E10
J+ Booster
Internal Communication Bus Failure
Display shows E10; charger will not start and may indicate an internal communication error.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Loose internal harness between display module and main control board, Faulty display/control PCB, Firmware corruption on main control board, Electrical noise or surge damage to communication lines
How to Fix / Troubleshooting
Safety: Do not open the charger housing; internal components are not user-serviceable.
- Full power reset: Disconnect the J+ Booster from mains for at least 5 minutes to allow capacitors to discharge and internal modules to fully reset.
- Check for physical shock: If the unit was recently dropped or hit, internal connectors may have loosened. Do not attempt to reseat them yourself; note this for the technician.
- Verify supply quality: Avoid circuits with frequent surges or flickering lights. If possible, connect through a surge-protected circuit.
- Update firmware (if supported): If J+ Booster provides a user firmware update method (e.g., via app or USB), follow the manufacturer’s instructions to reload the latest firmware.
- Persistent E10: Indicates likely failure of the display/control PCB or main control board; professional replacement is required.
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Repair Difficulty
Professional Required
5/5
Required Part
J+ Booster Display / Control PCB
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