Make sure the plug is inserted correctly, check that there is electrical current.
The LED on the button does not work, replace the button.
Verify that the green button indicating the presence of current is turned on. Check for the presence of electrical current. Contact a service centre or the manufacturer.
WARNING! This may damage the product and is to be avoided in all cases. In the event that this happens, press the START button to restore the system to the beginning of the cycle and remove the cap from the bottle.
It may occur that some plastic bottles become deformed in such a way that closure becomes impossible. Press and hold the door manually and press the START button to restore the system to the beginning of the cycle.