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White film inside

White film on inside surface — Mineral deposits or salt residue

Teka · Dishwashers

What does White film inside mean?

A white film or residue appears on the inside surfaces of the Dishwasher. This often indicates the presence of hard water minerals or traces of Dishwasher salt that have entered the wash cycle.

Common Causes

  • Hard water minerals accumulating on surfaces
  • Traces of Dishwasher salt have gotten into the wash cycle because a program was not run after adding salt
  • Loose lid on the salt dispenser

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    To clean the interior, use a damp sponge with Dishwasher detergent and wear rubber gloves.

  2. 2

    Always run a quick wash program without any crockery after adding Dishwasher salt to clear any residue.

  3. 3

    Check the lid of the salt dispenser to ensure it is properly fixed and sealed.

  4. 4

    Consider adjusting your water softener settings if hard water minerals are the cause.

Browse all codes in this manual (39)
Verified technical data. Last updated: April 2026

Related Faults

10 beeps every 30s10 beeps every thirty seconds — Dishwasher door opened during cycleBlack or gray marks on dishesBlack or gray marks on dishes — Aluminum rubbingBuzzer 8 secondsBuzzer sounds for 8 seconds — Wash cycle finished
Source: Teka Dishwashers
Open Manual (Page 27)Search more codes in this manual