Applicable Systems
Schindler Control System
Symptoms
ISK (safety relay) opened during door pre-opening
Possible Causes
- ISK relay opened unexpectedly during pre-opening sequence
- relay fault
- timing issue
Troubleshooting Steps
- Step 1: Check ISK relay
Verify the fault is resolved after completing this step. - Step 2: verify pre-opening sequence timing
Verify the fault is resolved after completing this step. - Step 3: inspect relay contacts
Verify the fault is resolved after completing this step.
How to Reset
Power cycle after relay check
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Source: book118 Bionic 3300 diagnostic manual; diantijob.com/175389.html
Category: Elevator
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