The lock cylinder of the anti theft door can t be locked inside and out, what is the reason? It is a

After loosening the lock cylinder, move the lock cylinder inward or outward slightly, usually the anti-lock function is to say that there is an anti-lock button in the room, and then you also try it in the open state, first of all, your lock is normal before you change the lock cylinder.

If it doesn't work, the new cylinder doesn't match the original cylinder model. Although the anti-lock deadbolt is in the same lock body as the large square tongue oblique tongue on the lock body, it is just a new key.

In addition, I will emphasize to you the "anti-lock" decision, it should be the lock cylinder is crooked, but the key unlocking and anti-lock are two independent mechanisms, the original function of the lock will not change, if it still can not be opened, the lock body will be through the rotation of the anti-lock button will come out of a small square tongue to add a safety to the door. That is, after internal anti-locking.

First of all, your lock is normal before you change the lock cylinder, and then you also try it when the door is opened, if it still can't be opened, it should be that the lock cylinder is crooked. After loosening the lock cylinder screw, move the lock cylinder inward or outward slightly, and then try it with the key, and then tighten the screw wire after trying.

If it doesn't work, the new cylinder doesn't match the original cylinder model.

In addition, I will emphasize to you the "anti-lock" decision, usually the anti-lock function is to say that there is an anti-lock button in the room, and the lock body will be rotated by the anti-lock button to add a small square tongue to the door plus a safe. Although the anti-lock deadbolt is in the same lock body as the large square tongue oblique tongue on the lock body, the key unlocking and anti-locking are two separate mechanisms. That is, after the internal anti-lock, the external key cannot be opened.

After changing the lock cylinder, the function of the original lock will not change, but it is just a new key.

Find a locksmith to put it, install the problem.