Dishwasher leaves a white film or spots on dishes and glassware.

Safety first: No internal electrical work is required for this issue.

• Step 1 – Check salt:
  • Open the salt compartment and ensure it is filled with dishwasher salt.
  • Top up if low, and wipe away any spilled salt from the tub.
• Step 2 – Water hardness setting:
  • Refer to your Siemens manual to set the correct water hardness level based on your local water supply.
• Step 3 – Rinse aid:
  • Ensure the rinse aid dispenser is filled, and adjust the dosage setting if spotting persists.
• Step 4 – Detergent:
  • Use a good-quality detergent and follow the recommended amount; too much can leave residue, while too little can cause poor cleaning.
• Step 5 – Descale:
  • If heavy limescale is present, run a descaling cycle with a Siemens-approved descaler.

After making adjustments, run a hot cycle with clean dishes to confirm that the white film no longer appears.