ABL Overheating of Connectors or Internal Wiring

ABL charger or cable becomes very hot to the touch during normal charging, even at rated current.

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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

Worn or contaminated Type 2 contacts, Loose terminal screws on power board, Undersized supply cable for configured current, Internal relay or contactor with high contact resistance

How to Fix / Troubleshooting

Warning: Overheating can lead to fire. Stop using the charger until inspected.

Steps:

  • Stop charging and allow the unit to cool.
  • Inspect the plug and socket for discoloration, melting, or burn marks. Replace damaged components immediately.
  • Have an electrician open the charger (power OFF) and re‑torque all power terminals to manufacturer specifications.
  • Verify that the supply cable size and breaker rating match the configured maximum current of the ABL charger; reduce current if necessary.

If overheating persists after tightening and verification, the contactor or socket module may need replacement.

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Repair Difficulty

Hard 4/5

Required Part

ABL Type 2 socket module
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