Troubleshooting
Refer
to the following table for common problem messages or symptoms,
possible causes and corrective actions.
Error/Warning Description Solution
Close lid and push
Read.
The lid is open or lid
detection failed.
Make sure that the lid is
closed
during reading and
re-read.
Low Battery! Battery is low.
• Insert new batteries
• Connect USB/power
module if rechargeable
batteries are used
ADC Failure! Hardware error causing
reading to fail.
Repeat the reading.
Detector signal too low! Insufficient light on the
180° detector.
• Check for obstructed
light path.
• Check the lamp.
Overrange! Turbidity too high- caused
probably by calibrating
with RapidCal
™
only.
• Calibrate the upper
range.
• Dilute the sample.
Underrange! The measured
absorbance is below the
calibration range.
Repeat calibration
Please check the lamp! Signals are too low on the
90° and 180° detector.
2100Q: The lamp is
defective. Change the
lamp (refer to Replace the
lamp on page 11).
2100Qis: Contact
technical support.
Temperature too high!
Switch off instrument.
Temperature has
exceeded the meter limits
(>60 °C or >140 °F).
Turn off the meter and let
it cool down.
Error/Warning Description Solution
RST: Average value! Solids are settling too
slowly.
The reading mode
is not suitable for this
sample.
Select Normal or Signal
Average reading mode.
Confidence level is <
95%
The reading mode
Rapidly Settling Turbidity
did not meet the range of
≥ 95% confidence.
• Invert the sample
several times so that
the solids allocate.
Repeat the reading
again.
• Switch to the Normal
reading mode if the
sample is stable and
does not have settable
solids.
Standard value out of
range. Insert standard
and push Read
Used incorrect standard
value for the reading.
Insert the appropriate
standard and read again.
ID already in use. Enter
new ID
The Operator or Sample
ID is unavailable as it is
already assigned.
Create a new ID.
Error - Security Please
set password before
activating security
No password is created. Create a new password.
Please enter at least one
character.
Password must contain
minimum of one
character.
Create a password of at
least one character.
Password incorrect.
Please retry.
Incorrect password was
entered.
Enter the appropriate
password.
Please disconnect the
USB cable from your
computer.
Data storage does not
respond while connected
to the meter and the
computer.
Disconnect the USB
cable from the meter and
try sending data again.
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