Rapid Shutdown (RSD) E-Stop Test Failed

When performing the E-Stop test to confirm Rapid Shutdown (RSD) wiring is correct on a Powerwall 3, the test fails and RSD does not initiate.

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Note
For Powerwall 3 units on software version 24.4.2 or greater, failing the RSD Self Test five times in a row will result in RSD Self Test Lockout, causing the unit to go to sleep. If this has occurred:
  1. Disconnect the E-Stop button wiring and replace the Rapid Shutdown (RSD) jumper.
  2. Turn the Powerwall 3 switch OFF, wait 3 seconds, the turn the switch ON.
  3. Wait for the Powerwall 3 LED to blink red, then turn the Powerwall 3 switch OFF, wait 3 seconds, and turn the switch back ON.
This procedure should clear the RSD Self Test Lockout. Continue with the following troubleshooting steps.
  1. If a System Shutdown Switch is installed, confirm the Emergency Stop (E-Stop) button is in the engaged (pushed in) position.
  2. Disconnect the E-Stop button wiring and replace the Rapid Shutdown (RSD) jumper. Turn the Powerwall 3 Enable switch OFF.
    Figure 1. Powerwall 3 RSD Jumper
  3. If turning the Enable switch off DOES initiate RSD, reconnect the E-Stop button wiring and inspect the following:
    1. Confirm the RSD jumper has been removed and the E-Stop button is connected to the RSD IN / RSD Out ports.
      Informational PurposesAn informational icon, calling your attention
      Note
      The Powerwall 3 RSD connector has (3) terminals. Ensure the wires are connected to the (2) outermost terminals on the connector. The middle terminal is not used.
    2. Confirm the RSD connector is not damaged; if the connector is broken or compromised and cannot be fixed, contact Install Support.
    3. Confirm the wires are free of damage and the lines present proper continuity. If any damaged wiring is found, replace it.
    4. Confirm the wires have been stripped sufficiently to make contact with the connector.
    5. Confirm the wires are securely terminated and all terminals have been torqued correctly.
    6. Confirm the terminal block is seated correctly on the E-Stop DIN rail.
    7. Perform a continuity test on the RSD wires at the Powerwall 3; the tester should ring when touching the RSD wires, and should stop ringing when the E-Stop is engaged.
    8. If there are multiple Powerwall 3 units, confirm each unit is connected to a dedicated electrical contact of the E-Stop.
      Figure 2. Good Wiring Example: Each Unit Connected to Electrical Contact in E-Stop
      Figure 3. Bad Wiring Example: Both Powerwall 3 Connected to a Single Electrical Contact
      Figure 4. Bad Wiring Example: Powerwall 3 Units Connected to E-Stop in Series (Does Not Work)
      Figure 5. Bad Wiring Example: Second Powerwall 3 Not Connected to E-Stop
  4. If turning the Enable switch off DOES NOT initiate RSD:
    1. Power cycle the unit:
      1. Turn the Powerwall 3 switch on the left side of the unit OFF.
      2. Turn the Powerwall 3 breaker OFF.
      3. Disconnect the Tesla Asset Controller (TACO) low voltage harness, wait 30 seconds, then reconnect it.
      4. Turn the Powerwall 3 breaker ON.
      5. Turn the Powerwall 3 switch ON.
    2. If RSD still fails to initiate, contact Tesla Install Support.