Dishwasher shows E13; may be associated with unusually high inlet water temperature or heating control issues.

Safety first: Turn off the water supply and unplug the dishwasher.

• Check water connection: Verify whether the dishwasher is connected to a hot or cold water line. Mora dishwashers are typically designed for cold or moderately warm water, not very hot water.
• Measure inlet temperature: Run the tap feeding the dishwasher and measure the water temperature. It should generally be below 60°C unless the manual states otherwise.
• Adjust boiler or heater: If the water is too hot, lower the temperature setting on your boiler or water heater.
• Inspect NTC sensor: If inlet temperature is normal, test the NTC sensor as described for E11. Replace if readings are abnormal.
• Test cycle: After adjustments, run a cycle to see if E13 clears. Persistent errors may indicate a control board issue.