HP Surestore Disk Array 12h - And FC60 Service Manual page 278

Table 37 Master Troubleshooting Controller Enclosure Master Troubleshooting Table (cont'd)
Symptom
Controller Fan Module
Fan Fault LED is on
No LEDs ON
Battery
Fault-A or Fault-B LED
(BBU) is on
Full Charge-A or Full
Charge-B LED (BBU) is
off
Controller Enclosure Troubleshooting
278
Possible Cause
One or both of the fans in
the controller fan module
has failed.
The power supply fan
module is unplugged or
has failed.
The temperature sensor in
the controller fan module
has detected an over
temperature condition.
Controller fan module is
unplugged or has failed.
Left or right battery bank
has failed.
Left or right battery bank is
not yet fully charged.
Procedure
Replace the controller fan module.
1. Make sure the power supply fan module
is plugged in correctly. Reseat the module
if necessary.
2. Check the LEDs on the power supply fan
module. If the Power LED is off or the Fan
Fault LED is on, replace the power supply
fan module.
If the Power LED is on and the Fan Fault
LED is off, the problem may be caused by
the controller fan module.
Even if the fans in the controller module are
operating, an obstructed air flow path or a
high ambient temperature can cause the
temperature within the enclosure to rise.
Determine what is causing the temperature
problem and correct it.
1. Make sure the controller fan module is
plugged in correctly. Reseat the module if
necessary.
2. If the Power LED remains off, replace the
controller power module.
Replace the BBU.
Turn ON the power and allow controller
module to run 7 hours to recharge the
batteries.
If after 7 hours, the battery low error
persists, replace the BBU.