E20 error: The unit reports low water quality or scale buildup, and may stop and request cleaning.

Safety first: Unplug the ice maker and close the water supply. Use only Teka-approved cleaning agents.

• Run a full cleaning cycle: Follow the user manual to run a complete cleaning and descaling cycle using the recommended solution. This often clears the error.
• Clean or replace filter: If your Teka ice maker has an internal or external water filter, replace it according to the schedule or sooner if heavily used.
• Inspect water quality sensor: Locate the sensor in the reservoir or water path. Clean its surface gently to remove scale. Check the wiring for damage.
• Consider water treatment: In areas with very hard water, install a softener or inline filter to reduce scale formation.
• Reset indicator: After cleaning, reset the water quality or cleaning indicator as described in the manual and verify that the error clears.