VI-6
Troubleshooting
Thermo Scientific Orion 2111LL Sodium Monitor User Guide
ROSS and the COIL tradedress are trademarks of Thermo Fisher Scientific Inc. US Patent 6,793,787
Displayed
Event Code
Description
Cause
Troubleshooting
System Error Codes - Red LED (cond’t)
E03
MEAS OUT OF RANGE
Sodium measurement out of range,
the display should also be flashing
‘9999’ or ‘0000’
Check if water fills flow cell, electrode is not connected, electrode
cables are faulty, or reference junction is fouled.
E09
BAD SLOPE
Last calibration produced a bad slope.
Slope is more than 63 mV/decade
or less than 45 mV/decade, or the
calibration standards may have been
interchanged.
Recalibrate the instrument using fresh standards. Recalibrate in the
correct sequence using standard 1 then standard 2.
E3
CAL OVERDUE
Calibration is overdue by more than
50% of the user specified time
interval.
Recalibrate the instrument
E
TEMP BROKEN
Temperature sensor on channel 1
broken or out of range.
Check ATC cable connections and probe for damage. Replace if
needed.
E5
BAD OFFSET
Last calibration produced a bad Eo
offset.
Recalibrate the instrument using fresh standards. Check reference
electrode and sensing electrode connections. Re-etch the sensing
electrode. Replace electrodes if needed.
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