why does deadbolt not retract fully

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After rotating  the key to unlock the lock, you must return the key to its normal position to remove it. 
- AD Series and CO series products require that the Night Latch (NL) screw is installed in the exit device.  Be sure this screw is installed- Exit hardware and strike must be properly mounted ...
Bad dogging hook on the dogging assembly could cause the 33A/35A and 98/99 exit device latch bolt not to retract completely.
The L9466 Store/Utility Room lock can provide this functionality. Operation: Latchbolt retracted by knob/lever either side. Deadbolt thrown or retracted by key from either side. When the deadbolt ...
After installing a classroom deadbolt, there is potential for the thumbturn to project the bolt only, get stuck in one position, or move both directions but not move the bolt.  These are caused fro...
If the 912L was shipped after February 28,  2011, Check the installation instructions, step 3 to be sure all parts are installed on the trim correctly, even if the trim was received in th...
Latch retraction issues at time of installation could be caused by incorrect handing of the lock chassis.  Move the driver to one of the following positions as indicated below: