Short circuit detected during pre-charge sequence. BMS ALM LED flashes red. Safety shutdown.
Common causes
Short circuit in DC wiring from battery to inverterInternal inverter DC input faultDamaged battery output cable
What to check
STEP 1
STOP. Do not re-energise. Inspect all DC wiring from battery to inverter for short circuits or damage. Check inverter HV DC input terminals for contamination or short
STEP 2
Only re-energise after confirming no short circuit is present. Use a multimeter to confirm insulation between + and - before reconnecting
Escalate if
Any confirmed short circuit — do not reconnect until wiring is replaced. If wiring is confirmed fault-free and fault persists, escalate — internal battery or inverter fault
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