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AmpHel electrodes do
not respond to pH
changes.
The meter fails to cali-
brate or gives faulty
readings.
At start-up the LCD dis-
play all segments per-
manently.
Explicit warnings are
displayed during pH
calibration.
The electrode condi-
tion and response
gauges are not dis-
played after calibra-
tion.
The electrode condi-
tion and response
gauges are empty.
The meter displays
empty Electrode re-
sponse scale.
“Err xx” message dis-
played.
The battery is run down.
Broken pH electrode.
One of the keys is
blocked.
Dirty pH electrode or con-
taminated buffers.
a) The meter has not
been calibrated on
the current day.
b) Only 1-point calibra-
tion has been pre-
formed.
c) Calibration not per-
formed with pH 7.01
and pH 3.00 buffers.
Not enough data avail-
able to evaluate re-
sponse time.
Internal error.
Replace the electrode.
Replace the pH electrode.
Check the keyboard or con-
tact your dealer.
Follow displayed instructions.
Use Hanna HI1048P elec-
trode and check the pin con-
nection.
Perform a 2-point calibration
procedure.
Calibrate using pH 7.01 and
pH 3.00 buffers.
Repeat calibration more
carefully.
Power the meter OFF and then
ON again. If the error persists,
contact your dealer.
Symptoms Problem Solution