If the E27 error code appears on the appliance display it means that there is insufficient voltage in the electrical network and that the mains voltage is usually below 170V. As this is not an appliance fault, we recommend contacting an electrician to help you resolve the issue.
If you have any additional questions or concerns, please don't hesitate to contact our customer care team at +65 6751 5000. We're here to assist you with delight.