The E0 error code indicates that the voltage of the power outlet does not match the required operating voltage of the bottle warmer.
To resolve this issue, ensure that the voltage of the power outlet corresponds to the required operating voltage. You can try plugging the warmer into a different power outlet with the appropriate voltage to verify the result.
1. If you purchase the MW01 6-in-1 Fast Baby Bottle Warmer from our US store, the US version is engineered to operate normally with a 120V power supply in the United States.
2. If you buy this bottle warmer from our EU store, the EU version is engineered to function normally with a 220 - 240V power source in the EU countries.
If the issue persists, please don't hesitate to contact the Momcozy Customer Service Team at support@momcozy.com with the following information:
1. A picture of the error.
2. A screenshot of the order invoice with the order number.