Fan Modules - Cisco Firepower 4110 Hardware Installation Manual

Overview
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The following table describes the power module supply LEDs and their states.
Table 9: Power Supply Module LEDs
No power to all power supplies
Power supply module failure
Includes overvoltage, overcurrent, overtemperature,
and fan failure
Power supply module warning events
Power supply continues to operate.
With high temperature, high power, and slow fan
Power is present.
3.3 VSB on (power supply module off)
Power supply module is OK and on.

Fan Modules

The Firepower 4100 requires six fan modules, which are hot-swappable. They are installed in the rear of the
chassis. The system supports operation with a single fan failure (N+1 fan redundancy), but do not run the
system for an extended amount of time without all fan modules installed. Keep removal and replacement time
at three minutes. Remove and replace one fan module at a time.
If you remove a fan or a fan fails, the other fans operate at full speed, which can be noisy.
The fan modules are numbered left to right, for example, FAN1, FAN2, FAN3, FAN4, FAN5, and FAN6.
See Remove and Replace the Fan Module, on page 58
module.
The following figure shows the location of the fan LED.
Amber FAIL LED 2 Green OK LED
Amber LED (Fail
Status)
Off
On
1 Hz flashing
Off
Off
for the procedure for removing and replacing the fan
Cisco Firepower 4110, 4120, 4140, and 4150 Hardware Installation Guide
Fan Modules
Green LED (OK Status)
Off
Off
Off
1 Hz flashing
On
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