Repair help
Dryer Won't Start? The 10 Most Common Problems and Fixes
AAZparts Team
Updated on May 14, 2025
5 min read
If your dryer has suddenly stopped working, won’t start, or fails to complete a cycle, the problem might be easier to fix than you think. In many cases, replacing a faulty component can get your dryer running again without the need for expensive repairs. In this guide, we’ll walk you through the 10 most common reasons your dryer isn’t working and what you can do to fix them. We’ll also point you to the specific dryer parts available at AZParts that can help you resolve each issue.
1. Power Supply Problems
One of the first things to check when your dryer won’t turn on is the power source. Dryers require a consistent and stable power supply to function properly.
How to fix it:
Make sure the dryer is securely plugged into a functioning outlet. Test the outlet using another device to ensure it’s delivering power. Also, inspect the power cord for signs of wear, burns, or fraying. If it’s damaged, the cord should be replaced immediately.
2. Blown Thermal Fuse
The thermal fuse is a safety device that shuts off the dryer’s heating element if it gets too hot. If this fuse blows, the dryer may stop working entirely.
How to fix it:
Use a multimeter to test the thermal fuse for continuity. If it shows no continuity, the fuse has blown and must be replaced. Also check the exhaust vent for clogs, which can cause overheating.
Suggested part:
Thermal Fuse for electric and gas dryers — find compatible options at AZParts.
3. Faulty Door Switch
Your dryer will not operate if the door is not properly closed — and if the door switch is broken, the appliance won’t register that the door is shut.
How to fix it:
Manually press the door switch with the door open. If you don’t hear a clicking sound or if your multimeter shows no continuity, the switch likely needs to be replaced. You can find a Dryer Door Switch compatible with brands like Kenmore, Whirlpool, GE, and more at AZParts.
4. Start Switch or Timer Malfunction
If your dryer doesn't start even after pressing the start button, the issue could be with the start switch or timer control.
How to fix it:
Test the start switch with a multimeter. If it doesn’t show continuity when pressed, it needs to be replaced. For timer-controlled models, a faulty timer can also prevent the dryer from starting and should be checked.
Suggested part:
If replacement is needed, consider a Dryer Start Switch or Timer compatible with your model. You can find these parts at AZParts for a range of popular dryer brands.
5. Drive Motor Failure
The drive motor powers the dryer drum and blower wheel. A failure here may result in the dryer not starting or shutting off mid-cycle.
How to fix it:
Listen for a humming sound when the dryer is running. This could indicate a seized motor. Check for blockages in the blower wheel or worn-out motor bearings. If the motor is defective, it will need replacement.
Suggested part:
A Dryer Drive Motor replacement is available on AZParts for your dryer model.
6. Broken Belt or Belt Switch
Most dryers use a belt to rotate the drum. If the belt breaks, the motor may run but the drum won’t spin. In some models, a broken belt will trigger the belt switch, stopping the dryer.
How to fix it:
Remove the front panel and inspect the belt for damage. If it’s broken, frayed, or stretched, it should be replaced. Test the belt switch for continuity as well.
7. Faulty Moisture Sensor
A malfunctioning moisture sensor may cause the dryer to stop prematurely or not start at all in automatic drying cycles.
How to fix it:
Clean the moisture sensors with a cloth and rubbing alcohol to remove any residue. If the dryer continues to shut off early or doesn’t start, replacing the sensor is recommended.
8. Clogged Lint Trap or Vent
A clogged lint trap or exhaust vent can reduce airflow, leading to overheating, tripping the thermal fuse, or causing the dryer to shut down mid-cycle.
How to fix it:
Clean the lint trap after every use. Also, inspect the vent hose and the outside exhaust for blockages. Removing lint buildup improves airflow and reduces the risk of future issues.
9. Defective Cycling Thermostat
The cycling thermostat controls the dryer’s temperature. If defective, it can prevent proper heating or cause the dryer to shut off unexpectedly.
How to fix it:
Test the cycling thermostat for continuity. If it fails the test, replacing it should restore normal heating functions.
Suggested part:
Find a Dryer Thermostat that fits your model at AZParts to restore proper temperature regulation.
10. Control Board or Electronic Failure
If none of the previous issues seem to apply, the problem could be with the dryer’s main control board or its electronic system.
How to fix it:
Inspect the control board for any visible damage such as burn marks. If the board is unresponsive or displaying error codes, replacing the board is likely necessary.
Final Thoughts
When your dryer stops working, it doesn’t always mean you need a new appliance. In many cases, identifying the faulty part and replacing it can restore your machine to full function. At AZParts, we offer a wide selection of genuine dryer parts — from fuses and motors to control boards — to help you fix your dryer quickly, affordably, and safely.
DryerRepairTroubleshooting
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