KROHNE OPTISENS AAC 050 EN - Manual (Page 25)

Manual OPTISENS AAC 050
25 OPTISENS AAC 050
6.1 Error messages
Error message Cause Action
Slope error The slope determined by calibration
was higher than 200% or lower than
20 %. Please check the sensor connection
and cable, the flow, and the
temperature sensor and settings.
Then repeat the calibration.
If the error message remains, the
sensor has to be cleaned, regenerated,
or replaced.
Error input 1 The measuring sensor gives no
signal. Please check the connections, the
cable and the sensor for signs of
damage.
Error input 2 The temperature sensor gives no
signal. Please check the connections, the
cable and the sensor for signs of
damage. This message also appears if
automatic temperature compensation
was selected although no temperature
sensor was used.
Limit 1 / 2 The measured value exceeded
limit 1 (or dropped below limit 2,
respectively). Please check the dosing and readjust
the control parameters, if necessary.
Dosage check 1 / 2 Controller 1 (or 2, resp.) gives out a
100% output for more than the
defined period of time. Please check the dosing, especially the
feeding tubes and connections.
Caution! Carefully check for leaking
chemicals!
Ext. controller stop The digital input has been short-
circuited (in the „contact“ mode). This only indicates the external
controller stop. If, however, you have
connected a level sensor, this
message appears due to the „lack of
water“ alarm.
No water
The digital input has been short-
circuited (in the „flow“ mode). The flow has dropped below minimum.
Check the flow at the outlet of the
armature. If the flow is low although the
water supply is ok, take out the filter
and clean it with pressurized water. If
the flow is still low, also clean the flow
sensor.