Dishwasher displays E13; may be linked to unusually high inlet water temperature.

Safety first: Disconnect power before internal checks.

• Check water supply temperature: Run the kitchen hot tap and measure the water temperature with a thermometer. Teka dishwashers typically require inlet water below about 60°C. If higher, adjust your boiler or connect the dishwasher to a cold supply.
• Reset and test: After adjusting water temperature, reset the dishwasher by unplugging for a few minutes, then run a test cycle.
• Sensor check: If E13 persists with correct inlet temperature, test the NTC temperature sensor as described for E6 and replace if faulty.