ABL Nuisance Tripping / Upstream Protection Trip

ABL charger trips the upstream RCD or breaker as soon as charging starts, but no specific error code is shown on the charger.

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.

Possible Causes

Upstream RCD not compatible with EV chargers (e.g., Type AC instead of Type A or B), Combined leakage from multiple circuits, Inrush current exceeding breaker characteristics, Internal leakage or fault in ABL charger

How to Fix / Troubleshooting

Steps:

Confirm that the upstream RCD type meets ABL and EV charging requirements (typically Type A with DC detection in charger, or Type B).
Test the charger on a dedicated circuit if currently shared with other loads.
Have an electrician measure leakage currents and verify breaker characteristics (C or D curve as recommended).
If trips occur even with correct protection and dedicated circuit, internal leakage or fault must be investigated by a technician.

Repair Difficulty

Hard 4/5

Required Part

ABL RCD/RCM module

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