White film or limescale deposits on dishes and inside the tub.

Safety first: Allow the dishwasher to cool before handling internal components.

• Check rinse aid: Fill the dispenser and increase the setting one step at a time until spotting reduces.
• Refill salt: If your Zanussi model has a salt reservoir, fill it with dishwasher salt and adjust the softener setting according to local water hardness.
• Use proper detergent: Use high‑quality dishwasher tablets or powder designed for hard water.
• Descale: Run a descaling program or use a dishwasher descaler to remove existing limescale.