E16
Emporia
Internal Self-Test / Watchdog Failure
Charger shows E16; app may indicate 'Internal fault' or 'Self-test failed'; unit will not start charging.
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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
Corrupted firmware, Control board hardware failure, Power supply instability on low-voltage rails, Memory error on microcontroller
How to Fix / Troubleshooting
Safety: Turn off power at the breaker before any disassembly.
- Power cycle: Turn the breaker off for at least 2 minutes, then back on to allow a full reboot.
- Check supply stability: Ensure the breaker and wiring are correct and that there are no frequent power dips or surges.
- Firmware update: If the charger will connect to the app, check for and apply any available firmware updates from Emporia.
- Factory reset: Perform a factory reset following the Emporia manual, then reconfigure the charger in the app.
- If E16 persists after reset and update: The control board is likely defective and should be replaced as a complete assembly by a qualified technician.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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