Hach-Lange PROGNOSYS - Manual (Page 18)

Message Possible cause Solution
Check wiper
function The wiper is mechanically blocked. The
measurement window is not clean anymore.
No sample is pulled in the instrument. The
wiper is possibly in front of the window.
• Examine and clean the measurement
window fully.
• Complete a wiper test and do a stop
position test.
• Contact technical support.
Wiper position
unknown
Replace wiper
motor The counter for wiper motor is expired. Contact technical support to replace the
wiper motor.
Calibration data
faulty The factory calibration data is lost. Contact technical support.
Instrument error The instrument caused an error message. Examine the error message on the
controller. Refer to the sensor
documentation for solutions.
Instrument
warning The instrument caused a warning message.
Humidity probe Moisture in the sensor is over limit: the
desiccant is expired. There can be a problem
with the gasket set for the sensor sleeve or
the wiper axle. Contact technical support immediately to
replace the gasket, so that the instrument
operates correctly.
LED faulty LED intensity is too low. Contact technical support.
Replace gasket The time for the wiper axle gasket cycles is
expired. Contact technical support to replace for a
wiper axle gasket.
LDO Probe, Model 2
Message Possible cause Solution
Red amplitude error No sensor cap is installed. Refer to the LDO manual to install the sensor
cap. If the cap is already installed, replace the
sensor.
The red LED is defective. Contact technical support.
Blue amplitude error No sensor cap is installed. Refer to the LDO manual to install the sensor
cap. If the cap is already installed, replace the
sensor.
The blue LED is defective. Contact technical support.
Temp <0°C/32°F The sample temperature is less than
the specified value. Make sure that the sample temperature is >
0°C (32°F). Move the sensor to another
position.
The thermistor system is defective. Contact technical support.
Temp >50°C/122°F The sample temperature is more than
the specified value. Make sure that the sample temperature is <
50°C (122°F). Move the sensor to another
position.
The thermistor system is defective. Contact technical support.
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