The word CHECK on the keypad's display, accompanied by a beeping at the keypad, indicated a trouble condition in the system. To silence the beeping for these conditions, press any key.
- A display of CHECK and one or more zone numbers indicates that a problem exists with the displayed zone(s) and requires your attention. Determine if the zone(s) displayed are intact and make them so if they are not. If the problem has been corrected, the display can be cleared if you enter the OFF sequence (security code plus OFF key) twice. If the display persists, call for service. NOTE: A display of CHECK 70 on Alpha Display keypads indicates that the wiring connection to the external sounder is at fault (opened or shorted), and you should call for service. (See Bell Service below). A display of CHECK 90 indicates that RF interference may be impeding the operation of wireless sensors in the system. (See Rcvr Jam below)
- If there are wireless sensors in your system, the CHECK condition may also be caused by some change in the environment that prevents the wireless receiver from receiving messages from a particular sensor. Call for service if this occurs.
Words or letters in parentheses are those that are displayed on Fixed-Word Display keypads.