The six fan modules are located at the front of the chassis; you can access them without removing the server cover.
Caution - While the fan modules do provide some cooling redundancy, if a fan module fails, replace it as soon as possible to maintain server availability. When you remove one of the fans in the back row, you must replace it within 30 seconds to prevent overheating of the server.
Each fan module contains LEDs that are visible from the top of the server. Fan Module Status LEDs describes fan module LEDs and their functions.
Table 3-2 Fan Module Status LEDs
Fan Module Status LEDs shows the fan module LED status locations.
Figure 3-4 Fan Module Status LEDs
The following LEDs are lit when a fan module fault is detected:
Front and rear Service Action Required LEDs
Fan Module Service Action Required (TOP) LED on the front of the server
Fan Module Service Action Required LED on or adjacent to the faulty fan module
The system Overtemp LED might light if a fan fault causes an increase in system operating temperature.
Use the following procedures to remove and install fan modules from the server.
Refer to Removing a Fan Module when completing the following procedure.
Caution - If you remove one of the fans in the back row, replace it within 30 seconds to prevent overheating of the server.
Caution - Hazardous moving parts. Unless the power to the server is completely shut down, the only service permitted in the fan compartment is the replacement of the fan modules.
The Service Action Required LEDs are located on the fan module as shown in Fan Module Status LEDs.
Caution - When removing a fan module, do not rock it back and forth. Rocking the fans modules can cause damage to the fan board connectors.
Caution - When changing the fan modules, note that only the fan modules can be removed or replaced. Do not service any other components in the fan compartment unless the system is shut down and the power cords are removed.
Figure 3-5 Removing a Fan Module
Refer to Installing a Fan Module when completing the following procedure.
The fan modules are keyed to ensure that they are installed in the correct orientation.
Figure 3-6 Installing a Fan Module
Note - If you are replacing a fan module when the server is powered down, the LEDs might stay lit until power is restored to the server and the server can determine that the fan module is functioning properly.