How it works
How a Tumble Dryer Works
A system-level explanation designed to make error codes and symptoms easier to understand.
Normal operating sequence
1. TumbleA motor turns the drum while clothes repeatedly pass through moving air.
2. Move airA fan/blower pulls or pushes air through the drum and lint filtration path.
3. Add or move heatConventional dryers use electric or gas heat. Heat-pump dryers transfer heat through a refrigeration circuit.
4. Remove moistureVented dryers exhaust moist air outside. Condenser and heat-pump dryers condense moisture into a tank or drain.
5. Control drynessMoisture sensors, temperature sensors and timers determine when heat should reduce or stop.
Main components
These are the component names most likely to appear in manuals, error-code explanations and service conversations.
- Lint filter
- Blower/fan
- Heater or gas burner
- Heat-pump circuit on applicable dryers
- Moisture sensor
- Thermistors/thermostats
- Drum motor/belt
- Condensate pump on some models
What a symptom can tell you
A symptom usually narrows the affected system, not the exact failed part. For example, “not draining” can involve a blockage, installation, pump, sensor or control problem. Use the exact model documentation before moving beyond user-accessible checks.
Do not infer a failed part from one symptom: Error codes and symptoms are diagnostic clues. They are not automatic parts orders.