Listen for a change
New grinding, rattling, or persistent humming deserves attention. Record the sound from a safe distance and note when it occurs.
Watch the water movement
Unusual air in the basket, weak returns, and unexpected pressure changes can have several causes. A service assessment helps narrow them down.
Leave electrical work to a professional
Do not open electrical panels or operate visibly damaged equipment. Keep people away from suspect equipment and arrange an assessment by an appropriately qualified professional.