NAVI D-25 Instruction Manual page 181

6 Maintenance and Troubleshooting
6.5 Troubleshooting
● CLR is flashing (during ION measurement)
170
Check this point
As shown in the diagram, use a jumper wire or bent
paper clip to short the meter by touching both the center
pin and some metal part in the electrode connector.
If the flaching measured value disappears when this
done, the meter is nomal.
Concentration cannot be measured correctly.
Cause
The pH meter is
in default (initial-
ized) status.
How to solve problem
Calibrate the pH meter.
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