E18
NRGkick
External Control / Load Management Interface Fault
Charger indicates E18; often associated with load management or external control signal error (e.g., smart home or grid control input).
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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 wiring of external control input, Shorted or open control terminals, Incompatible external control voltage, Faulty interface circuit on control PCB
How to Fix / Troubleshooting
Safety first: External control lines may carry low voltage but can still be damaged by incorrect wiring.
- 1. Disconnect external control:
- If you have connected NRGkick to a smart home, PV system, or load management relay, disconnect those control wires or disable the integration.
- 2. Test standalone operation:
- Operate the charger without any external control connected.
- If E18 disappears, the issue lies in the external wiring or controller.
- 3. Verify wiring:
- Check that external control lines are connected according to NRGkick documentation (correct polarity, voltage level, and terminals).
- 4. If E18 persists with no external connections:
- The interface circuit on the control PCB may be shorted or open.
- Contact NRGkick support for diagnostics and repair.
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Repair Difficulty
Medium
3/5
Required Part
External Control Interface Circuit
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