Honeywell UDA2182 manual Auto Cycle Fail Messages, Fail Message Reason

Diagnostics and Messages

12.4 Auto Cycle Fail Messages

Overview

Auto Cycle Fail is active whenever an auto cycle failure has occurred. The status message “Auto Cycle n Fail” is also displayed during a fail state. Once detected, the current cycle proceeds immediately to the Probe Insert step (if enabled) or to the Resume Delay step. The fail state remains for the duration of the Resume Delay, whereupon the fail state returns to 0 and the fail message is cancelled. A fail state also provides a detail message in the lower half of the Auto Cycle display regarding the specific reason for the error. These messages are listed below:

	Table 12-3 Auto Cycle Fail Messages
Fail Message		Reason
Probe Extract Timeout		Probe Transit enabled, Extract Wait Src not None and state not 0
		within Max Transit Mins of start of Probe Extract.
Probe Insert Timeout		Probe Transit enabled, Insert Wait Src not None and state not 0
		within Max Transit Mins of start of Probe Insert.
Input Fault		Input board, PV or temperature fault has occurred during calibration
		(fault type in status message).
Solution Unstable		PH PV or temperature not stable for calibration within elapsed time
		limit Max Cal Mins.
Buffer Span Too Low		Difference of PV reading for pH Cal 2 (Slope) and that of last pH Cal
		1 (zero offset) < 1.8 pH.
Offset Underrange		PH calibration has calculated and rejected a zero offset < -2 pH.
Offset Overrange		PH calibration has calculated and rejected a zero offset > 2 pH.
Slope Underrange		PH calibration has calculated and rejected a slope < 80 %.
Slope Overrange		PH calibration has calculated and rejected a slope > 105 %.
Readings Unstable		DO PV or temperature not stable for calibration within elapsed time
		limit Max Cal Mins.
Probe Current Too Low		Probe current is < 5 μA during DO calibration.

194 UDA2182 Universal Dual Analyzer Product Manual January 2009