Charger shows E24; display may indicate ‘Phase Imbalance’; charging may be reduced or stopped (three‑phase models).

Safety first: Turn off the main breaker. Only a qualified electrician should test three‑phase circuits.

• Verify supply phases: At the distribution board, confirm that all three phases feeding the Polestar charger are present and protected by appropriate breakers.
• Check internal terminals: Inside the charger, tighten all phase terminals in the input block and on the power module.
• Measure phase currents: With appropriate clamp meters and safety precautions, an electrician should measure current on each phase during charging. A missing or low current on one phase indicates a supply or power module fault.
• Component replacement: If the supply is good but one phase of the power module is not delivering current, replace the Polestar power module or associated current sensor.