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Lisa HicksAug 10, 2025
What to do if Homematic IP HmIP-DLD Door locks show 1x red lighting + long signal sound?
- AAngela WillisAug 11, 2025
If the Homematic IP Door locks show 1x red lighting accompanied by a long signal sound, it means that the system button was not pressed within 3 minutes during the teach-in process. To resolve this, restart the teach-in process, carefully following the instructions provided in the app. Make sure to confirm the teach-in process by pressing the system button as prompted.
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