A dryer that spins but doesn’t heat is often fixable with some DIY troubleshooting. First, check the breaker and gas valve (if applicable). Then, inspect the venting system for clogs. If those steps don’t work, more in-depth troubleshooting may be needed. This guide provides a systematic approach to diagnosing and potentially fixing the problem.

Safety First: Before working on your dryer, disconnect it from the power source or gas line to prevent electrical shock or gas leaks.

Quick Checks

  • Check the Breaker: A tripped breaker is a common cause. Reset it by flipping it to the “off” position and then back to “on.”
  • Check the Gas Valve (for gas dryers): Ensure the gas valve connected to the dryer is fully open.
  • Check for Overloading: Overloading restricts airflow. Try running a smaller load.

In-Depth Troubleshooting

Here’s a systematic approach to finding the cause:

1. Confirm Power and Settings

  • Double-Check the Outlet: Ensure the dryer is plugged in properly. Test the outlet with a voltage tester to confirm 220-240 volts for electric dryers. If there’s no power, the issue is with the outlet.
  • Ensure the Correct Cycle: Select a heat-generating cycle like “high heat” or “normal,” not “air fluff” or “no heat.”

2. Inspect the Venting System

A clogged vent is a frequent cause. Restricted airflow prevents proper heating and can trigger safety shut-offs.

  • Detach the Vent: Carefully disconnect the vent hose from the back of the dryer.
  • Run the Dryer Briefly: Turn on the dryer for 5-10 minutes with the vent detached. If it now produces heat, the problem is a clogged vent.
  • Inspect and Clean the Venting:
    • Lint Trap: Clean the lint trap after every load.
    • Vent Hose: Disconnect the vent hose from both ends. Inspect for kinks, bends, or clogs. Replace damaged hoses. Replace flexible foil or plastic vent hoses with rigid metal ducting.
    • Wall Vent: Check the outside vent opening for obstructions.
    • Ductwork: For in-wall ductwork, consider hiring a professional for cleaning.
  • Reassemble the Vent: Securely reassemble the vent system.

3. Check the Heating Element (Electric Dryers Only)

If the venting is clear, the heating element is the next likely issue. Disconnect the dryer from power before working on it.

  • Locate the Heating Element: Usually in the lower back of the dryer, behind an access panel. Consult your dryer’s service manual.
  • Inspect the Element: Visually inspect for damage, such as breaks, burns, or corrosion.
  • Test the Element with a Multimeter:
    • Set your multimeter to the “Ohms” setting (resistance).
    • Disconnect the wires connected to the heating element terminals.
    • Place one probe on each terminal.
    • A working element should show a resistance reading (typically between 10 and 50 Ohms). “OL” (open loop) or a very high reading indicates a broken element. Replace it.
    • Important Safety Note: Before reconnecting wires, ensure the heating element isn’t grounded to the dryer chassis. Test resistance between each terminal and the dryer’s metal frame. There should be no continuity (infinite resistance). Continuity indicates a short, which could be dangerous.
  • Replace the Heating Element: Purchase a replacement element designed for your dryer model. Follow instructions in your service manual or online videos.

4. Investigate Other Potential Components (Less Common)

These require more advanced troubleshooting and may be best left to a technician.

  • Thermal Fuse: A safety device that blows if the dryer overheats. Test it with a multimeter for continuity. No continuity means it’s blown and needs replacement. A blown fuse often indicates airflow or other overheating issues, so address those first.
  • Thermostat: A faulty thermostat can prevent the element from turning on.
  • Timer/Control Board: Malfunctioning timers or control boards can also cause heating problems.
  • Gas Valve Solenoids (Gas Dryers Only): Faulty solenoids can prevent the burner from igniting.

Prevention

Regular maintenance can prevent many issues:

  • Clean the lint trap after every load.
  • Inspect and clean the vent hose at least once a year.
  • Avoid overloading the dryer.
  • Periodically check the outside vent for obstructions.

If you’re uncomfortable working with electrical components or gas appliances, or if these steps don’t work, contact a qualified appliance repair technician.