ABL EV charger displays E17; charging is blocked and the unit may indicate a current sensor error.

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

Open or shorted current transformer (CT) on ABL power board, Loose CT connector to main control board, Saturated CT due to wiring error, Faulty ADC input on main control board

How to Fix / Troubleshooting

Steps:

Power OFF the charger and open the housing.
Inspect CTs: Locate the current transformers around the phase conductors. Check for physical damage or dislodged cores.
Check connectors: Ensure the CT leads are firmly plugged into the main control board.
Verify wiring: Confirm that the phase conductors pass through the CTs as specified and are not doubled or misrouted.

Technician repair: Replace the defective CT assembly or the main control board if the ADC input is faulty. After replacement, perform calibration or verification as required by ABL.

Repair Difficulty

Hard 4/5

Required Part

ABL current transformer set

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