IAI America CON-PGA - Manual (Page 229)

7. Operation of MEC Related Controllers
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Touch [n] to display the previous list screen.
Touch [Clear], and the details of all alarms will be cleared.
(Note) PowerUP No Error indicates that the controller power was turned on.
It does not indicate an error.
The time of occurrence of each alarm is indicated by an elapsed time from this PowerUP No Error.