47
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
10
One or several
actuators do not
react to an increase
of the withdrawal
quantity
Withdrawal quantity
for the next switching
point has not been
reached
Check switching
points
– Select flow volume
display in the
status menu of all
controllers
– Increase with-
drawal quantity
– Check opening
points of the
actuators (total
volume flow of
approx. 20/25/30
l/min). Time delay
has to be taken
into account!
As long as the withdrawal
quantity for the next switching
point has not been reached,
function is ok, no solution
required
Manual override
buttons engaged
Visual test of the
manual override
buttons at the
actuators
Short operation of each
individual manual override
button
(see installation
instructions paragraph 6.3)
Flow sensor VFS
10-200 installed in
the wrong
flow direction
Visual test (direction
arrow on the flow
sensor)
Install flow sensor in the
common cold water supply pipe
in the correct direction of flow
(installation instructions
chapters 4 and 6)
Flow sensor
VFS 10-200 defective.
Pressure impacts
during filling may
cause damage to the
sensor diaphragm
(installation instructions
paragraph 8.1)
Although all
previous solutions
regarding the
reaction of the
actuators have
been completed,
there is still no
function
Replace flow sensor
VFS 10-200 with
due
consideration of
the notes
regarding installation, electrical
installation and initial operation
in the installation instructions
(chapters 6 to 8)
11
No actuator reacts
to a modification
of the withdrawal
quantity
Wrong connection of
the grounding cable
of the flow sensor
VFS 10-200
Visual test
grounding cable
Observe notes in the installation
instructions (paragraph 7.4)
and connect grounding cable
according to the instructions.
(Do not connect to plastic pipes,
insulated pipe clamps in plastic
dowels etc….)
Actuators open and
close uncontrollably
12
Actuators open and
close uncontrollably
230V/24V/5V cables
and sensor cable laid
in a bundle.
Visual test
Separate live cables from the
common bundle and lay them
individually at a sufficient
distance to the sensor cables.
See installation instructions
chapter 7
13
Flow sensor VFS
10-200 without
function
Reversed direction of
flow
Visual test
Install in the direction of flow
See installation instructions
chapter 6
Error during initial
operation (pressure
impacts during filling)
Correct function
with replaced part?
Replace flow sensor
See installation instructions
chapter 8
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