Applicable Systems
WJ200
Symptoms
50B relay failed to energize properly
Possible Causes
- 50B relay coil failure
- relay contact degradation
- control circuit fault
Troubleshooting Steps
- Step 1: Check 50B relay coil resistance
Verify the fault is resolved after completing this step. - Step 2: inspect contacts
Verify the fault is resolved after completing this step. - Step 3: verify control circuit
Verify the fault is resolved after completing this step. - Step 4: replace relay if faulty
Verify the fault is resolved after completing this step.
How to Reset
Power cycle; replace relay if needed
Source: jxrunrui.cn/zhishi/1498.html; jingyan.baidu.com/article/a378c9...
Category: Elevator