Fan Tray Failure - HP FlexFabric 12900E series Installation Manual

Remove and reconnect the power cord to verify that the power cord is connected securely.
2.
Replace the power cord.
3.
Remove and reinstall the power supply to verify that it is installed securely.
4.
For more information, see
Verify that the power source is supplying power at the acceptable voltage range.
5.
Verify that the total maximum output power of all power supplies exceeds the system power
6.
consumption.
Verify that the power supply does not have problems such as output short-circuit, output
7.
over-current, output over-voltage, input under-voltage, or over-temperature.
Install the power supply in another empty power supply slot. If the power supply operates
8.
correctly, the previous power supply slot is faulty. If the power supply does not operate correctly,
go to the next step.
Install a correctly operating power supply of the same model in the same slot, and connect it to
9.
the same power source. If the new power supply can operate correctly, the old power supply
has failed. Contact your sales agent or local service engineer to replace the old power supply.
10. If the problem persists, contact Hewlett Packard Enterprise Support.

Fan tray failure

Symptom
The LEDs for the fan tray are in the following states:
•
On the MPU, the fan tray OK LED is off and the FAIL LED is on.
•
On the fan tray, the OK LED is off and the FAIL LED is on.
Solution
CAUTION:
• For good heat dissipation, you must install fan trays in both FAN1 and FAN2 slots. When a fan
tray fails, do not remove it until the new fan tray is ready. The device can operate correctly if the
failed fan tray is still in position.
• The fan tray is hot swappable. Follow these guidelines when you hot swap a fan tray:
Ensure electricity safety.
Replace a fan tray only when the other fan tray is operating correctly.
To avoid power-off protection of the switch caused by high temperature, replace a fan tray within 3
minutes.
• Do not power on a switch that does not have any fan trays installed.
To resolve the problem:
If both LEDs are off, verify that the power supplies are operating correctly. For more information,
1.
see "Power supply
Execute the display fan command in any view to display the operating state of the fan tray and
2.
rectify the fault:
Whether the fan tray is present.
Airflow direction of the fan.
Number of fans in the fan tray.
Operating status of each fan.
Fan speed.
Verify that the air inlet and exhaust vents of the chassis are not blocked. If they are blocked,
3.
clean them to keep good ventilation.
"Installing FRUs."
failure."
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