Cadillac No AC Supply / Input Power Loss

Charger has no power at all; display is blank and no indicator lights are on.

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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

Tripped or faulty breaker in service panel, Loose or disconnected supply wires at charger terminal block, Open circuit in feeder cable, Internal surge protection device failure opening the circuit

How to Fix / Troubleshooting

Safety first: Do not remove the charger cover unless the breaker is OFF. High voltage is present at the input terminals.

Steps to try:

  • Check the breaker: Locate the dedicated double‑pole breaker labeled for the Cadillac EV Home Charger. If it is in the tripped or middle position, switch it fully OFF, then ON once. If it trips again immediately, stop and call an electrician.
  • Verify other loads: Confirm that other circuits in the home have power to rule out a wider outage.
  • Inspect externally: Look for damage to the conduit, junction box, or charger enclosure. Do not touch exposed wires.

When to call a technician: If the breaker will not stay on or the charger remains dead with the breaker on, a licensed electrician or EVSE technician must test the supply voltage, feeder cable, and internal surge protection and repair or replace components as needed.

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Repair Difficulty

Hard 4/5

Required Part

Cadillac EVSE Input Terminal Block / Internal Surge Protection Module
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