Why won’t my Samsung dryer turn off after the cycle ends?

A common cause is a stuck relay on the electronic control board, faulty door switch, or malfunctioning timer that fails to signal the end of the cycle.

How do I reset my Samsung dryer when it won’t turn off?

Unplug the dryer for about 10 minutes, then plug it back in; this may clear a stuck relay or reset the control board.

Can a dirty moisture sensor cause my dryer to keep running?

Yes. If the sensor cannot detect that the clothes are dry due to lint buildup or residue, the dryer may continue running indefinitely.

When should I call a professional for my Samsung dryer that won’t turn off?

If after performing basic checks the dryer still won’t stop, the issue is likely with the control board or power relay and requires a technician's attention.

Samsung Dryer Won't Turn Off

By: Angel Vallejo

A Samsung dryer that won’t turn off can be frustrating and potentially dangerous. Whether your dryer keeps running even after the cycle ends or won’t stop when the door is opened, the problem could stem from a malfunctioning timer, a faulty control board, or even a stuck relay switch.

In this guide, we’ll walk you through the most common reasons your Samsung dryer won’t turn off and how to fix it. We’ll also share troubleshooting steps, repair options, and when to call a professional.

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Key Reasons for the Problem:

50% of reported issues are the

Timer

35% of reported issues are the

Control Board

13% of reported issues are the

Thermostat

2% of reported issues are the

All Other Causes

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Diagnostic and Troubleshooting Steps

Samsung Dryer Won’t Turn Off? This step-by-step guide walks you through the most common causes—from faulty door switches to control board glitches—and provides practical solutions to help you get your dryer running (and stopping) like it should.

Step 1:

Perform a Hard Reset

Unplug your dryer from the power source and wait at least 10 minutes.
Plug the dryer back in and check if the issue is resolved.

Step 2:

Check the Control Panel for Error Codes

Samsung dryers often display error codes for malfunctions.
Refer to your user manual or Samsung’s support website to interpret the code.

Step 3:

Inspect the Timer and Control Board

If your dryer has a mechanical timer, try manually advancing it.
If your dryer has an electronic control board, look for visible signs of damage, like burns or loose connections.

Step 4:

Test the Door Switch

Open the dryer door and press the door switch.
If the dryer keeps running, the switch may need replacement.

Step 5:

Clean the Moisture Sensor

Unplug the dryer
Locate the two metallic strips inside the drum — they're usually silver bars running parallel to each other, positioned on the front wall just inside the door
Dampen a cloth with isopropyl alcohol (not water — water can leave mineral deposits)
Wipe each sensor bar firmly until the cloth comes away clean
Allow to dry completely before running the dryer
Run a test cycle with a damp towel

Step 6:

Get a Home Warranty That Fits Your Appliance Needs

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Key Actions for Homeowners:

Clean the lint filter after every load. A clogged lint filter can cause overheating and sensor issues.
Inspect the door switch regularly. Ensure it clicks and functions properly.
Check for software updates. Some Samsung dryers have firmware updates that fix operational issues.
Schedule routine maintenance. Annual inspections can help catch problems early

Most Common Repairs Needed to Fix a Samsung Dryer That Won’t Turn Off

When your Samsung dryer won’t turn off, certain repairs are more commonly required than others. Below are the most frequent fixes:

Timer: Controls the dryer’s cycle. A faulty or stuck timer may prevent the dryer from stopping.
Motor Relay Switch: If stuck in the "on" position, it continues to power the motor after the cycle ends.
Control Board: As the brain of the dryer, a malfunctioning control board might fail to send the shut-off signal.

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Frequently Asked Questions

Why does my Samsung dryer keep running even after the cycle ends?
A Samsung dryer that won’t turn off after the cycle ends may have a faulty timer, a malfunctioning control board, or a stuck motor relay switch. A defective moisture sensor may also cause the dryer to continue running if it incorrectly detects that clothes are still damp. Try resetting the dryer first, and if the issue persists, inspect these components for possible replacement.
How do I reset my Samsung dryer if it won’t turn off?
To reset your Samsung dryer, unplug it from the power source and wait about 10 minutes. This allows the control board to reset. After plugging it back in, start a new cycle and see if the issue is resolved. If the dryer continues to run indefinitely, further troubleshooting may be needed.
Can a faulty door switch cause my Samsung dryer to keep running?
Yes. If the door switch is broken or stuck, the dryer may not recognize when the door is open, causing it to continue running. You can test the door switch by pressing it manually—if you don’t hear a clicking sound, the switch may need to be replaced.
When should I call a professional to fix my Samsung dryer?
If your Samsung dryer won’t turn off despite performing a reset and checking for common issues like a faulty door switch or moisture sensor, it’s best to call a professional. Problems with the control board, motor relay switch, or wiring may require expert repair to prevent further damage.

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