12
ERROR CODES
Error Code
Description
The pH reading
displays “- - -”
The pH value is out of range:
the solution is too acidic or
too alkaline
The temperature
reading displays
“H” or “L”
(Model 850063)
The temperature value is out
of range: the temperature is
too high or too low
BATTERY INSTALLATION AND
REPLACEMENT
Note…
Remove the batteries when the meter will not
be used for one month or longer.
This meter uses two CR2032 button
batteries, which should provide over 100
hours of continuous use. When the low
battery indicator appears on the LCD, battery
replacement is needed.
Power on but no display
TROUBLESHOOTING
1) Make sure the time of pressing
power key is more than 100 mS.
2) Check the battery are in place and
make good contact and correct
polarity.
3) Replace with new batteries and try
again.
4) Move away the batteries for one
minute and then put back again.
10
Out of pH range, too
acidic/or too alkaline.
"H." Or "L."
Out of temp. range,
too cold/or too hot.
Slow response
Clean probe by immersing the electrode
in tap water for 10-15 minutes, then
rinse thoroughly with distilled water
or use a general purpose electrode
cleaner.
It is normal when the electrode is
not immersed in the water but
exposed in air.
pH value fluctuate quickly
LCD display “ - - - “
ATC
C
O
ATC
C
O
Power on but no display
TROUBLESHOOTING
1) Make sure the time of pressing
power key is more than 100 mS.
2) Check the battery are in place and
make good contact and correct
polarity.
3) Replace with new batteries and try
again.
4) Move away the batteries for one
minute and then put back again.
10
Out of pH range, too
acidic/or too alkaline.
"H." Or "L."
Out of temp. range,
too cold/or too hot.
Slow response
Clean probe by immersing the electrode
in tap water for 10-15 minutes, then
rinse thoroughly with distilled water
or use a general purpose electrode
cleaner.
It is normal when the electrode is
not immersed in the water but
exposed in air.
pH value fluctuate quickly
LCD display “ - - - “
ATC
C
O
ATC
C
O
