It helps distinguish routine care from a symptom that began after a particular treatment. A clear record is more useful than a claim that it is cleaned regularly.
What the observation means
Include the actual product and any interrupted sequence. This does not establish that maintenance caused the fault; it gives the assessor relevant history.
A useful next step
Retain the instructions and receipts where available. Do not repeat a treatment to prove a suspected connection. Stop use for poor drainage, leaks or electrical symptoms and provide the existing record when arranging help.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.