Any of the following conditions may cause the lock to malfunction or fail to operate entirely (e.g., jammed lock, hard to turn the knob, etc.)
- • The latch is not installed horizontally.
- • Strike box or strike plate is not installed properly.
- • Backset measurement is not set up properly.
- • Non-alkaline batteries are used.
- • The internal/external unit of the lock is not installed horizontally.
- • While the door is open, it is hard or not smooth when turning the lock knob.