Hyundai E09 fault code meaning

Series: J300

E09 (Under. V)

AC drive

Meaning: Defective power supply (insufficient voltage). Check: voltage lowered; MCB or Mg poor contact; instantaneous power outages within 100 ms occurred in 10 minutes.

Possible causes

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Series: N50

Under-voltage protection

AC drive

Meaning: When input voltage drops below the low-voltage detection level, the control circuit does not function normally. So when the input voltage is below the specification, the inverter output is cut off.

Possible causes

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