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Rita HamptonNov 21, 2025
Why Dorma ED 100 Door Opening System does not open automatically?
- WWilliam OwensNov 21, 2025
If your Dorma Door Opening System door can only be passed manually or doesn't open automatically after an opening pulse, here's what to check: * If the green LED isn't lit, there's a power supply problem. Ensure the mains switch is on, test and restore the power supply if needed, or replace the mains adapter if 24 V DC isn't available. * If the LED flashes on the mains switch, the control unit found an error and emergency mode is active. Consult the "Information and error messages" list for troubleshooting. * The program switch might be in the Off or Exit only position. Switch it to the Automatic or Permanent Open position. * A signal from the safety sensor on the hinge side might be preventing opening. The signals of the safety sensors will be displayed for the diagnosis directl...
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