23
TROUBLESHOOTING GUIDE
PROBLEM
REASON
SOLUTION
Flashing
Low battery. Readings are
reliable.
Charge battery or use USB
wall/computer adapter.
“Low Battery”
Battery voltage is very low.
Readings are not reliable.
Charge battery or use USB
wall/computer adapter.
“Shut Down Low Batt”
Shut Down
Battery is too low to operate
the unit.
Charge battery or use USB
wall/computer adapter.
“Overrange”
Sample is outside of
acceptable range.
Dilute sample and test
again.
Unusually large negative
or positive readings
when performing
calibration
Incorrect standards used to
calibrate meter.
Use fresh 0.0 standard in
clean tube. Reset meter to
factory default settings.
Recalibrate meter.
