Severity Levels

Critical (CR), Major (MJ), Minor (MN), or Not Alarmed (NA)

Default: Major (MJ)

AID Type

System Control slot

Date

Month/day/year that the condition was detected

Time

Hour:minute:second that the condition was detected

Probable Cause

EXT (External failure)

Effect on Service

CR, MJ, MN = NSA

Not Alarmed = Standing Condition (SC)

Alarm Entity Type

EQPT

Description

fan shelf failed

Likely Cause

The fan shelf failed or the fan filter is clogged.

Visible Indication

Lighted CR, MJ, or MN LED on the SYSCTL faceplate (when the severity level is provisioned to Critical, Major, or Minor, respectively). None when the severity level is provisioned to NA.

Action

Proceed to Procedure 5-39: Clear "fan shelf failed" alarm.