#40D OFF fault / #15B ON fault

Hitachi Elevator High Elevator

Model: MCA | Code: 1A

Applicable Systems
WJ200

Symptoms

40D relay OFF fault; 15B relay ON fault

Possible Causes

  • 40D relay not releasing
  • 15B relay stuck energized
  • relay contact welding

Troubleshooting Steps

  1. Step 1: Check 40D relay
    Verify the fault is resolved after completing this step.
  2. Step 2: inspect 15B relay
    Verify the fault is resolved after completing this step.
  3. Step 3: verify relay control circuits
    Verify the fault is resolved after completing this step.
  4. Step 4: replace if welded
    Verify the fault is resolved after completing this step.

How to Reset

Power cycle; replace relay if needed

Related Hitachi Fault Codes

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Category: Elevator