E03
Electrify Home
Overcurrent / Output Overload Fault
Display shows E03 and charging stops shortly after starting.
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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
Incorrect current setting on Electrify Home configuration, Shorted output contactor, Internal current sensor failure on main control board, Vehicle requesting current above charger rating
How to Fix / Troubleshooting
Safety first: Turn off the EV charger breaker before opening the unit. High current circuits are present.
- Step 1 – Verify circuit breaker size: Confirm the dedicated breaker matches the charger rating (for example, 40 A breaker for a 32 A charger). An undersized breaker can trip and cause related faults.
- Step 2 – Check charger current setting: If your "Electrify Home" model has a DIP switch or app‑based current limit, verify it is set correctly for the supply circuit. Reduce the maximum current setting and test again.
- Step 3 – Test with another vehicle: If possible, connect a different EV. If E03 only occurs with one vehicle, the vehicle’s onboard charger may be drawing irregular current.
- Step 4 – Inspect internal wiring (advanced): With power OFF and cover removed, inspect the output contactor and wiring for signs of overheating, melted insulation, or loose lugs. Tighten any loose terminal screws to manufacturer torque specs.
- Step 5 – Reset and monitor: Restore power and start a charge session while monitoring the display. If E03 recurs immediately, the current sensor or contactor may be defective and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Output Contactor Assembly
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