BCN Fan Failed, but still working?

[dsullinger]

We have 4 BCN Routers running 11.20 code. One of the fans on a single BCN had failed. Nortel sent us out a new fan tray to replace it. I hot swapped the blade out this morning and all the fans came up fine, but Site Manager still says "Fan: FAILED". At this point I rebooted the router to see if it would clear the event. Once the BCN rebooted, the fan showed NORMAL for about 10 seconds, the it showed FAILED again. I checked all the fans once more and they are all turning at what looks to be the same speed and working fine.

I put a call in to Nortel Support and they didn't know what to do to reset the event so it wouldn't show as FAILED.

Any ideas?

 

[netmanrick]

There is probably a greater voltage across one of the fans.
Did you power off the unit ?

Rick Harris
SC Dept of Motor Vehicles
Network Operations