Zaptec
Current Limitation Due to Configuration or Pilot Signal
Vehicle charges only at a very low current (e.g., 6–8 A) even though higher current is configured and available
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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 maximum current setting in Zaptec app, Load balancing group limiting current, Faulty pilot signal duty cycle generation, Thermal derating
How to Fix / Troubleshooting
Safety first: Low current is not dangerous but may be inconvenient.
Steps:
- Check app settings: Verify the maximum current limit for the charger and any user profiles.
- Load balancing: If part of a group, check if the group controller is intentionally limiting current due to building load.
- Temperature: Ensure the charger is not overheating; if it is, improve ventilation and reduce ambient temperature.
- Technician checks: Measure the pilot signal duty cycle to confirm it matches the configured current. If not, the pilot driver on the main board may be faulty and require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board (Pilot Signal Driver)
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