Error Error message text Cause Remedy
15 The mA input supply
is overloaded.
The sensor input of
Channel 1 or 2 is used
in 2-wire connection
mode, e.g. together
with chlorine sensor
CLE3.
The polarity was not
noted or there is a
short circuit between
the two poles.
Check the polarity against the terminal
diagram.
Make sure that the two wires do not
touch (shorten the bared length, use
insulated end sleeves, use heat-shrink
tubing).
16 The mA input is
overloaded.
The sensor input of
Channel 1 or 2 is used
in 2-wire connection
mode, but the signal is
an active signal car‐
rying voltage.
Use a multimeter to check the meas‐
uring signal. If it is an active / driven
signal (voltage is measurable), then the
type of connection has to be selected
for active signals; refer to the terminal
diagram in the operating instructions.
This type of connection is not shown on
the enclosed terminal assignment dia‐
gram.
17 The level in the
storage tank 1 is too
low.
The chemical in
storage tank 1 is used
up.
Top up the corresponding chemical.
18 The level in the
storage tank 2 is too
low.
The chemical in
storage tank 2 is used
up.
Top up the corresponding chemical.
19 The level in the
storage tank 3 is too
low.
The chemical in
storage tank 3 is used
up.
Top up the corresponding chemical.
21 The conductivity is
too low.
This liquid cannot be
measured with this
sensor.
Use a suitable sensor, if necessary.
22 The conductivity is
too high
This liquid cannot be
measured with this
sensor.
Use a suitable sensor, if necessary.
[Diagnostics]
170
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