Describe the difference
Longer running, noisy starts and water backing up are separate changes. Explain which fixture is connected and when the symptom begins.
Avoid false fault assumptions
An engineer can consider the model's intended fixture arrangement. A running sound during drainage is not itself evidence of failure; the timing and clearing result determine whether repair assessment is needed.
A useful distinction
If basin use has always started the pump and clearing remains normal, there may be no new fault to repair. The enquiry should identify a change in duration, sound, leakage or result rather than ordinary operation alone.