When a residential electric vehicle (EV) charging station displays a flashing red indicator light, it is signaling a critical error fault code, safety protection trip, or hardware malfunction that has halted power delivery to protect your vehicle and home. Common causes include a ground fault interruption, input voltage irregularities from the electrical grid, a thermal overload protection shutdown from overheating, or a stuck contactor relay. You can troubleshoot EV charger errors safely by standing on a dry floor. You can verify that your corrective action is successful when power-cycling the charging unit by flipping off the dedicated circuit breaker in your home electrical panel for one minute and switching it back on clears the fault code and returns the LED indicator to a steady green or blue ready state.
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