It may concern the warning system's power rather than the pump's immediate operation. Both issues still need the response specified for the model.
What the observation means
A weak alarm battery can reduce warning capability, so it should not simply be ignored because drainage seems normal. Owner battery replacement may or may not be provided.
A useful next step
Follow the alarm manual and use the specified part where permitted. Do not open a sealed control box or disconnect warning equipment. Record any separate high-level or pump message so the two concerns are not confused.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.