How To Fix a Samsung Dryer That Doesn’t Stop Running – 7 Pro Tips

How To Fix a Samsung Dryer That Doesn't Stop Running - 7 Pro Tips
Table of Contents

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Inspect the Timer Configuration

Troubleshooting a Samsung dryer that won’t stop running involves inspecting the timer configuration:

  • Unplug the dryer and remove the back panel to access the control console.
  • Check the timer knob for security and any signs of damage.
  • If the knob is loose or faulty, consider replacing it with a compatible one.
  • Test the timer’s functionality using a multimeter to ensure continuity across all terminals.
  • Follow your model’s service manual for accurate testing procedures.
  • If the timer is faulty, it may need replacement as per manufacturer guidelines.

Ensure thorough examination of other potential issues like malfunctioning door switches or control board problems. Maintain optimal dryer performance by regularly cleaning lint filters, moisture sensors, and dryer vents.

Check the Door Interlock

When dealing with a Samsung dryer that won’t stop running, start by checking the door interlock, a safety feature ensuring the dryer operates only when the door is closed securely. Here’s how:

  • Unplug the dryer and open the door to locate the door switch, usually near the top or side.
  • Inspect for damage like loose wires, burnt connections, or wear.
  • Test the door switch by firmly closing the door; listen for a clicking sound indicating proper engagement.
  • If there’s no click or if the door easily opens and closes without resistance, the switch may be faulty and need replacement.

Keep in mind:

  • Troubleshooting involves examining various components, including timer configuration and control board.
  • While fixing a faulty door interlock might solve the issue for some, factors like moisture sensor problems could also cause continuous running.
  • Thoroughly exploring all potential causes outlined here will help effectively resolve the continuous running problem with your Samsung dryer.

Verify the Moisture Detection Sensor

When troubleshooting a Samsung dryer that won’t stop running, verifying the moisture detection sensor’s functionality is key:

  • Locate the moisture detection sensor, often near the lint filter or inside the drum.
  • Clean it carefully with a soft cloth or cotton swab to remove accumulated debris.
  • Test its functionality by running a quick cycle with a small load of damp clothes.
  • Observe if the dryer stops when it detects dry clothes; if not, there may be a sensor or system issue.
  • Consider further troubleshooting like checking wiring connections or inspecting other components.

Scrutinize the Cycling Thermostat

When diagnosing a Samsung dryer that won’t stop running, it’s essential to focus on the cycling thermostat, which regulates the drum’s temperature. Here’s what to do:

  • Unplug the dryer and access its internal parts.
  • Locate the cycling thermostat near the blower wheel housing or exhaust duct.
  • Disconnect any wires and use a multimeter to check its resistance.
  • A functioning thermostat should show continuity; if not, it needs replacement.

Evaluate the Control Unit

A critical component that could cause a Samsung dryer to run continuously is the control unit, also known as the control board or main control board. Here’s how to assess it:

  • Check the physical condition of the control unit for any visible damage or burnt parts.
  • Look for abnormalities like blackened areas or melted components, indicating a malfunction.
  • Use a multimeter to test the control unit for electrical continuity and proper voltage supply.
  • Disconnect power, remove the back panel, and detach wires to access the control board.
  • Test each connection point according to specifications in the dryer’s service manual.
  • If no visible damage and all electrical tests pass, consider replacing the control unit.
  • Contact Samsung customer support or a professional repair service for assistance in ordering a specific replacement.

Addressing a faulty control unit can often resolve continuous running issues in a Samsung dryer. If problems persist, explore other potential causes such as testing the cycling thermostat and inspecting additional crucial components like timers, switches, and moisture sensors.

Check the Start Switch Operation

If your Samsung dryer keeps running without stopping, a possible culprit could be a faulty start switch. Here’s how to check and address the issue:

  • Safety first: Unplug the dryer to avoid electrical hazards.
  • Locate the start button on the control panel and inspect it for damage or dirt buildup.
  • Use a multimeter in continuity mode to test the start switch’s functionality.
  • Press the start button while touching the multimeter probes to its terminals; lack of continuity or inconsistent readings indicate a faulty switch.
  • Replace the start switch following instructions in your user manual or online resources tailored to your model.
  • Prioritize safety throughout the process by following proper handling procedures and seeking professional assistance if needed.

Inspect the Ventilation System

To ensure your Samsung dryer operates efficiently, inspect its ventilation system regularly. Here’s how:

  • Disconnect the dryer from power and move it away from the wall to access the rear panel and vent hose.
  • Check the vent hose for damage, lint buildup, or debris, and clean it thoroughly.
  • Ensure there are no kinks or bends in the vent hose that could restrict airflow.

Examine the exterior vent hood for obstructions like leaves or debris, ensuring it opens freely when hot air is expelled and closes tightly afterward.

Tips To Prevent a Samsung Dryer From Continuous Operation

To prevent a Samsung dryer from continuous operation, follow these tips:

  • Regularly inspect the timer knob to ensure it’s in good condition and functions properly.

Check the ventilation system to maintain efficient drying:

  • Ensure the vent hose is clear of obstructions and not kinked.
  • Clean the dryer vent regularly to maintain airflow and prevent overheating.

Clean and maintain the moisture detection sensor:

  • Wipe off any dirt or lint buildup using a soft cloth or cotton swab dipped in rubbing alcohol.
  • Familiarize yourself with start switch testing:
  • Check the start switch mechanism for proper functionality to identify any issues early on.

By implementing these preventive measures and performing regular maintenance, you can avoid frustration and ensure optimal performance from your Samsung dryer while extending its lifespan.


Troubleshooting and fixing a Samsung dryer that doesn’t stop running can be a complex task, but armed with the right knowledge and tools, it is certainly achievable. By following the aforementioned seven pro tips, you can confidently diagnose and address potential issues with your Samsung dryer’s continuous operation.

By implementing these troubleshooting techniques along with proper preventive measures like regular cleaning and maintenance of your Samsung dryer, you can minimize potential issues related to continuous operation. Remember that seeking professional assistance may be necessary if all else fails or if you are uncomfortable performing certain repairs yourself.


How to fix a Samsung dryer that won’t stop running?

Inspect and reset the timer configuration, check the door interlock, verify the moisture detection sensor, scrutinize the cycling thermostat, evaluate the control unit, test the start switch, and inspect the ventilation system.

Why is my Samsung dryer continuously running?

Common causes include timer issues, a faulty door switch, moisture sensor malfunction, cycling thermostat problems, control board malfunctions, start switch issues, and improper ventilation.

How to prevent a Samsung dryer from continuous operation?

Regularly inspect and clean the timer knob, door switch, moisture sensor, cycling thermostat, control board, start switch, and ensure proper ventilation to prevent continuous dryer operation.

What tools are recommended for troubleshooting a Samsung dryer running constantly?

Utilize tools such as a multimeter, screwdrivers for component access, pliers for wire connections, and a vent cleaning kit to diagnose and resolve issues with a continuously running dryer.

When should I replace the control board in my Samsung dryer?

If the control board is inspected for malfunctions and resetting doesn’t work, consider replacing it to resolve issues with your Samsung dryer not stopping.

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