Locate a Faulty Fan Module

Language:

You must determine which fan module is faulty before you replace it.

Check to see if any System Service Required LEDs are lit or flashing.
See Interpreting Diagnostic LEDs.

In Oracle ILOM, check the health of the cooling system.
```
-> show /System/Cooling
 /System/Cooling
	Targets:
 	Properties:
 		health = OK
 		health_details = -
...
->
```
If the health_details property identifies a faulty fan module, replace it. See Remove a Fan Module.

Verify that a fan module is faulty.
If a fan module is faulty, you will see /SYS/MB/FMx under the Value heading where x is 0 to 4.

For example:
```
-> show faulty
Target              | Property               | Value
--------------------+------------------------+-------------------------------
/SP/faultmgmt/0     | fru                    | /SYS/MB/FM0
...
->
```
If a fan module is faulty, replace it. See Remove a Fan Module.

If a FRU value different from /SYS/MB/FMx is displayed, see Component Service Task Reference to identify which component is faulty.

Use the Oracle ILOM faultmgmt shell to identify the faulty component.
See Display Faults (faultmgmt Shell).

Check the Fault class and Description fields for more information.

If a fan module is faulty, replace it. See Remove a Fan Module.

Within the Oracle ILOM interface, verify the fan module speeds.
```
-> show /SYS/MB/FMx/Fy/TACH value
 /SYS/MB/FM0/F0/TACH
 Properties:
 value = 3100.000 RPM
->
```
where:
- x is the fan module, 0 (left fan module) to 4 (right fan module).
- y is the fan element, 0 (primary) or 1 (secondary).
If a fan module is faulty, replace it. See Remove a Fan Module.

If you are unable to determine if a fan module is faulty, seek further information.
See Detecting and Managing Faults.