Xylem WTW ColorVis 705 IQ, Operating Manual, Page: 44 / 56

What to do if...
ColorVis 705 IQ
44 ba77260e01 06/2021
Display of
ERROR
Cause Remedy
– Sensor not correctly connected – Check the assignment of the termi
-
nal connections
– Load at a power supply module
too high
– Install another power supply module
in the vicinity of the sensor
– IQ S
ENSOR
N
ET
cable towards the
ColorVis 705 IQ too long (voltage
drop too great)
– Install another power supply module
in the vicinity of the sensor
– Electrical connection between
power supply module and
ColorVis 705 IQ is interrupted
– Check the cable connection step-
by-step starting with the power sup
-
ply module, and replace any defec
-
tive cable sections.
– Check the contacts on the MIQ
modules (stack mounting). Clean
any dirty contacts. Carefully bend
back contact springs that have been
pressed flat or bent (pay attention to
sufficient spring tension)