Applicable Systems
WJ200

Symptoms

Inverter IGBT (insulated gate bipolar transistor) fault detected

Possible Causes

  • IGBT short circuit
  • IGBT over-current
  • gate driver fault
  • IGBT thermal failure

Troubleshooting Steps

  1. Step 1: Check IGBT for short
    Verify the fault is resolved after completing this step.
  2. Step 2: inspect gate driver
    Verify the fault is resolved after completing this step.
  3. Step 3: verify cooling
    Verify the fault is resolved after completing this step.
  4. Step 4: replace IGBT module if faulty
    Verify the fault is resolved after completing this step.

How to Reset

Power cycle; replace IGBT if needed

Related Hitachi Fault Codes

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Source: jxrunrui.cn/zhishi/1498.html; jingyan.baidu.com/article/a378c9...

Category: Elevator

Published: 2026-11-03