Red x appears on Schlage lock and will not

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CO Reader Modules are not individually replaceable, nor can they be swapped between locks. The inside and outside assemblies of a CO lock are a matched/mated set and cannot be swapped to change rea...
PIM400-485 and AD400 Two red SCHLAGE LED flashes indicates the AD400, PIM400-485 and ACP all have operational communication, and the ACP denied access with a RS-485 command. With a PIM400-485 tw...
PIM400-TD2 and AD400 Two red flashes indicates the AD400, PIM400-TD2 has radio RF communication; but the AD400 did not get a strike, GO, relay closure from the ACP. With a PIM400-TD2 TWO red fla...
  ONE red flash, One red flash indicates RF COM loss, the AD400 radio did not get an answer from the PIM400-485 radio or the PIM400-TD2 radio. The PIM400-485 will turn off it's radio if th...
When trying to program a CM lock, it may display an error code with a solid green light and 10 read flashes. This indicates the lock has already been programmed with computer software and manual pr...
The 7500 mortise lock should be configured for NL function as shipped not as Classroom. See figure 4-3 in E996L instructions.