers use a silicon carbide igniter and solenoid coils to release and light natural gas or propane. If the gas valves fail to open cleanly, or if the flame sensor misfires, the dryer cannot maintain its target temperature profile.

The control board registers this erratic temperature curve as a heating loop failure and displays the HE code on screen.

Step-by-Step DIY Diagnostic Checklist

Follow this quick inspection sequence before breaking out your toolkit.

Hard Reset: Unplug power for 10 full minutes to clear stored board memory.
Exhaust Duct Check: Disconnect the rear flex duct and feel for strong exhaust airflow during a timed dry cycle.
Lint Screen Inspection: Inspect the lint screen mesh for hidden buildup or fabric softener film.
Element Frame Inspection: Look inside the heater housing for broken coil wires touching the metal frame.
Continuity Testing: Use a multimeter to check the element coils, high-limit thermostat, and thermal fuse.
Thermistor Ohm Check: Measure thermistor resistance at room temperature against factory calibration specs.

Step-by-Step DIY Diagnostic and Repair Guide

Step 1: Perform a Hard Power Reset

Electronic control boards can experience temporary software glitches caused by home power surges. Performing a full system reset clears temporary memory faults.

Unplug the dryer power cord from the wall outlet or switch off the circuit breakers.
Leave the machine powered down for at least 10 minutes.
While the dryer is unpowered, press and hold the Power/Start button for 5 seconds to drain residual charge from board capacitors.
Plug the dryer back in and run a short Timed Dry cycle.

If the error clears and the dryer operates normally, monitor your next few loads closely. If the code reappears immediately, proceed to airflow diagnostics.

Power Disconnect (10 Mins) ---> Drain Capacitors ---> Re-Power & Test Cycle

Step 2: Clear the Ventilation System

Airflow restrictions are responsible for more than half of all HE codes we see in the field. Cleaning your ducts requires minimal tools and protects your machine from repeat failures.

Unplug the dryer and slide it forward to reach the rear vent exhaust connection.
Loosen the screw clamp holding the flexible transition hose to the wall port.
Pull the duct free and inspect the inside with a flashlight.
Run a flexible duct lint brush through the wall pipe to clear packed lint.
Clean out the exterior exhaust hood louvers on the outside of your house.

Reattach the transition hose, restore power, and test the machine. Make sure your transition flex pipe is structured metal or rigid aluminum rather than foil or plastic coil tubing, which crushes easily.

[Dryer Outlet] ===(Rigid Metal Hose)===> [Wall Duct] ===> [Exterior Hood]
                           (Check For Lumps & Kinks)

Step 3: Disassemble the Dryer Cabinet

To access internal heating components on a Samsung front-load dryer, you must open the cabinet enclosure.

Remove the two Phillips screws securing the top panel at the rear of the machine.
Slide the top panel backward an inch, lift it clear, and set it aside.
Pull out the detergent drawer (on matching washer setups) or unscrew the top control panel mounting screws.
Gently pop the plastic tabs along the top edge of the control panel and unclip the wiring harness connectors.
Open the front door and unscrew the mounting screws securing the front panel door frame.
Disconnect the door switch wire harness connector.
Lift the front panel up and off its bottom support hooks.

Now you have clear access to the internal drum assembly, front bulkhead, and bottom heater housing.

[Remove Rear Screws] --> [Slide Off Top Panel] --> [Unclip Control Board]
                                                           |
[Remove Bulkhead] <---- [Disconnect Door Harness] <---- [Remove Front Door Panel]

Step 4: Test the Heating Element for a Grounded Short

Once inside, locate the long galvanized metal heater assembly tube on the right side of the base plate.

Pull the wire harness leads off the two primary heating element terminal pegs.
Set your multimeter to the lowest Ohms resistance scale ($\Omega$) or Continuity mode.
Touch one meter probe to the left element terminal and the second probe to the right element terminal.
A good heating element coil will display a resistance reading between 10 and 50 Ohms.

Next, test for a dangerous grounded short circuit:

Keep one meter probe on an element terminal pin.
Touch the second meter probe firmly to the bare galvanized metal outer casing of the heater box.
Your multimeter should show OL (Open Line) or infinite resistance.
If your meter beeps or shows a numerical resistance value, the heating coil is broken and shorted to ground. Replace the complete element assembly.

[Multimeter Probe 1] ---> Terminal Pin 1  \
                                           ) ==> Reads 10-50 Ohms (Good)
[Multimeter Probe 2] ---> Terminal Pin 2  /

[Multimeter Probe 1] ---> Terminal Pin 1  \
                                           ) ==> Reads OL / No Continuity (Good)
[Multimeter Probe 2] ---> Metal Casing   /

Step 5: Test Safety Cut-Off Thermostats and Thermal Fuses

Samsung heater housings host two critical thermal safety sensors on their metal framework: the high-limit thermostat and the thermal cut-off fuse.

Locate the two small round sensors attached to the side and front of the heater duct.
Disconnect at least one electrical wire lead from each component before testing.
Place meter probes across the two metal spade terminals of the thermal fuse.
Your meter should read 0 Ohms (direct continuity).
If the meter displays OL, the internal fuse element is blown and must be replaced alongside a thorough duct cleaning.

Repeat this exact continuity test on the neighboring high-limit thermostat. If either device fails the test, replace it immediately using OEM replacement parts.

Step 6: Test the Thermistor Resistance

The thermistor is usually located on the front left blower housing housing, right next to the lint filter chute.

Disconnect the two-wire plug from the thermistor terminals.
Set your digital multimeter to the 20k Ohms (20,000 $\Omega$) range.
Place meter probes across the two thermistor metal terminal pins.
At normal room temperature (77°F / 25°C), the sensor should measure approximately 10,000 Ohms (10k $\Omega$).

If your home is colder or warmer, refer to the temperature resistance curve below:

Ambient Room Temp (°F)	Ambient Room Temp (°C)	Expected Resistance (k$\Omega$)
50°F	10°C	~19.9 k$\Omega$
68°F	20°C	~12.5 k$\Omega$
77°F	25°C	~10.0 k$\Omega$
86°F	30°C	~8.0 k$\Omega$
104°F	40°C	~5.3 k$\Omega$

If your readings deviate significantly from these resistance curves (for instance, reading 0 Ohms or infinite resistance), replace the thermistor.

Step 7: Inspect and Diagnose the Control Board Relay

If the heating element, thermal fuse, thermistor, and ducting pass all physical and electrical tests, inspect the main electronic control board.

Locate the main control board housing mounted inside the top panel or rear control tower.
Unclip the plastic protective cover to access the printed circuit board (PCB).
Inspect the board surface for dark burn marks, melted solder joints, or swollen capacitors around the large black rectangular relays.
Disconnect power and check continuity across the high-voltage relay contacts outputting power to the heater wire harness.
If the relay contacts display closed continuity while the dryer is totally unpowered, the relay internal contacts are welded shut.

Replacing the main control board fixes a stuck relay issue and stops continuous power from reaching the heating element.

Control Board PCB --> [Stuck Closed Relay Contacts] --> Sends Constant 240V --> HE Error

Gas Model Troubleshooting Specifics

While electric dryers rely on heavy nickel coils, gas models use a burner assembly equipped with an igniter, flame sensor, and gas coils.

When troubleshooting an HE error code on a gas model:

Check Igniter Resistance: Disconnect the igniter plug and test across its leads. Silicon carbide igniters should read between 50 and 400 Ohms.
Test Gas Valve Solenoid Coils: Gas coils sit directly on top of the gas valve body. The 2-terminal coil should read around 1,200 Ohms, while the 3-terminal coil should read around 1,365 Ohms across terminals 1 & 2, and 560 Ohms across terminals 1 & 3.
Inspect Flame Sensor: Make sure the metal bracket holding the flame sensor is free from oxidation or loose connections.

[Gas Line] ---> [Gas Valve Coils] ---> [Igniter Glows Red] ---> [Flame Sensor Detects Heat]

Preventing Future HE Codes & Maintenance Schedule

Routine preventive maintenance helps protect internal thermal circuits, reduces electrical draw, and stops lint build-up.

Essential Dryer Maintenance Routine

Clean Screen After Every Single Load: Pull out the lint screen and clear collected surface lint before pushing the start button.
Wash Lint Screen Monthly: Fabric softener sheets deposit an invisible, waxy coating over screen mesh pores. Scrub the screen in warm soapy water with a soft nylon brush once a month to restore proper airflow.
Deep Clean Internal Blower Housing Bi-Yearly: Remove the lint filter housing chute and insert a long vacuum crevice attachment to clear loose lint accumulating around the blower wheel.
Inspect Exterior Ductwork Annually: Clear out your home’s wall exhaust line using a drill-powered duct cleaning brush kit at least once a year.

Daily: Clear Lint Screen ---> Monthly: Wash Screen Mesh ---> Yearly: Clean Wall Vent Line

Frequently Asked Questions (FAQ)

Can I safely run my dryer while the HE code is active?

No, you should not run a dryer displaying the HE code. The error code signals an overheating condition or grounded heating circuit that can burn clothes, melt internal parts, or present a fire risk. Always disconnect power and clear the fault before running another load.

Why does my Samsung dryer show HE even when it feels cold inside?

If a thermal fuse blows because of an initial overheating spike, the broken fuse cuts off all electrical current to the heater element. While the drum stays cold, the main control board retains the error status or reads incorrect sensor signals, keeping the HE code active on your display.

Are Samsung error codes HE, hE, and HC the same thing?

Yes, these codes all reference the same underlying heating control circuit failure. Different Samsung generations use different digital display formats (uppercase HE, lowercase hE, or HC for Heating Control), but diagnostic steps for all three remain identical.

How much does it cost to fix an HE error code professionally?

A professional repair technician typically charges between $150 and $300 to replace an element, thermistor, or fuse, depending on labor rates in your region. DIY repairs using OEM replacement parts usually cost between $15 and $60.

Can a bad door switch cause a Samsung HE error?

A faulty door switch will generally prevent the dryer from starting or trigger a dC / do (Door Open) code instead of an HE code. However, if a door switch fails in a way that allows the motor to stop while heater relays stay energized, severe thermal buildup can trigger the HE fault code.

Wrapping Up

Fixing a Samsung clothes dryer showing the HE error code comes down to systematically testing three primary factors: airflow, circuit continuity, and temperature resistance. Clear any vent restrictions, test your heating element for grounded coils, check thermal safety devices with a multimeter, and verify thermistor readings against factory specifications. Following these steps restores safe, reliable drying performance while saving you money on service calls.