Owner cleaning covers the specific accessible tasks described in the manual. Removing covers, working on wiring or opening sealed systems involves different risks and competence.
Understanding this situation
A persistent problem after routine maintenance does not expand the owner's permitted access. Some components may look reachable through a flap but remain protected or unsuitable for dismantling.
A useful next step
Stop at the documented boundary and describe what has already been cleaned. Provide the full model and remaining symptom. For heat-pump equipment, sealed refrigerant-circuit work is excluded from this service and must not be attempted as a home cleaning task.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.