Error
Error message text
Cause
Remedy
Check the coaxial cable connection for
corrosion and moisture and replace
with a new cable, if necessary
pH/ORP sensor is faulty
Replace the sensor
02
The mV input voltage
is too high
The connected signal does
not come from a pH sensor
An interference signal is being
picked up
Check the origin of the sensor signal.
Check the raw signal by pressing .
The sensor raw value is shown here in
mV. If the value with pH is greater
than ± 500 mV or with ORP is greater
± 1500 mV, then these are wrong
sensor values. Check once again the
cabling and origin of the sensor signal.
Ensure that the measuring lines are
not laid parallel to power cables.
03
The temperature is too
low
Incorrect sensor connected
Check the type of sensor connected.
Only Pt 100 and Pt 1000 sensors work
04
The temperature is too
high
No sensor or incorrect sensor
connected
Check the sensor connection
Check the type of sensor connected.
Only Pt 100 and Pt 1000 sensors work
05
There is a calibration
error
With amperometric analysis
(e.g. chlorine): the calculated
reference value deviates too
much from the real value or
the sensor value.
With amperometric analysis (e.g.
chlorine): Check the correctness of the
reference method, e.g. DPD1
With pH and ORP: the buffers
used differ from the nominal
value, are outdated or watered
down
With pH and ORP: replace the buffer
with new buffer
06
No sensor is fitted
Coaxial cable connection dis‐
connected
Check the correct connection of the
coaxial cable connection
No sensor is connected
07
Check the mechanical
state of the sensor.
Glass breakage is pos‐
sible.
Membrane glass broken
Replace sensor
Check the reason for the broken glass
e.g. solids, too high a flow velocity
08
The checkout time was
infringed
In the
[Control] menu, the set
control variable has exceeded
the threshold for a longer time
than the checkout time control
variable
The control section needs a longer
time to regulate itself than the selected
checkout time.
The control section needs a greater
control variable threshold to regulate
itself than the selected one.
The metering chemical is empty or has
a too low/high a concentration
The metering line is disconnected or
the point of injection blocked.
09
The mA input current
is too high
The current is greater than the
maximum permitted current of
23 mA
Check the origin of the current.
Check the raw value in mA in the
Information menu by pressing . If
the value is >23 mA, then it is not a
correct sensor signal. Replace the
sensor with a new sensor.
[Diagnostics]
48
