Applicable Systems
ThyssenKrupp Control System

Symptoms

Elevator failed to start within 4-minute timeout window

Possible Causes

  • Drive system not ready
  • safety chain interruption
  • brake not releasing
  • inverter fault

Troubleshooting Steps

  1. Step 1: Check drive readiness signal
    Verify the fault is resolved after completing this step.
  2. Step 2: inspect safety chain
    Verify the fault is resolved after completing this step.
  3. Step 3: verify brake release
    Verify the fault is resolved after completing this step.
  4. Step 4: check inverter status
    Verify the fault is resolved after completing this step.

How to Reset

Power cycle; manual reset

Related ThyssenKrupp Fault Codes

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Source: beijiaxin.cn; zhihu.com/p/577262471; renrendoc MC2-C manual

Category: Elevator

Published: 2026-09-29