Error code E2 means that the motor cannot rotate the blades because they are blocked This can be due to very hard ingredients, for example too large an amount of ice cubes, which block the blender blade and thus the motor. To complete the blending process, first remove the mixing container and try to loosen the contents of the mixing container (caution: there is a risk of injury on the mixer blade) and reduce the amount of contents. Then replace the container on the unit and continue the process.
Error codes E3 and E4 mean that the motor is overheating. Therefore, the motor stops automatically to prevent damage to the device. This can happen if the ventilation holes at the bottom of the mixer are blocked or the device is exposed to high loads for too long. The blender should now cool for at least an hour. If necessary, the amount of content in the mixing container should also be reduced. After that, the mixing process can be continued.