Troubleshooting The Enclosure Fan Modules - Dell PowerEdge C8000 Hardware Owner's Manual

7 If the system fails to start, see "Getting Help" on page 203.

Troubleshooting the Enclosure Fan Modules

CAUTION:
Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered
by your warranty. Read and follow the safety instructions that came with the
product.
NOTE:
The fan modules are hot-swappable. Remove and replace only one fan
module at a time in the server enclosure that is turned on. Operating the system
without all three fan modules for extended periods of time can cause the system to
overheat. Review the following table before you begin to replace the fan modules.
Table 4-1. Fan Module Thermal Behavior Per Sled
Fan Module BMC (Processor/Memory)/Server Enclosure Temperature Status
Status
OK/OK
Fan module PID,
normal/OK
Chassis ambient
curve A,
Exhaust
temperature
control curve A
One fan PID,
module fails
Chassis ambient
curve C,
Exhaust
temperature
control curve B
OK/Fail Fail/OK
PID, Chassis ambient
curve B,
80% PWM
Exhaust
temperature
control curve A
100% PWM 100% PWM
Exhaust
temperature
control curve B
Fail/Fail
100% PWM
100% PWM
System
throttling
Troubleshooting
183