Powerwall 3 Tesla Asset Controller (TACO) LED Issues

  • LED 1 (Power): Indicates whether TACO is powered
  • LED 2 (Status): Indicates current TACO status
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Note
After turning the Powerwall 3 switch ON, it may take up to five minutes for the LEDs to light. When the Power LED is green and the Status LED is light blue / aqua, Powerwall 3 is ready to commission.
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Note
During a firmware update, LED 2 may flash red. This is expected behavior, and the flashing will stop once the firmware update is complete.
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Note
The Tesla Asset Controller LEDs are not visible when the Powerwall 3 front cover is installed.
(1) Power LED (2) Status LED Status Details Corrective Action(s)
Solid green Solid light blue Ready to commission TACO is powered and the config application is running. TeslaPW network should be broadcasting N/A
Solid Green Solid Green Not ready to commission TACO is powered but the config application is not yet running
  • Power cycle Powerwall 3 as described below
  • If Powerwall 3 remains in this state permanently, contact Install Support
Solid Green Red Not ready to commission TACO is powered but the unit is still booting up
  • Power cycle Powerwall 3 as described below
  • If Powerwall 3 remains in this state permanently, contact Install Support
Solid Green OFF Not ready to commission TACO is powered but the unit is still booting up
  • Power cycle Powerwall 3 as described below
  • Take voltage measurements of the TACO low voltage harness as described below
  • If Powerwall 3 remains in this state permanently, contact Install Support
OFF OFF No power (12V) to TACO TACO is not powered. Note that power is only provided by internal 12V.
  • Confirm the TACO low voltage harness is plugged all the way in
  • Follow the instructions in Rapid Shutdown (RSD) E-Stop Test Failed to check for incorrect RSD wiring
  • Confirm the 12V wiring from Gateway 3 to Powerwall 3 is correct
  • If Powerwall 3 remains in this state, contact Install Support

Troubleshooting Sequences

Power cycle the Powerwall 3:
  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.

Using a multimeter, perform the following voltage measurements of the TACO low voltage harness while Powerwall 3 is switched ON:

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CAUTION
Ensure the multimeter testing leads are thin enough to fit the connector without damaging it; Tesla recommends using needle point testing leads.
  1. Disconnect the gray low voltage harness on the TACO.
  2. Measure 12V to GND. The expected voltage is 10 - 14.8V.
    Figure 1. Low Voltage Harness Connector
    Figure 2. Measuring 12V to GND on Low Voltage Harness Connector
  3. Measure CAN+ to GND. The expected voltage is 1.5 to 3.1V.
  4. Measure CAN- to GND. The expected voltage is 1.5 to 3.1V.
  5. If any of the measurements are not within the expected voltage range, contact Install Support.
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    Note
    Channel installers must complete a Channel Support Intake (Residential) Form before contacting Tesla Install Support.
For systems installed with Gateway:
  1. Confirm the Gateway is powered from the grid.
  2. Confirm the communication wiring between Powerwall 3 and the Gateway has been connected correctly and is not damaged.
For systems installed with Backup Switch:
  1. Confirm the Powerwall 3 breaker has not tripped.
  2. If the breaker has tripped, contact Tesla Support to identify the source of the trip before proceeding.