Thermo Fisher Scientific CyberScan CON 400 (For units manufactured from March 2010 onwards) - Manual (Page 48)

Instruction Manual CON 400
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10 ERROR MESSAGES
LCD Display Indicates Cause Solution
Err annunciator Unrecognised 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. 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 or
fault in keypad. Turn meter on and off
again. If message persists,
return unit*.
* See “Warranty” and “Return of Items” on pages 49 and 50.
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.