When the BW-700 displays error message E5, this often means that insufficient water is detected. In this case, check whether there is sufficient water in the bottle warmer.
Should this be the case, then it is also possible that the message is caused by limescale formation. In many cases this can be solved by cleaning the bottle warmer with vinegar (you can also leave the vinegar in overnight, this ensures that the vinegar can work properly).
If this does not help, the product can be sent for repair to www.service-hesdo.nl.
Should you have any additional questions, you can always contact us via this website.
Please state the complaint clearly so that we can help you.