44
MW105 & MW106 Portable Meters
13. TROUBLESHOOTING
Symptoms
Problem
Solution
Slow response/
excessive drift
Dirty pH electrode
Soak the electrode tip in
MA9016
for 30 minutes,
then follow the Cleaning
procedure.
Display shows
blinking full scale
value
Reading out of
range
Check if the sample is
within measurable range;
check general electrode
status.
mV scale
out of range
Dry membrane or
dry junction
Soak electrode in
MA9015
storage solution for at
least 30 minutes.
Display shows
blinking °C or °F
Disconnected
temperature sensor
Reconnect temperature
sensor or replace the
electrode.
Meter fails to
calibrate or gives
faulty readings
Broken probe
Replace the probe.
LCD tags displayed
continuously at
startup
ON/OFF key is
blocked
Check the keyboard.
If error persists, contact
Milwaukee Technical
Service.
“Internal Er X”
Internal hardware
error
Restart the meter.
If error persists, contact
Milwaukee Technical
Service.