67
SYMPTOMS
PROBLEM
SOLUTION
Reading fluctuates up and
down (noise).
EC probe not properly
connected.
Ensure the probe is connected
to the meter.
Check that the probe is
immersed in your sample.
Display shows the top of the
range reading blinking.
Reading out of range.
Recalibrate the meter;
Check the sample is within the
measurable range.
Check the range is not fixed
or locked.
Meter fails to calibrate or
gives faulty readings.
Broken EC probe.
Replace the probe.
At startup the meter displays
Hanna Instruments Logo tags
permanently.
One of the keys is blocked.
Contact your local Hanna
Instruments Office.
Meter shuts off.
Dead batteries; Auto Power
Off feature is enabled: in this
case, meter shuts off after
selected period of non use.
Replace batteries.
Press
ON/OFF.
“Error” message at start up.
Internal error.
Contact your local Hanna
Instruments Office.
The instrument does not start
when pressing
ON/OFF.
Initialization error.
Press and hold down
ON/OFF
for about 20 sec. or
disconnect and then connect
the batteries.
TROUBLESHOO
TING GUIDE
