16
TROUBLESHOOTING
- If the display appears to be frozen, it is possible that the Data Hold mode has
been inadvertently activated. This is indicated by ‘HOLD’ in the bottom left of
the display. To exit the Data Hold mode press
MODE
or turn the meter off
and back on again.
- If the meter locks up and pressing any buttons fails to revive it, remove the
batteries and then reinsert the batteries.
Symptom
Possible
Cause
Action
Unit will not
power on
Batteries not in place
Dead batteries
Batteries polarity
incorrect
Insert, replace, or reorient
batteries
“BAT” indicator
shown on display
Batteries are weak
Replace batteries
Unstable readings
Insuff cient electrolyte
in probe. Air bubbles
visible when probe
inverted.
Electrolyte is depleted
Replace electrolyte, and
membrane cap assembly
Readings drift down Insuff cient
stirring
Stir sample with meter or
move probe in sample
Slow response
Dirty or damaged
membrane
Replace electrolyte and
membrane cap
Electrode can not
be calibrated
Depleted electrolyte
Dirty or damaged
membrane
Replace electrolyte and
membrane cap
Electrode can not be
calibrated after
replacing electrolyte
and membrane cap
Dirty probe.
Cathode is not a shiny
gold color.
Clean cathode with cleaning
cloth or cleaning paper. Do not
over polish.
Sample reading is
frozen
Meter is in
HOLD mode
Meter is locked
Release HOLD by momentarilly
pressing
MODE
button.
Remove batteries. Press
ON/
OFF
button. Replace batteries
and press
ON/OFF
button.
Stored readings will be lost.
