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Operation
5.2 Diagnostic Error Messages
When a diagnostic error or status condition occurs, the Online Display alternates between
measured ORP and a text message.
What you see
CNFG
Data error detected.
FALT
Unit electronics are defective.
These errors may occur when online ORP is displayed.
O HI
Measured ORP is > 1600 mV
O LO
Measured ORP is < –1600 mV
PRBE
Probe is defective, removed from process, or not
connected.
Forces the output to burnout level (approximately
21.8 mA).
This error may occur during probe calibration and abort the calibration process.
FAIL
This error message is preceded by the message
"FAIL"
ZRNG The Zero (Standardization) calibration
18
Table 5-3 Online Diagnostic Errors
What it is
failed due to a calculated Zero Offset
value outside the range of –120 mV to
+120 mV.
DirectLine® DL422 Sensor Module User Manual
What to do
Reset unit or cycle power.
Second occurrence will show FALT.
Replace electronics module.
Bring process within limits
Bring process within limits
Check probe, connection and
presence of sample.
When the source of the error is
removed, the error will clear and the
output will return to normal
operation.
Press Mode to return to online
display.
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