Lithionics error code Contactor State Fault
V9 status flag 'Aux Contact Error' (Contactor State Fault / AUX FAULT): the auxiliary contacts disagree with the commanded contactor state - possible tack-welded contacts from a current surge or inrush. The BMS first tries to unstick the contactor by pulsing the coil up to 10 times.
What to check, and in what order, is in the app. A step-by-step flow walks this code with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- User Manual - NeverDie Advanced BMS V9 (2024)Lithionics Battery
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