49
Diagnosis and troubleshooting
cascade control set “Regumaq K”
(Accessories and spare parts see chapter 13)
Consecutive
number
Error indication
Possible reason
Detection,
control option
Solution
17
Actuator does not
travel the complete
90° angle
or
actuator moves
slowly first and
then faster
Mechanical limit stop
of the actuator set
incorrectly
Visual test, keep
acknowledgement
button pressed and
move the actuator
back and forth by
hand several times
Set limit stop correctly and
press the “Adaptation” key
for at lest 5s
Other obstacle limits
the possible travel
angle or impedes the
rotary movement
Remove obstacle or
sluggishness and press the
“Adaptation” key for at least 5s
18
Installation with
external circulation
pump: several
actuators are in the
“open” position
during circulation
operation with
no water being
drawn off
Circulation return
connected to the
common cold water
supply pipe in the
flow direction in
front of the flow
sensor VFS 10-200
Visual test
Connection according to
installation instructions system
example 4.6
Divide the circulation return
between the individual stations
and connect it to the cold water
supply pipe between the
cascade ball valve and the
station with the help of a check
valve and T-piece
Connection of the common
circulation return behind the
VFS 10-200. The following
functions cannot be realised
in this simplified variant:
– thermal disinfection
– temperature independent
return layering via the
switching module
Observe
note in the
installation
instructions (chapter 4-end and
paragraph 7.6):
“All connection options call for
a limitation of the external
circulation pump to a maximum
output of 25 l/min. per fresh
water station!”
19
Continuously
fluctuating volume
flow measurement
in a fresh water
station during
operation with an
external circulation
pump
Installation option
with external
circulation pump
without using the
pipework set and no
check valves installed
in the circulation
return to the stations.
Visual test
Observe
notes regarding the
mentioned installation option
in the
installation instructions
(end chapter 4)
20
Insufficient useable
cable length
When planning the installation
dimensions, the notes in the
installation instructions
must be
observed (chapter 4, chapter 7.
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