Scale can affect water-using laundry equipment, but symptoms such as poor draining, slow filling, heating problems or noise can have several causes.
Start with safe checks
Use the manufacturer-approved cleaning or descaling routine, inspect accessible filters and confirm the machine is installed and draining as intended.
Do not guess the failed part
A technician should confirm whether the issue involves a pump, valve, heater, sensor, seal, hose or control before parts are ordered.