FLO
Short Circuit or Severe Overcurrent on Start
Charger trips the house breaker immediately when a charging session starts.
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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
Shorted output cable or connector, Internal short on power board, Incorrect breaker size or type, Vehicle drawing inrush current beyond circuit capacity
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset a breaker that trips instantly; this indicates a serious fault.
- Visual inspection: With power OFF, inspect the cable and connector for visible damage, burn marks, or melted plastic.
- Test with another EV (if safe): If possible, test with a different vehicle once. If the breaker still trips, the fault is likely in the charger.
- Verify breaker rating: Have an electrician confirm the breaker size and type match FLO’s installation requirements.
- Technician diagnostics: A technician should test for shorts between line and ground at the charger’s output and inspect the power board and main power contactor for damage.
- Replace damaged components: Replace the J1772 cable and handle assembly, power board, or contactor as indicated by test results.
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Repair Difficulty
Professional Required
5/5
Required Part
Power Board Assembly
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