Run command input buffer ON fault

Hitachi Elevator Medium Elevator

Model: MCA | Code: 46

Applicable Systems
WJ200

Symptoms

Running command input buffer stuck ON

Possible Causes

  • Input buffer IC fault
  • run command signal stuck
  • buffer IC failure

Troubleshooting Steps

  1. Step 1: Check input buffer IC
    Verify the fault is resolved after completing this step.
  2. Step 2: verify run command signal
    Verify the fault is resolved after completing this step.
  3. Step 3: inspect buffer circuit
    Verify the fault is resolved after completing this step.

How to Reset

Power cycle after IC check

Related Hitachi Fault Codes

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Category: Elevator