41
10 ERROR MESSAGES
LCD Display
Indicates
Cause
Solution
Err annunciator
Unrecognized input from
keypad
Wrong input in selected
mode.
Release key. Select valid
operations depending on
mode.
CAL & Err
annunciators on /
Buffer and
electrode
indicators blink.
Calibration error.
Wrong value input at
calibration.
Dirty probe.
Check your input value, clean
probe.
See Calibration sections or
Probe Maintenance section.
Battery indicator
blinks
Low battery level.
Need new batteries or
battery connection is bad.
Clean battery contacts.
Replace batteries with fresh
ones, noting polarity.
Err 1 (in primary
display)
Memory write error.
Instrument too old (> 10
years). Hardware failure.
Turn meter on and off again.
If message persists, return
unit*.
Err. 2 (in primary
display)
Memory checksum error.
Hardware failure.
Turn meter on and off again.
If message persists, return
unit*.
Err. 3 (in primary
display)
A/D converter error.
Hardware error.
Turn meter on and off again.
If message persists, return
unit*.
Err. 4 (in primary
display)
Keypad error.
One or more keys on the
keypad are stuck.
Turn meter on and off again.
If message persists, return
unit*.
* See “Warranty” and “Return of Items” on pages 47 and 48.
If an error message appears in the primary display (the
upper row of larger digits), switching off the meter and
switching it on again may eliminate the error message. Refer
to diagram on right.
If error persists, or the meter shows incorrect values, return
the meter.
For a complete diagram of the display see page 2.
