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Troubleshooting
69
Error codes
The converter has a function for displaying various error codes.
A blinking error code is displayed on the sub display area.
No more than two types of errors can be displayed. If multiple errors occur, the errors are
displayed in the order of frequency.
Description of error codes
Tip
If an error code is displayed, the HOLD display blinks and the transmission output will be held at the
value specified in the setup menu.
Error code
Description of error code
Remedial action
E-41
(Zero calibration error)
Decrease in the amount of
transmitted light
Clean the measuring cell and try zero calibration with clean water.
If E-41 still occurs during normal zero calibration, contact us.
E-43
Automatic zero calibration error
This error remains activated until the next time zero calibration is
performed properly or zero calibration is performed manually. The
measured turbidity value is output by the previous calibration
information and the transmission output is not held.
If the criteria for stability of zero calibration are too strict, calibration may
not be performed. Adjust to the optimum stability level and time.
E-80
(Sensor connection error)
Detector and converter are
disconnected
Check the wire connection between the detector and converter.
The connection of the detector is always monitored. If connection is
made under normal conditions, this error goes off “ Sensor cable
connection ” (page 27).
E-81
(Sensor memory error)
Loss of the contents of the
detector's internal memory
Turn OFF the power supply and turn it ON again. If the sensor memory
error does not go off even when the system is restarted, contact us.
E-82
(Sensor ADC error)
Malfunction of the A/D converter
inside the detector
Contact us.
E-85
(Cleaner connection error)
Cleaner is disconnected
Check the wire connection between the sensor and cleaner, and correct
it to a normal condition.
E-90
(System error)
Converter internal
communication error
Turn OFF the power supply and turn it ON again.
If the system error does not go off even when the system is restarted,
contact us.
E-91
(System error)
Malfunction of the A/D converter
E-92
(System error)
Loss of the contents of the
memory, such as setting values
and calibration values