Service modes can alter settings or run components outside ordinary user operation. Instructions for a similar model may not apply to your dryer.
Understanding this situation
A diagnostic-looking display does not make live internal testing safe for a customer. Clearing stored information can also remove evidence useful to an engineer without fixing the condition.
A useful next step
Use the manufacturer's documented owner guidance only. Provide the full model, normal error and symptom to the service team. Do not bridge switches, change hidden calibration or operate with covers removed to follow an unofficial test sequence.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.