SCLB3 board communication fault / load detection circuit abnormal

Hitachi Elevator High Elevator

Model: MCA | Code: 90

Applicable Systems
WJ200

Symptoms

SCLB3 board communication fault; load detection circuit abnormal

Possible Causes

  • SCLB3 board communication lost
  • load detection sensor fault
  • CAN bus fault
  • SCLB3 hardware failure

Troubleshooting Steps

  1. Step 1: Check SCLB3 board
    Verify the fault is resolved after completing this step.
  2. Step 2: verify CAN bus communication
    Verify the fault is resolved after completing this step.
  3. Step 3: inspect load detection sensor
    Verify the fault is resolved after completing this step.
  4. Step 4: replace board if faulty
    Verify the fault is resolved after completing this step.

How to Reset

Power cycle; replace board if persistent

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

Category: Elevator