E04
Andersen
Output Overcurrent Protection Trip
Charging stops with E04; app indicates 'Overcurrent / Output Overload'.
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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
Shorted Type 2 cable core, Internal contactor contacts welded or damaged, Faulty current sensor on main control PCB, EV requesting current above configured limit in Andersen settings
How to Fix / Troubleshooting
Safety first: Turn off the charger at the isolator/consumer unit before inspecting the cable or socket.
Steps:
- Check app settings: Open the Andersen app and verify the maximum charge current is correctly set for your supply (e.g. 32A on a 7kW single‑phase). Reset to default if unsure.
- Inspect the tethered cable: Look for crushed, cut, or melted sections along the Andersen tethered cable. If any damage is visible, stop using the charger immediately.
- Try another vehicle: If possible, test with a different EV to rule out a vehicle‑side fault drawing excessive current.
- Power cycle: Reset the charger by switching the breaker OFF for 60 seconds, then ON. Attempt a low‑current charge if your app allows limiting current.
If E04 returns immediately:
- The internal contactor or current sensing circuit may be faulty. These are not user‑serviceable.
- Contact a qualified EV technician to test the output contactor assembly and current transformers/shunts on the main control PCB.
Do not continue to reset and retry if the cable is hot or damaged; this risks fire.
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Repair Difficulty
Hard
4/5
Required Part
Output Contactor Assembly
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