16
ERROR DISPLAYS AND TROUBLESHOOTING
[Note:
If the meter still does not perform normally after the above
measures are taken, call
Jenco
representative.
]
Main
Display
Possible cause(s)
Corrective Action(s)
"Er1"
1.
“Stand”
was pressed
before the electrode and
ATC/Temp probe settled
to /-1.00 pH of the
buffer value.
2. pH electrode offset is
greater/less than +/-1.00
pH.
3. pH electrode is faulty.
1. Press
“Clear”
key, allow
sufficient time for the
electrode and ATC/Temp
probe to stabilize, re-press
“Stand”
key to start the
calibration procedure.
2. Replace the buffer and/or
the pH electrode. Press
“Clear”
key to recalibrate
meter.
3. Replace electrode.
"Er2"
1.
“Slope/Enter”
was
pressed
before the
electrode and ATC/Temp
probe settled to within
30% of the buffer value.
2. Buffer 1.68, 4.00, 4.01,
9.18, 10.01 and 12.46 pH
is not correct.
3. pH electrode slope is off
by more than 30% of
ideal slope.
1. Allow sufficient time for the
electrode and ATC/Temp
probe to stabilize, re-press
“Slope/Enter”
key to
continue the calibration
procedure.
2. Check if the correct buffer
is used.
3. Replace the buffer and/or
the pH electrode. Press
“Clear”
key to recalibrate
meter.
"Er3"
In pH calibration mode,
temperature is out of the
0.0 to 60.0 °C range.
Bring the pH buffer
temperature within range.
"over"/
“undr”
1. Measured pH is out of
the -2.00 to 16.00 pH
range.
2. Measured mV (RmV) is
out of the –1999.9 to
1999.9 mV range.
3. Measured temperature is
out of the 0.0 to 100.0 °C
range.
1. Bring sample pH into the
correct measuring range.
2. Bring sample ORP into the
correct measuring range.
3. Bring sample temperature
into the correct measuring
range.
