Troubleshooting Guide; Error Messages; General Troubleshooting - Fisher Scientific accumet AE150 User Manual

Troubleshooting Guide

Error Messages

The table provides a quick guideline for diagnosis of possible problems indicated by meter
generated messages. The table also provides possible solutions to problems encountered.
Error Message Indicates
Wrong keypad
Err icon
input
Err + Electrode Calibration
icons error
Measured
Ur or Or (in
value is out of
upper Display)
range

General Troubleshooting

Problem Probable Cause
Main power not switched on
No display
AC Adapter socket not inserted properly Re-insert AC Adapter socket
Insufficient reference electrolyte in
electrode
Broken electrode
External noises or induction (i.e.
Unstable reading
electrical noise caused by a nearby
motor)
Dirty electrode
Slow response Dirty electrode
HOLD mode in operation
Meter not
responding to key
Internal program error
24 of 28
accumet AE150 pH Benchtop Meter
Cause
Key does not work in the current
operation mode
Buffer value does not match
value displayed or electrode is
disconnected or failing
• Electrode not connected,
• Electrode clogged, dirty or
broken
• Meter not calibrated
• Measurement is under range or
over range
Corrective Action
Release key and select valid
keys depending on mode
Use fresh buffer solution, check
electrode connection or
possibly replace electrode
• Make sure electrode is
connected
• Clean or replace electrode
Recalibrate the meter
• Treat samples to bring within
meter measuring range
Remedial Action
Switch on the power supply
Fill electrode with reference electrolyte
Replace electrode
Remove or switch off interfering
device
Clean the electrode, hydrate and then
rejuvenate if necessary
Clean the electrode, hydrate and then
rejuvenate if necessary
Cancel Hold mode by pressing the
HOLD key
Reset all internal programs by
removing and reinserting the A/C
adapter
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