This article concerns:
- Smart Lock Go
- Smart Lock (4th Generation)
- Which Smart Lock do I have?
A 4A error indicates that the Smart Lock cannot turn its main motor. Here you can find some troubleshooting steps to resolve this issue:
- Install the latest Smart Lock firmware.
- Calibrate your Smart Lock.
- This should resolve your error. If not, please follow the further instructions in the Nuki App.