It is the symptom of a problem one that could be a minor or major fix.
Air in pool pump after vacuuming.
Pool pumps leak in two ways.
Vacuuming your swimming pool is a great way to keep your pool clean and free of dirt and debris.
Water may leak out or air may be sucked in.
Removing air from a pool line involves priming the system with water to enable the pump to push the air out.
When air exists in the intake line and the pump chamber the pump cannot draw water.
Air leaks disrupt the vacuum force of the pump and result in inadequate circulation and filtration bubbling return jets.
Left unaddressed it will cause other problems as well and those problems could have minor or major impact.