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How to Solve the Jamming Issue for Ultraloq U-Bolt Series?

Installation Errors probably lead to mechanical issues over time. This article provides troubleshooting steps that should resolve most jamming issues.

Troubleshooting Steps:

Note: Please do not insert the mechanical key during installation.

1. Please check the depth of the frame's hole. It must be more than 1''. For the Latch/Lever/Handle lock, the frame's hole is usually less than 1''. Please drill the hole to fit the deadbolt.

2. Deadbolt Installation:

Please ensure that the deadbolt is snugly fitted into the installation slot, and both installation screws are securely tightened.


If you can shake the installed deadbolt with your fingers, it indicates an installation issue. Please reinstall the deadbolt.


3. Exterior Assembly &Interior Assembly Installation:

​​​​​​When installing the exterior, please note that the two fixing screws should not be tightened one after the other. Doing so may cause the plate to be unevenly installed, increasing the likelihood of jams.

Incorrect installation method is as follows:


The correct installation method is to alternately and slowly screw in the two screws, ensuring both are securely tightened in the end.


When installing the interior, please ensure that the connecting wire is positioned slightly below, as this placement helps prevent wear and tear on the wire.


After completing the installation of all components, please try rotating the knob manually. Initially, you may encounter significant resistance when rotating to the extreme position. This is a normal phenomenon. Rotate it multiple times will make it better. 


Another possible solution for you is to find out how to adjust the deadbolt.

Related Problems:

1. The U-tec App shows the "Deadbolt is jammed" error.


2. The U-tec App is opposite to the actual direction. Deadbolt is unlocked, but the App shows "locked." 

3. The deadbolt can't move all the way. (Unable to fully retract or fully extend)

4. U-bolt repeat lock and unlock by itself, and drain the battery quickly.



If all attempts fail, please submit a trouble ticket here.

We would appreciate it if you could send us a short malfunctioning video when you submit the ticket. It will help us analyze the issue more quickly. If the video size is too big to upload, you can upload it to Google Drive and share the download link with us. We will offer a free replacement under warranty as soon as we confirm the issue.


Note: Please choose the correct Request category when you submit a ticket.

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