Nova-Tech pH-CON 10 - Manual (Page 23)

Instruction Manual PC 10
- 19 -
9 . E R R O R M E S S A G E S
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
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) Checksum error. Batteries too weak.
Hardware failure.
Press ENTER, then turn off
meter. Change batteries.
Recalibrate.
Return unit *.
Err. 3 A/D converter error. Faulty hardware Return unit *.
* See “Warranty” on page 24 and “Return of Items” on page 25.
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. See Figure 26
below.
If error persists, or the meter shows incorrect values, return the meter.
For a complete diagram of the LCD display, see Figure 2 on page 2.
Figure 23: Error message on LCD
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