Poor cleaning may relate to spray arms, filters, detergent, water temperature or a component fault. The cause depends on the symptoms and model.
Ask About This ProblemRecord when the problem happens, any unusual sounds and any error code shown on the display.
Follow only the basic checks recommended for your exact model. Do not dismantle electrical or water-connected components.
If the problem persists, share the brand, model, location and symptoms to check service availability.