quick checks,
1. "failed to communicate" trying to send a test signal to the monitoring
or former monitoring company.
2. "low battery" unit has done a self test and found the battery failing and
is warning you..
3. "system error" unit has done a self test of attached data modules, ie..
keypad, expanders etc.. and one or more has failed to communicate
correctly.
4. there are no EOLR on zones and the system is trying to arm itself.
and on and on and on...