7
Troubleshooting
24
Install batteries with c/- polarity.
Replace with new batteries
Clean & recondition probe
Install probe guard & replace
calibration solutions
Batteries are not installed, were
improperly installed, or are too weak
Dirty / Oily probe
Probe guard not installed or
calibration solution incorrect
No display
Replace batteries
a) Tap probe to remove bubbles
b) Clean probe & recalibrate
c) Make sure sample entirely
covers the probe sensors
d) Move or switch off
interfering motor
e) Replace probe
Low battery
a) Air bubbles in probe
b) Dirty probe
c) Probe not immersed enough
d) External noise pickup or
induction caused by nearby
electric motor
e) Broken probe
“
LO
” displays
in the LCD
Unstable
readings
Slow response
Inaccurate
readings /
can’t calibrate
Check the value of the conductivity
calibration solution. Switch to manual
calibration mode and re-calibrate
Attempted calibration value
was not within the ±40%
auto calibration window
“
Er1
”
COND / TDS
Ensure that the temperature is
within the acceptable range
Auto calibration was not within
(0 - 50°C) temperature range
“
Er2
”
Temperature
calibration error
Problem
Cause
Solution