Dryer not heating
Dryer Not Heating: Causes & Fixes
If your dryer is running but not heating, it could be due to several reasons. Below, we’ll go over possible causes and how to fix them step by step.
1. Check the Power Source (For Electric Dryers)
Possible Cause:
Electric dryers require 240V power to generate heat. If one breaker trips, the dryer may still run but won’t heat.
Fix:
✅ Check the circuit breaker:
- Locate your home’s breaker panel.
- Find the dryer’s circuit breaker (it should have two linked switches).
- Flip the breaker off and then on to reset it.
✅ Check the power cord:
- Make sure the power cord is securely plugged in.
- If it looks damaged, replace it.
2. Gas Supply Issue (For Gas Dryers)
Possible Cause:
Gas dryers need a steady gas supply. If the gas valve is closed, the dryer won’t heat.
Fix:
✅ Check if the gas valve is open:
- The gas shutoff valve should be in the ON position (parallel to the pipe).
✅ Test another gas appliance:
- If other gas appliances (like a stove) aren’t working, there may be a gas supply issue in your home. Contact your gas provider.
3. Lint Buildup & Vent Blockage
Possible Cause:
A clogged lint filter or vent can restrict airflow, causing overheating and shutting off the heating element.
Fix:
✅ Clean the lint filter:
- Remove the lint filter and wash it with warm, soapy water.
- Dry it completely before putting it back.
✅ Check the exhaust vent:
- Disconnect the dryer vent hose from the back.
- Use a vacuum or brush to remove lint buildup.
- Make sure the vent outside your home is not blocked.
4. Faulty Thermal Fuse (Safety Mechanism)
Possible Cause:
The thermal fuse is a safety device that shuts off heat if the dryer overheats. If it blows, the dryer won’t heat.
Fix:
✅ Test the thermal fuse with a multimeter:
- Unplug the dryer.
- Locate the thermal fuse (usually on the blower housing or near the heating element).
- Remove the fuse and test it with a multimeter for continuity.
- If there’s no continuity, replace it.
5. Faulty Heating Element (For Electric Dryers)
Possible Cause:
The heating element produces heat in an electric dryer. If it’s burned out, the dryer won’t heat.
Fix:
✅ Test the heating element:
- Unplug the dryer.
- Locate the heating element (usually behind the drum).
- Test it with a multimeter for continuity.
- If there’s no continuity, replace it.
6. Defective Gas Igniter or Solenoid Valve (For Gas Dryers)
Possible Cause:
Gas dryers use an igniter to light the gas burner. If it’s defective, the dryer won’t heat.
Fix:
✅ Check if the igniter glows:
- Start the dryer and observe the igniter through the small panel.
- If the igniter doesn’t glow, it’s bad and needs replacing.
✅ Test the solenoid valve:
- If the igniter glows but the gas doesn’t ignite, the gas valve solenoids might be faulty.
- Replace them if necessary.
7. Malfunctioning Thermostat
Possible Cause:
The cycling thermostat regulates temperature. If it’s faulty, the dryer might not heat or overheat.
Fix:
✅ Test the thermostat with a multimeter:
- If there’s no continuity, replace it.
8. Timer or Control Board Failure
Possible Cause:
If all other components are working, the issue could be a faulty timer or control board.
Fix:
✅ Inspect the control board for burnt marks or damage.
✅ If the timer knob doesn’t advance, test it with a multimeter.
Final Steps: When to Call a Technician
If you’ve checked everything and the dryer still won’t heat, you may need a professional repair.
Call a technician if:
❌ You’re uncomfortable using a multimeter.
❌ The issue is with the control board or wiring.
❌ You smell gas (turn off the gas supply immediately and call your provider).
Would you like help finding replacement parts for your dryer model? 🚀
