Bug ID 587735: False alarm on LCD indicating bad fan

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2

Fixed In:
12.1.1

Opened: Apr 14, 2016
Severity: 3-Major

Symptoms

During some blade power ON conditions, a false alarm message is displayed on the LCD on the chassis bezel. This alarm indicates that several chassis fans are bad, however in reality the fans are not bad. Typically, the messages look like this: slot8/localhost emerg system_check[15535]: 010d0005:0: Chassis fan 2: status (0) is bad. slot8/localhost emerg system_check[15535]: 010d0005:0: Chassis fan 3: status (0) is bad. slot8/localhost emerg system_check[15535]: 010d0005:0: Chassis fan 4: status (0) is bad. slot8/localhost emerg system_check[15535]: 010d0005:0: Chassis fan 5: status (0) is bad.

Impact

No functional impact. The user may experience concern over the false alarms.

Conditions

Erroneous fan warnings may occur when a blade is inserted into a VIPRION 4800 chassis.

Workaround

Press green check button on the front of chassis bezel to clear the alarm.

Fix Information

None

Behavior Change