Operation
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DirectLine® DL423 Sensor Module User Manual
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5.2 Diagnostic Error Messages
When a diagnostic error or status condition occurs, the Online Display alternates
between measured PV and a text message.
Table 5-3 Online Diagnostic Errors
What you
see
What it is
What to do
CNFG
Configuration or Calibration data is
defective.
Reset unit or cycle power.
Second occurrence will
show
FALt.
FALt
Unit electronics are defective.
Replace electronics module.
These errors may occur when online PV or temperature is displayed.
CELL
Cell is defective, wrong type, or not
connected. The error forces the output to
exceed burnout level, 21.8mA, but does
not latch.
Check cell, cell type, and
connection.
When the source of the
error is removed, the error
will clear and the output will
return to normal operation.
P HI
Measured PV is > PV Maximum
Bring process within limits
P LO
Measured PV is < PV Minimum
Bring process within limits
t HI
Measured temperature is > 110
C
Bring process within limits
t LO
Measured temperature is <
10
C
Bring process within limits