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Warning & Error Descriptions
8. WARNING & ERROR DESCRIPTIONS
The instrument shows clear warning messages when erroneous conditions appear and when measured values
are outside the expected range. The information below provides an explanation of the errors and warnings,
and recommended action to be taken.
There is an excess amount of ambient light reaching the detector. Ensure that
the notch on the cap is positioned securely in the groove before performing
any measurements. If the issue persists, please contact Hanna Instruments
®
technical support.
The sample and the zero vials are inverted.
Swap the vials and repeat the measurement.
There is either too much light or the instrument can not adjust the light level. Please
check the preparation of the zero vial and that the sample does not contain any debris.
The meter is either overheating or its temperature has dropped too low to operate
within published accuracy specifications. The meter must be between 0 and 50 °C
(32 and 122 °F) to perform any measurements.
Meter temperature has changed significantly since the zero measurement has
been performed.
The zero measurement must be performed again.
The measured value is outside the limits of the method. Verify that the sample
does not contain any debris.
Check the sample preparation, the measurement preparation and method range.
Date and time settings have been lost. Reset the values. If the issue persists,
please contact Hanna Instruments technical support.
English is the only available language. Help function is not available. Restart the
meter. If the issue persists, please contact Hanna Instruments technical support.
Battery level is too low for the meter to function properly. Replace the batteries
with new ones.