YSI 3100 - Manual (Page 21)

17
6. Troubleshooting
Error Messages
The instrument performs a Power On Self Test each time it is turned on. The following error
messages are provided to facilitate troubleshooting. They appear on the LCD when an error is
detected.
SYMPTOM POSSIBLE CAUSE ACTION
1. Instrument will not turn on •
Power supply
•
Instrument requires service
•
Check power supply and AC outlet
•
Return system for service
2. Instrument will not calibrate
•
Incorrect calibration procedure
•
Cell needs cleaning
•
Instrument requires service
•
See 4.1 Cell Calibration
•
See 5. Maintenance
•
Return system for service
3. Instrument readings are inaccurate
•
Calibration is required
•
Cell is contaminated
•
Temperature coefficient has been
set incorrectly
•
Reference temperature incorrect
•
Readings are or are not temperature
compensated.
•
See 4.1 Cell Calibration
•
See 5. Maintenance
•
See 4.2 Temperature Coefficient
•
See 4.3 Reference Temperature
•
See 3.4 Measurement Modes
4. Main Display reads “OVEr”
•
Conductivity Reading is over
range:
>112 uS with K=0.01 cell
>11.2 mS with K=0.1 cell
>112 mS with K=1 cell
>499.9 mS with K=10 cell
•
Salinity reading is > 80ppt
•
User cell constant cal is over the
limit of the current range
•
In all cases, check calibration
values and procedure; check
Advanced Setup settings.
•
Set cell constant to correct range.
See 3.3 Configure the 3200, Cell
Constant.
•
If each of these is set correctly,
return system for service.
5. Main Display reads “Undr”
•
User cell constant cal is under the
limit of the current range
•
Set cell constant to correct range.
See 3.3 Configure the 3200, Cell
Constant.
•
Recalibrate using known good
conductivity standard. See 4.1 Cell
Calibration.
•
Follow cell cleaning procedure. See
5. Maintenance.
6. Main Display reads “rErr”
•
User has selected manual ranging &
sample exceeds selected range
•
Conductivity reading is over the
range of the instrument: >499.9 mS
•
Use the ENTER key to select a
higher or lower manual range, or to
set system to Autoranging.
7. Main Display reads “PErr”
•
Incorrect sequence of key strokes
•
Refer to manual section which
provides step by step procedures
for the function you are attempting.