Safety circuit not opening when door opens

Schindler Elevator Medium Elevator

Model: Bionic/3300 | Code: 0020

Applicable Systems
Schindler Control System

Symptoms

Safety circuit did not open when door opened as expected

Possible Causes

  • Safety circuit contact stuck closed
  • door safety relay fault
  • timing parameter issue (CF03PA13)

Troubleshooting Steps

  1. Step 1: Check safety circuit contacts
    Verify the fault is resolved after completing this step.
  2. Step 2: inspect door safety relay
    Verify the fault is resolved after completing this step.
  3. Step 3: verify door close-to-safety-circuit delay parameter
    Verify the fault is resolved after completing this step.

How to Reset

Power cycle after parameter adjustment

Source: book118 Bionic 3300 diagnostic manual; diantijob.com/175389.html

Category: Elevator