How it works
How a Dishwasher Works
A system-level explanation designed to make error codes and symptoms easier to understand.
Normal operating sequence
1. FillAn inlet valve admits a controlled quantity of water. Some machines monitor flow, time, level or pressure.
2. CirculateA wash/circulation pump sends water through spray arms. Filter condition and spray-arm movement directly affect cleaning.
3. HeatWater may be heated during the programme. Temperature sensing and heater protection vary by model.
4. Drain and rinseA drain pump removes dirty water. The dishwasher refills for one or more rinse stages.
5. DryDrying may use residual heat, a heater, fan-assisted airflow, automatic door opening, mineral systems or condensation depending on design.
Main components
These are the component names most likely to appear in manuals, error-code explanations and service conversations.
- Inlet valve
- Sump/filter
- Circulation pump
- Drain pump
- Heater/heat pump
- Temperature/turbidity sensors
- Float/leak detection
- Door latch
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.