48
Tr
OUBLESHOO
TING
G
UIDE
SYMPTOMS
PROBLEM
SOLUTION
After a titration in Low Range,
the instrument displays 0.1 or
5.0 g/L blinking.
Wrong range selected.
Concentration out of
range.
Change range to High Range.
Recalibrate the pump.
After a titration in High Range,
the instrument displays 4.0 or
25.0 g/L blinking.
Wrong range selected.
Concentration out of
range.
Change range to Low Range.
Recalibrate the pump.
At startup the meter displays
the Hanna Instruments logo
permanently.
One of the keys is stuck.
Check the keyboard or contact the
vendor.
“Error xx” message is
displayed.
Internal error.
Power off the meter and then power
it on again. If the error persists,
contact the vendor.
“Stirrer error” message is
displayed at the end of pump
calibration or titration.
Check the stir bar and
beaker content.
If the error persists, contact the
vendor.
Non-spinning stirrer icon
blinking in pH calibration and
meter mode.
Check the stir bar and
beaker content.
If the error persists, contact the
vendor.
“Pump error” message is
displayed.
Check the tubing, valve
and syringe.
If the error persists, contact the
vendor.
At startup the meter displays
“Methods corrupted”.
The method file was
corrupted.
Contact the vendor.