If your Bottle & Breastmilk Warmer is showing an E5 error message - this means the machine has run out of water mid-cycle. Simply add cold water to the machine and let it sit and cool for about 5 minutes. Empty and refill the water chamber with the correct amount of water and restart the bottle warmer. This should clear the error message.
If your machine is showing a different error code, please contact our customer services team who will be able to help further.