Andersen Repeated Contactor Pull‑In / Failed Start Sequence

Charger makes a clicking sound repeatedly every few seconds without starting a charge.

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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

Unstable pilot signal due to poor connection, EV repeatedly accepting and rejecting charge, Faulty contactor drive circuit, Loose internal wiring causing intermittent detection

How to Fix / Troubleshooting

Safety first: Repeated contactor operation can wear components. If the clicking continues, stop using the charger and turn it off at the consumer unit.

User steps:

  • Unplug the EV and see if the clicking stops; if it does, the issue may be vehicle‑related.
  • Inspect and firmly reinsert the Type 2 plug.
  • Try another EV or cable if available.

If the charger clicks even with no vehicle connected, or with multiple vehicles:

  • A technician should test the pilot signal stability and inspect the main control PCB and contactor drive.
  • Replace the main control PCB or contactor assembly if they are found to be faulty.
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Repair Difficulty

Hard 4/5

Required Part

Main Control PCB / Output Contactor
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