Applicable Systems
ThyssenKrupp Control System
Symptoms
Main contactor check fault - code 4F 00
Possible Causes
- Main contactor not responding correctly
- contactor welded
- auxiliary contact fault
Troubleshooting Steps
- Step 1: Check main contactor
Verify the fault is resolved after completing this step. - Step 2: inspect auxiliary contacts
Verify the fault is resolved after completing this step. - Step 3: replace contactor if welded
Verify the fault is resolved after completing this step.
How to Reset
Power cycle; replace contactor if needed
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Source: beijiaxin.cn; zhihu.com/p/577262471; renrendoc MC2-C manual
Category: Elevator
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