Tab. 7: Warning alerts
Warning
Warning alert text
Cause
Remedy
01
The limit value was
undershot
The measured value is below
the limit value
Check whether the choice of the limit
value matches the application and
adjust if necessary.
Check the design of the actuator: has
too small an actuator been selected?
Check the concentration of the feed
chemical: is the concentration too low?
Check the control parameters: does
the control tend to over/undershoot?
02
The limit value was
exceeded
The measured value is above
the limit value
Check whether the choice of the limit
value matches the application and
adjust if necessary.
Check the design of the actuator: has
too large an actuator been selected?
Check the concentration of the
metering chemical – is the concentra‐
tion too high?
Check the control parameters: does
the control tend to over/undershoot?
03
The wash timer has
timed out. Mainte‐
nance is necessary
The wash timer activates a
relay.
The sensor is cleaned with
cleaning fluid.
A visual check may be neces‐
sary as per your maintenance
schedule
Clean and check the sensor.
04
The measuring
channel is not yet
calibrated
The sensor connected to a
measuring channel has not yet
been calibrated
Calibrate the sensor
71
The battery needs to
be replaced
The battery has a service life
of about 10 years, but this can
be reduced by environmental
factors
Replace the battery or inform Service
Battery BR 2032, Part No. 732829
72
Check the time
The time has changed when
replacing the battery
Reset the time
73
The fan has a fault
The internal fan is no longer
rotating
Please check to see whether an object
has become trapped in the impeller
otherwise return the controller to the
manufacturer for inspection
89
System warning 1
There is a system error
Return the controller to the manufac‐
turer for inspection
[Diagnostics]
51
