The keycam may have failed, example here, the latest design keycam can be easily identified as the colored changed to black.
Replace either the keycam or chassis as needed...
This could also happen if the tailpiece isn't installed in a KIL, FSIC, or SFIC cylinder. The FSIC driver also could have come loose from the core in the spindle.
To order Von Duprin exit device reference the "Additional information/How to order" section in the Von Duprin catalogs. All Von Duprin device series Catalogs are available on website.
The ND85/AL85/A85 hotel lock is only available in a conventional Key-in-Lever cylinder. Interchangeable core and Primus are not available with this function.
A Primus Hotel cylinder (as well as an IC hotel cylinder) is not possible because there isn't enough room inside the cylinder for all of the required components.
ND-series locks manufactured on or after January 30, 2017 use a different levers for cylinders and push/push-to-turn buttons.03-230 - Closed03-231 - Privacy & Cylinder- Schlage KIL (P,L)03-232 ...
ND -series locks manufactured on or after January 30, 2017 use the following spring cages:Outside - N523-218 - For ALL cylinder options except for JD-YA6, JD-YA7 and JD-MEDInside - N523-222 -...
ND-series locks manufactured before January 30, 2017 used the following spring cages:
ND-Series Cylinder Reference Table
Function
Door Thickness
Cylinder Mechanism
Complete Cylinder
Non-Hotel Functions
Standard
Conventional
23-065
Primus
20-765
Pri...