Installation & Safety Guide
13
Checking LEDs
The following tables outline how the switch and expansion modules report faults
and operational activities. Expansion modules are optional and can be purchased
separately.
Use the Mode Select button to toggle the Mode LEDs to the desired state.
Toggling the Mode Selection button does not affect the normal operations of the
switch.
System LEDs
LED
State
Description
FAULT
Off
Switch operation is normal.
Red
The switch or management software is
malfunctioning.
1 flash
A switch fan has failed.
3 flashes
The main PSU has failed and the RPS is now
providing power.
4 flashes
The RPS Monitor is set to ON, and the RPS
is not functioning, either because it has failed
or has been switched off.
5 flashes
The RPS Monitor is set to ON, but the RPS
is not connected.
7 flashes
For the AT-8624T/2M and AT-8624PoE
switches: An expansion module has been
inserted or removed while the switch is
powered on.
MASTER
Off
This LED is not supported.
RPS
Green
An optional redundant power supply is
connected to the switch.
Off
There is no optional redundant power
supply connected to the switch.
PWR
Green
The switch is receiving power and the
voltage is within the acceptable range.
Off
The switch is not receiving power.
