Diagnostics Menu - Trane S*HF*20-75 Troubleshooting Manual

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 cannot 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 Event Log changes from
"Active" to "History". If the operator does not clear an active diagnostic in the Active List, its status will still show as active
in the Diagnostic Event 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.
One of the following screens will be the first screen displayed when
the Diagnostic key is pressed.
Diagnostic Menu ---- Info
No Active Diagnostics (NEXT) History Log
Press CANCEL to Clear All Active Manual
Diagnostics, or Press NEXT to View
Note: Pressing the Cancel key to clear the diagnostics will
prompt the following screen...
Diagnostic Reset Is Password Protected
Please Enter Password:
Notes:
1. Press the + (plus) or - (minus) keys to enter the password.
2. Press the Enter key to confirm this choice. When the correct
password is entered, the following screen will be displayed...
RT-SVP07B-EN
OR
Used With: All Units
Factory Presets: N/A
Possible Values: + (Plus) and - (Minus)
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