With the alarm door and the restaurant door closed, do you have any lights lit on the front of the box? - None -yesno Insert your key into the keyswitch and turn the key to the right and hold. Are you able to get a green light? - None -yes but it is slowno, but the zero stops flashingno Open the alarm box. Take the wires attached to the brass tabs on the back of the switch and jump them together using a metal paper clip or piece of wire. Does the green light come on? - None -yesno Remove 6 pin clip in the upper left corner of the circuit board. Jump the 3rd and 4th pin. Do you get a green light? - None -yesno If your alarm has no LED lights and no flashing "0" then the unit is not getting power from the power supply. Locate where the unit is plugged in and make sure: The outlet is working (plug something else in to the outlet, check breakers and GFI). The power supply is working. The wire to the unit has not been cut. The wires to the unit are hooked to the 1st and 2nd wire harness screws on the left. You need a new circuit board. You need a new keyswitch. Please call tech support at 800-45-ALARM. You may have a bad wire connection and will need to send the unit in. ‹ Operations Guide Video up My alarm is not making noise. ›