The appliance may need to remove moisture during drying as well as empty wash water. A changed drying result can therefore involve more than the heating stage alone.
Understanding this situation
This does not identify the drainage system as faulty, but it makes the timing of warnings, sounds and remaining water useful. Separate what happened during the wash from what appeared after drying began.
A useful next step
Describe whether ordinary washing and final water removal completed and whether any warning arrived later. Do not disconnect waste hoses or run repeated drying cycles through an unexplained drainage issue. Keep any leak or electrical symptom as an immediate stop-use concern.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.