Polestar
Short Circuit or High Leakage on Start
Charger trips the house breaker or RCD 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 power module, Pinched internal wiring, Severe insulation breakdown in cable, Incorrectly rated or faulty breaker/RCD
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset a breaker that trips instantly. Turn it off and leave it off until the fault is found.
- Visual inspection: With power off, open the Polestar charger and look for obvious damage: burnt components, melted insulation, or foreign objects.
- Check cable: Inspect the entire length of the cable for cuts, crushing, or melted areas. Replace the cable if any damage is found.
- Isolate charger: Have an electrician disconnect the charger from the supply and test the circuit without the charger. If the breaker still trips, the issue is in the house wiring; if not, the charger is at fault.
- Component replacement: A shorted power module or internal wiring fault typically requires replacement of the Polestar power module or harness by a technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Polestar Power Module
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