Applicable Systems
ThyssenKrupp Control System
Symptoms
Machine room inspection switch activated during operation - code 0A 20
Possible Causes
- Machine room inspection switch stuck or engaged
Troubleshooting Steps
- Step 1: Check machine room inspection switch
Verify the fault is resolved after completing this step. - Step 2: verify proper disengagement
Verify the fault is resolved after completing this step.
How to Reset
Disengage inspection switch; power cycle
Source: beijiaxin.cn; zhihu.com/p/577262471; renrendoc MC2-C manual
Category: Elevator