Led Status - Hach SC4200c Manuel D'utilisation De Base

Section 9 Troubleshooting

9.1 LED status

Problem
The inner green power
LED is off.
All indicator LEDs are
off.
The sensor status LED
stays amber.
The sensor status LED
stays red.
The sensor status LED
flashes red.
The sensor status LED
flashes red.
The sensor status LED
stays off, but the second
sensor operates.
Possible cause
Power is not supplied to
the controller.
A warning message is
reported by the sensor.
There is an invalid
measurement due to a
sensor error.
There is a
communication failure
between the sensor and
the controller.
The sensor type is not
supported by the cloud.
Sensor connection issue
Sensor connection issue
Solution
Make sure the power cable is connected to
the controller. Contact technical support.
Refer to the sensor warning description
shown in the MSM and to the sensor user
manual.
Refer to the sensor error description shown
in the MSM and to the sensor user manual.
Examine the sensor and the sensor cable for
damage. If damage is found, contact
technical support.
If no damage is found, disconnect the
sensor, wait until the LED red is off, then
connect the sensor again. Contact technical
support if the LED shows red again.
Make sure that the sensor is supported by
the MSM.
If the sensor is supported, contact technical
support.
Make sure that only two sensors are installed
in the controller. Although two analog module
ports are available, if a digital sensor and two
modules are installed, only two of the three
devices will be seen by the controller.
Make sure that the analog module and the
digital sensor are not connected to the same
channel. The analog module ports are
internally connected to the sensor channel. If
a digital sensor and an analog module is
connected to the same channel only the
module is seen by the controller.
Make sure that the controller is compatible
with the mA input module. Contact technical
support.
Examine the sensor and the sensor cable for
damage. If damage is found, contact
technical support.
If no damage is found, disconnect the
sensor, wait for 15 seconds, then connect
the sensor again. Contact technical support if
the LED stays off again.
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