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6.4 IPC (Inverter) Not Communicating

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Written by Ollie Wells

Symptoms:

  • The Inverter Process Controller (IPC) is not communicating.

  • Requirement: The IPC requires the inverter breaker to be ON to have power.

  • Potential Causes:

    1. A firmware update failure / stuck in bootloader.

    2. A hardware / electrical failure of the inverter.

    3. Physical damage to the home controller to inverter wire harness inside the inverter wiring enclosure.

Troubleshooting Steps:

  1. Check for recent firmware updates and try force_all updating the firmware.

  2. Measure 13V to GND at the INV LV terminals (see article 6.11 Checking 13V to Signal GND at the INV).

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