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6.11 Checking 13V to Signal GND at the INV

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Written by Ollie Wells

Symptoms:

  • The Inverter has 240VAC at the INV AC terminals but there are no HC LEDs and/or there is no LUNAR_SIE... Wi-Fi network being broadcast.

How to measure 13V to GND at INV LV terminals:

  • With the BRG comms cable disconnected at the INV LV terminals, use a DMM to measure VDC between the SIGNAL GND and 13V terminals.

  • The reading should be 12/13VDC.

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