An energy label can provide product information, but use the appliance's rating plate for the full service identity. The two labels serve different purposes.
What the observation tells you
Retail paperwork may omit a production suffix or refer to a range rather than the individual version. An energy-efficiency class also does not diagnose current performance; it reflects specified test information rather than a measurement of your present fault.
A useful next step
Keep the label or receipt as supporting evidence and obtain the complete model reference safely. Describe the actual symptom separately. This avoids asking a supplier to infer a component from an efficiency rating or marketing name.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.