Compare plastics with plates and glassware
Plastic containers retain less heat than heavier crockery and can remain wet when plates are dry. Concave bases and upturned rims also hold pools of water that no drying system can readily remove. Record whether the whole load is wet or only particular items and surfaces.
Load items at the angles recommended by the manufacturer, leaving gaps rather than nesting bowls together. Water falling from an upper rack during unloading can wet already dry items below. These are loading observations, not evidence of a defective heater. A sudden change across previously dry glassware and plates is more informative.
Review the programme and rinse aid
Quick programmes and different drying options can produce different results. Check whether the chosen programme includes the drying stage you expect and whether an extra-dry option was changed. Some models use residual heat, others have fans or automatic door opening; not every dishwasher uses the same system.
Read the model’s rinse-aid instructions even if using an all-in-one tablet. Refill or adjust only as directed, and clean a spill according to the manual to avoid excess foam. Do not substitute washing-up liquid or other household products. Changing several settings at once makes it harder to tell which factor influenced the result.
If settings and loading do not explain the change, describe the drying pattern through our dishwasher repair enquiry service.
Recognise a pattern that needs assessment
A recurring wet load alongside poor cleaning, unusual cycle length or a heating message deserves assessment. Record the programme, whether it completed and whether dishes seemed normally warm when safely unloading. Do not open a hot running dishwasher, touch internal components or reach into water to estimate temperature.
If an automatic-opening door or fan behaves differently, mention the change rather than trying to force it. A blocked vent, control, sensor or heating issue may be relevant, but the visible result does not confirm one part. For models without automatic opening, follow the manual’s unloading guidance rather than propping the door open during a cycle.