Chexit stays locked, but no alarm

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Question
Answer
There is potential for ND40/ND44's manufactured around March 2011 to remain locked after egress, or after the latch is depressed.  There was an issue with the keycam that created a bind when l...
The following could cause the Chexit device shipped prior to 8-24-2015 with solenoid driven to go into weak alarm with solid LED light: Wrong power supply- Chexit device requires  a...
For Motor driven Chexit devices shipped from the factory after 8-24-2015, the Chexit Secure Relay Contacts( white and violet wires) change state to signal the device is not secure. Check the f...
For Solenoid driven Chexit devices shipped from the factory prior to 8-24-2015, the following could cause the device not to provide delay egress:Measure the voltage between green and orange wires o...
Followings could cause the Chexit device to go into alarm after the rearm time: Chexit devices shipped after 8-24-2015 with motor driven: Module DPS LED is ON DPS switch contact is open: Close t...
Chexit devices shipped prior to 8-24-2015 with solenoid driven: Chexit device has a RX switch with a connector that needs to be connected to the Chexit module otherwise the alarm will sound af...
If the Chexit device shipped prior to 8-24-2015  is not adjusted correctly ( Check vertical rod or Mortise finger) without using the door position switch and nuisance delay is&n...
 
Use a normally closed fire alarm as the input to the power supply option board (PS873-2 or PS914-2RS), this will hold the latch retracted.  During a fire alarm, the contact will open, dropping...