The Von Duprin 98 or 99 ALK kit will not sound the horn

Followings are the reason for 98/99 exit alarm ALK not sound when push bar is activated.

  1. Make sure key switch on exit alarm ALK is turned on, wait for 20 seconds before you activating the pushbar.  The alarm will not sound if the device is activated within 20 seconds of being turned on.
  2. Make sure push bar switch contact RX/LX is closing when the push bar is activated (use ohm meter to verify the switch activation).
  3. Make sure wires from RX or LX switch are connected to the exit alarm ALK terminal block. See attach instruction.
  4. Check the battery voltage, should read 9VDC.
  5. the ALK board may be not be working correctly.  Replace with part number 101030 if the items above did not resolve the problem. 

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