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One (1) red blink

One red blink — Earth fault detected, charging disabled

Tesla Wall Connector · (Gen 3)

What does One (1) red blink mean?

A single red blink indicates an earth fault circuit interruption. This means there's an unsafe current path, and charging is disabled.

Common Causes

  • Damage to the handle, cable, or Wall Connector.
  • Signs of water ingress.
  • Issue with the power supply's earth connection.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the handle, cable, and Wall Connector for any damage.

  2. 2

    Check for signs of water entering the unit or cable.

  3. 3

    Ensure the power supply has been checked and confirmed as okay by an electrician.

  4. 4

    Contact Tesla Energy if the issue persists.

Browse all codes in this manual (49)
Verified technical data. Last updated: April 2026

Related Faults

1 red blinkOne red blink — Ground fault detected, charging disabled2 red blinksTwo red blinks — Ground assurance fault, high ground resistance detected3 red blinksThree red blinks — High temperature detected, charging limited or disabled
Source: Tesla Wall Connector (Gen 3)
Open Manual (Page 46)Search more codes in this manual