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Spurious router fan failures?

Hi gang.

C3745-ENTSERVICESK9-M version 12.4(10b). ROM version 12.2(8r)T2

This router appears to be generating spurious fan failure alarms. The fan assembly has been changed for a new one, the engineer checked and was satisfied that in a physical functional sense the replacement fan assembly was definitely working, but we now have all 4 fans showing as failed. We are being told that the replacement unit is believed to be part of a batch of faulty fan assemblies and that it was a known Cisco issue. ... Has anybody got any more information on this? *Is* it a known Cisco issue??

Hall of Fame Master

Spurious router fan failures?

3745 is quite an old model what went out of support

indipendetly from what the cause is, if you upgrade to a current model like an ISR G2 on which you can have a smartnet contract on it, to get guaranteed support, and peace of mind.

Spurious router fan failures?

Unfortunately the customer is a third party, not part of the same company as me, and will upgrade their network or not for their own reasons, and I'm afraid that our inability to repair a fan fault effectively is not going to be one of them .

Hall of Fame Community Legend

Spurious router fan failures?

Could be an IOS bug.  Upgrade the IOS and see if it improves anything.

PS:  The ROMmon is OLD!

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