C&K systems LED Keypad User Manual page 7

.
SERVICE Bell fuse failed
POWER,
ARM, and
SERVICE
ON
.
Normal state
OFF
FLASHING SLOW -
.
Watchdog reset
.
Zone is in trouble (when
accompanied by slow
flashing zone light)
FLASHING FAST -
.
Failed to communicate
FLASHING SLOW -
.
The POWER, ARM, and
SERVICE lights simultane-
ously flash (slowly) when
in the programming mode.
FLASHING
7