Compare the outcome
Describe food deposits, greasy residue and water droplets separately. Include whether all racks and materials are affected on the same completed programme.
Why this matters
Water circulation, loading, detergent use and drying behaviour can overlap, but they should not be treated as one confirmed component fault. Assessment can begin with the actual result rather than a guessed heater replacement.
A useful distinction
A greasy finish across every item differs from a few sheltered cups retaining water. Describing the physical result in ordinary language is more useful than applying a technical label that may suggest the wrong investigation.