Honeywell VPR100 User Manual page 288

On-Site Adjustments
ATTENTION
Be advised that the INPUT FAIL diagnostic will continue to be displayed even after its cause has disappeared.
After verifying that this diagnostic's cause has been corrected, you may clear the INPUT FAIL message from
all ON LINE screens by performing one of the following sequences of steps.
1) Acknowledge the INPUT FAIL diagnostic.
From the ON LINE main menu, select ACCESS SUMMARIES. Select DISPLAY DIAGNOSTICS. Use the
<Up> and <Down> buttons to highlight the INPUT FAIL diagnostic(s) that you wish to acknowledge and then
press <Enter>. Once the diagnostic has been acknowledged, it will still be listed in the DISPLAY
DIAGNOSTICS screen but will no longer be displayed on any ON LINE screen.
2) Delete the INPUT FAILURE diagnostic.
From the ON LINE main menu, select ACCESS SUMMARIES. Select DELETE ALL DIAGNOSTICS. Once
this menu choice has been executed, all diagnostic messages will be deleted from the DISPLAY
DIAGNOSTICS screen and will no longer be displayed on any ON LINE screen.
During power-up, if an analog input is open or is out of range, the setpoint and process variable values will
display OFF and the loop's AUTO mode is disabled. Check connections to determine problem. During
calibration if the input reference voltages supplied by the technician are outside acceptable limits a "CALIB
FAIL" message will be generated.
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