Repeated fault (6 times/10 minutes)

Hitachi Elevator Critical Elevator

Model: MCA | Code: 91

Applicable Systems
WJ200

Symptoms

Same fault repeated 6 times within 10 minutes

Possible Causes

  • Persistent intermittent fault
  • degrading component
  • loose connection
  • thermal issue

Troubleshooting Steps

  1. Step 1: Identify root cause from fault history
    Verify the fault is resolved after completing this step.
  2. Step 2: resolve underlying issue
    Verify the fault is resolved after completing this step.
  3. Step 3: check for loose connections
    Verify the fault is resolved after completing this step.

How to Reset

Power cycle; resolve root cause

Related Hitachi Fault Codes

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Category: Elevator