Troubleshooting - Hach 2100A User Manual

Troubleshooting

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