1. Confirm whether the power supply is connected correctly: check whether the massager is plugged in and connected with the ground wire. If there is a problem, solve the power connection problem.
2. Check the internal wiring of the massager: unplug the socket and check whether the massager is short-circuited or damaged. If there is any problem, you need to contact the manufacturer for maintenance.
3. Is the massager overloaded: If the massager is overloaded, E04 fault code may appear. At this time, it is necessary to remove the equipment to move the weight or redistribute the weight, so that the equipment will not be overloaded.
4. Check the status of the control panel: If the massager control panel falls off, is damaged or has poor contact, it may also lead to E04 fault code. At this time, it is necessary to contact the manufacturer or professional maintenance personnel to repair and replace the control panel.