Severity Levels

Not Alarmed (NA)

AID Type

Blank

Date

Month/day/year that the condition was detected

Time

Hour:minute:second that the condition was detected

Probable Cause

INHAUDB (Alarm audibles inhibited)

Effect on Service

Standing Condition (SC)

Alarm Entity Type

COM

Description

ACO active

Likely Cause

User selected Fault → Alarm Cutoff or pressed the ACO TEST push button on SYSCTL circuit pack.

Visible Indication

Lighted ACO LED on the SYSCTL faceplate

Action

No action is necessary. The condition clears automatically when a new alarm is detected or all alarms clear.