You can't find the service manuals on crowns website, it is something you have to purchase separately unfortunately. The operators manual does not have any info on the features menu.
Here is the feature menu options:

F1: Language
F2: Units of measure (English or metric)
F3: User performance (allow user to switch from P1, P2, or P3)
F4: User login codes (sets login codes for different users, like a less advanced infolink system)
F5.1: Height speed limit on/off
F5.2: Gate Alarm on/off
F5.3: Gate travel on/off (requires the gate to be closed at height)
F5.4: Hand presence on/off
F5.5: Lift limits
F5.6: Sleep Delay (requires rekey once asleep
F5.7: Travel alarm activation
F5.8: Lift alarm activation
F5.9: Strobe light activation
F5.10: Tilt sensor on/off
F5.11: Power load tray on/off

Some of these features should be left enabled for safety and some components like a strobe light or power load tray may not be installed, if enabling any functions that are not installed on the lift it could throw a code. Please be careful when changing settings.