11 6 RT-SVP04F-EN
System Testing & Troubleshooting
DIAGNOSTICS Menu
The DIAGNOSTICS menu is used to view diagnostics that have resulted from system
failures within the unit. There are two lists where diagnostics reside; the Active list, and
the Diagnostic Event Log.
The Active list is used for viewing all active diagnostics and for clearing diagnostics that
can be manually reset. These lists of diagnostics are displayed after pressing the
DIAGNOSTICS key if active diagnostics are present.
Active manual diagnostics can be cleared in batch form at the unit mounted Human
Interface. When an Active diagnostic is manually or automatically cleared, it is removed
from this buffer. Automatically resetting diagnostics can not be reset by the Human
Interface, because the condition that caused the diagnostic has to be corrected for the
diagnostic to clear.
The word “MORE” is displayed on all screens if more than one diagnostic exist, except
for the last diagnostic. Upon reaching the last diagnostic, the word “MORE” disappears.
Pressing the NEXT key at this point causes the display to advance to the first diagnostic
in the Diagnostic Event Log.
The Diagnostic Event Log screens are displayed after scrolling through the Active list or
after pressing the
DIAGNOSTICS key when no active diagnostics are present. It’s used to view the past 20
diagnostics. Diagnostics in this log are stacked in inverse chronological order, with the
first diagnostic screen being the most recently reported diagnostic.
When a new diagnostic is displayed, the words “NOT VIEWED” are displayed with it.
After viewing the last not viewed diagnostic, the words “NOT VIEWED” change to
“VIEWED” for every diagnostic in the log. The diagnostic will remain this way as long
as it is in the log. This allows the operator to distinguish between old and new
diagnostics in the Event Log.
Pressing the NEXT key after reaching the last diagnostic in the Event Log advances the
display to the first diagnostic in the Active list if any exist. If not, the display reverts back
to the first Event Log diagnostic. If the Diagnostic Event Log is full (20 events), and
another diagnostic occurs, the oldest diagnostic is pushed off the end of the list. If all 20
diagnostics in the list are active when the 21st occurs, then the oldest Active diagnostic
is pushed off the end of the list. When an Active diagnostic is automatically or manually
cleared in the Active buffer, its status in the Diagnostic Log changes from Active to
History. If the operator does not clear an active diagnostic in the Active log, its status
will still show as active in the Diagnostic Log.
When a diagnostic screen is displayed for more than four hours without a key being
pressed, the screen will return to the operating status display.
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