Applicable Systems
ThyssenKrupp Control System
Symptoms
No valid floor position detected - code 19 NN
Possible Causes
- Position sensor failure
- floor learning not completed
- encoder signal loss
Troubleshooting Steps
- Step 1: Check position sensors
Verify the fault is resolved after completing this step. - Step 2: complete floor learning
Verify the fault is resolved after completing this step. - Step 3: verify encoder signal
Verify the fault is resolved after completing this step.
How to Reset
Power cycle; run floor learning
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Source: beijiaxin.cn; zhihu.com/p/577262471; renrendoc MC2-C manual
Category: Elevator
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