Dryer runs but does not heat at all (no error code displayed)

Safety first: Unplug the dryer and verify the drum is cool before servicing.

• Check power supply: For electric dryers, verify at the breaker panel that both poles of the 240 V breaker are on. A half-tripped breaker can allow the motor to run without heat.
• Inspect thermal fuse: Remove the rear panel, locate the thermal fuse on the blower housing, and test for continuity. Replace if open and clean the vent system thoroughly.
• Test heater element: Measure resistance across the heater terminals. Replace the heater assembly if open.
• Check thermostats: Test the cycling and high-limit thermostats for continuity at room temperature. Replace any that are open.

After replacing failed components, run a test cycle and monitor exhaust temperature. If the fuse blows again, there is an unresolved airflow or control issue that needs professional diagnosis.