Figure 6 Replace a fuse
Troubleshooting
Refer to the tables in this section for error codes, diagnostic codes,
common problem messages or symptoms, possible causes and
corrective actions.
Error codes
Table 3 lists the error codes shown for different conditions. Error codes
identify instrument malfunction or operator error.
The instrument continues operation in an error condition.
Push ENTER to clear an error code from the display.
Note: Any calibration being calculated when an error occurs, is discarded. The old
calibration is kept.
Table 3 Error codes
Error Description Solution
ERR01 The turbidity of the
dilution water is greater
than 0.5 NTU.
Start the calibration again with lower turbidity
dilution water.
Note: Ignore ERR01 when the sample cell diameter
is less than 25 mm. Push UNITS/Exit to go back to
measurement mode.
ERR02
• Two calibration
standards have the
same value.
• The difference
between two
calibration standards
is less than
60.0 NTU.
• The turbidity of
Standard 1 is too
low (less than
10 NTU).
1. Inspect the preparation of standards.
2. Do the calibration again.
Note: Ignore ERR02 when the sample cell diameter
is less than 25 mm. Push UNITS/Exit to go back to
measurement mode.
ERR03 Low light error
1. Put the sample in the instrument again.
2. Make sure that the lamp icon light is on.
3. Make sure that an object is not in the
light path.
4. Do sample dilution if necessary.
ERR04 Memory malfunction
1. Turn the instrument off and then back on.
2. Contact Technical Support if the error
occurs again.
ERR05 A/D is over the range
1. Make sure that the light shield is closed.
2. Contact Customer Service if necessary.
English 17
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