Porsche
Dynamic Load Management Malfunction
Porsche EV home charger does not limit current according to dynamic load management; household main breaker is at risk of 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
Incorrect configuration of Porsche energy manager or external meter, Faulty current transformer on main supply feeding load management system, Communication failure between wallbox and energy manager, Firmware bug in load management algorithm
How to Fix / Troubleshooting
Safety first: Overloading the main supply can cause dangerous overheating. Reduce charging current immediately.
- Manually reduce current: In the wallbox settings, lower the maximum charging current to a safe level until load management is verified.
- Verify meter readings: Check that the external energy meter or Porsche energy manager is reporting correct household consumption.
- Check communication status: In the wallbox interface, confirm that it shows an active connection to the load management device.
- Technician system test: A technician should verify CT installation direction and wiring, confirm Modbus or proprietary communication parameters, and update firmware on all components.
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Repair Difficulty
Hard
4/5
Required Part
External Porsche energy manager / current transformers
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