User guide

75
MEM and ERR blinking
If both the MEM and ERR LEDs are
blinking, the ISY is unable to communicate
with your Ethernet network. Please check
all cable connections, try rebooting your
router or switch, and ensure that you have
a DHCP server available.
There are also 2 LEDs on the rear of the ISY where the Ethernet cable attaches. One
LED indicates a good network connection (should be on solid) while the other should
flash with network activity.