Power Supply Unit (PSU1) reports AC lost

[johng231]

Hello

The CM is reporting this alarm for 2 674s in the same remote location. We confirmed with the local admin that the power supplies are connected and green light is on.

If you do a "show hardware", the following outputs show the power supplies are connected and powered on.

Primary Power Supply Unit (Installed; Powered)

Redundant Power Supply Unit (Installed; Powered)

How can I can clear the bottom alarm from showing up on the CM?

show alarms  det

Critical Alarms:

----------------

None

Major Alarms:

-------------

        Alarm ID                 Module/Submodule               Instance

   ---------------             --------------------          ---------------

   1 psu_ac_status             sysmon/psu1_vinok            no power                

     Aug 21 13:11:55.920 UTC, Equipment Alarm, #000002, 1000:445040

     Power Supply Unit (PSU1) reports AC lost

Thanks,

John

[Nicolas Fournier · Accepted solution]

Hi John,

Which version are you running on those devices?

If you are running a version preceding 4.4.5, you are most then likely running into this bug:

CSCtq33146 PSU "No Power" Alarm Raised After AC Power Cycle

More info:

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtq33146

If so, I would try the second workaround that you have in the case notes.

Regards,

Nicolas

[johng231]

Thanks... i'm running version 4.4.1