Wilo Tagus Vac User manual

Pioneering for You
Tagus Vac
Pioneering for You
en Installation and operating instructions
fr Notice de montage et de mise en service
es Instrucciones de instalación y funcionamiento
tr  Montajvekullanmakılavuzu
pl Instrukcjamontażuiobsługi
hu  Beépítésiésüzemeltetésiutasítás
ro  Instrucţiunidemontajşiexploatare
bg  Инструкциязамонтажиексплоатация
2200596-Ed. 02/2018-11-Wilo

en Installation and operation instructions 9
fr Notice de montage et de mise en service 37
es Instrucciones de instalación y funcionamiento 65
tr Montajvekullanmakılavuzu 93
pl Instrukcjamontażuiobsługi 121
hu Beépítésiésüzemeltetésiutasítás 149
ro Instrucţiunidemontajşiexploatare 177
bg Инструкция за монтаж и експлоатация 205

11Installation and operating instructions TagusVac 7-30
English
1. General 12
1.1 About this manual 12
1.2 Other supplied documentation 12
1.3 Use of Wilo products 12
1.4 Further help and information 12
2. Safety 12
2.1 Intended use 12
2.2 Important information 12
2.3 Signs in this manual 12
2.4  Specications 13
2.5  Safetydevices 13
2.5.1  Avoidingexcessivepressure 13
2.5.2  Avoidingexcessivetemperature 13
2.6  Signsontheautomat 13
3. Description 14
3.1 Component overview 14
3.2 Controller SCU 16
3.3 Working principle 16
3.3.1 Deaeration 16
3.3.2 Make-up operation 17
4. Transport and storage 17
4.1 Transport 17
4.2 Storage 17
5. Installation 18
5.1 Prepare for installation 18
5.2 Ambient conditions 18
5.3 Hydraulic installation 18
5.4 Electrical installation 19
5.5 Basic electrical connections 20
6. Startup controller 21
6.1 Controller menu structure 21
6.2 Menu symbols 21
6.3 Working principle controller 22
6.4  Controllerinputs 23
7. Maintenance and troubleshooting 24
7.1 Before maintenance 24
7.2  Aerapowerfailure 24
7.3 Maintenance interval 24
7.4 Change the automat for water treatment 24
7.5 Error messages 25
8. Disposal 27
9.  Technicalspecications 28
10. Commissioning 29
10.1  CommissioningTagusVac7-30 29
10.2 Parameterisation for commissionning 29
11. Items of the hardware and
parameter menu 29
11.1 Operating modes 29
11.1.1 Fast/Turbo 29
11.1.2 Normal 29
11.1.3  Hand 30
11.2  Controlmodes 30
11.2.1  Level-controlled(%) 30
11.2.2  Pressure-controlled(P) 30
11.2.3  Fillingo 30
11.3  Monitoring 30
11.3.1  Make-upquantity(monitoring) 30
11.3.2  Pressuremonitoring 30
11.3.3 Monitoring of quantity of water
   tobetreated 31
12. Menudescriptions 31
12.1  Hardwaremenu 31
12.2  Parametermenu 32
12.3  Servicemenu 34
13. Examples 35
13.1  TagusVac7-30inaheatingsystem
   withreturnow 35
13.2  TagusVac7-30inaheatingsystem
   withoutreturnow 35

English
12 WILO 07/2018
1. General
1.1 About this manual
This manual includes technical
specications,instructionsand
explanations that helps to use this automat
safely.Read and understand all the
instructionsbeforeyoutransport,install,
commission,restart,operateormaintain
the automat.
1.2 Other supplied documentation
General information of additional
components,suchasthepumpandthe
sensors,isincludedinthismanual.If
additionaldocumentationissupplied,also
follow the instructions in those.
1.3 Use of Wilo products
According to order or execution
complementary documentations can be
added. Follow the positions performed in
the dispatch papers.
1.4 Further help and information
Contact your local supplier for additional
services as:
• Training.
• Maintenance agreements.
• Service contracts.
• Repairs and improvements.
2. Safety
2.1 Intended use
The automat is designed for deaerating and
feeding make-up water in closed heating
and in cooling water systems. The automat
isnotdesignedfortheinitialllingorre-
llingofsystems.
2.2 Important information
The automat has safety devices intended
to prevent injury and damage. Use the
automat in the following way:
• Have the installation be carried out by
qualiedpersonnel.
• Comply with local legislation and guideli-
nes.
 •Donotmakemodicationstotheautomat
without prior written permission of Wilo.
• Make sure that all automat covers and doors
are closed when operating the automat.
• Do not touch live voltage. The sensor units
and the capacity pressure sensors operate
with extra low safety voltage.
Wilo shall not be liable for any losses
arising from the non-observance of safety
conditions or as a consequence of the
disregard of standard precautionary
measures when performing such services
astransport,installation,commissioning,
re-starting,operation,maintenance,
testingandrepair,evenintheeventthat
these are not expressly described in these
instructions.
2.3 Signs in this manual
Identiesahazardthatcouldleadto
personal injury including death/damage to
theautomat,damagetootherequipment
and/or environmental pollution.
Identiesanelectrichazardthatcouldlead
to personal injury including death/damage
totheautomat,damagetootherequipment
and/or environmental pollution.
Earthing
Important information

13Installation and operating instructions Tagus Vac 7-30
English
2.4 Specications
The construction of the automat is designed
in accordance with the norms DIN EN 12828.
2.5 Safety devices
The automat does not contain any safety
components that prevent that the operation
pressure and the operation temperature
range are exceeded or go below a limit.
Install components for the limitation of
pressure and temperature in the system.
2.5.1 Avoiding excessive pressure
Appropriate safety valves that prevent
that the maximum operation pressure is
exceeded:
• Open not later than the maximum allowable
working pressure is reached.
 •Canconducttheoccurringvolumeow
(includingthemaximumpossiblerelling
volume) up to the 1.1-fold of the maximum
operation pressure;
 •Haveaprovenreliabilityorarecertied.
Do not narrow the inlet or outlet piping of
the safety valve.
2.5.2 Avoiding excessive temperature
Appropriate safety components:
• Guarantee that the operation temperature
range is not exceeded at any point of the
system;
• Are approved and tested on operation
safety.
Activate the pressure and temperature
safety devices and check them regular on
proper working.
2.6 Signs on the automat
The signs on the automat are part of the
safety provisions. Do not cover or remove
the signs. Inspect regularly if the signs are
present and legible. Replace or repair signs
that are illegible or damaged.
On the type plate the following product
information can be found:
ATagus Vac
BAutomat serial number
CPermissible working overpressure
DPermissible working temperature
Do not use the automat when the
specicationsonthetypeplatedierfrom
the order.
Entgasungsautomat Tagus Vac XX
Art. Nr.
Hersteller-Nr.:
Manufacturer-No.:
zul. Betriebsüberdruck: 8 Bar
70 oC
max. Betriebstemperatur:
Permissible working temperature:
Permissible working overpressure:
A
C
B
D

English
14 WILO 07/2018
3. Description
3.1 Component overview
1
2
3
4
5
6
7 8 9
12
14
13
11
10
8 9
16
15
ENA 7-20
ENA 30
Tagus Vac 7-20
1Vent. device
2 Pressure gauge
 3 SCUcontroller
4 Vacuum tank
5 Vacuum pressure switch
6 Solenoid valve N.O.
7 Float switch
8 Pressure sensor
9ConnectiontosystemRp3/4”
 10 ConnectionfromsystemRp3/4”*
11 Terminal box pump 1
12 Pump 1
 13 ConnectionforrellRp3/4”
14 Solenoid valve N.C.
15 Terminal box pump 2
16 Pump 2
 * with strainer

15Installation and operating instructions Tagus Vac 7-30
English
1
2
3
4
5
6
7 8 9
12
14
13
11
10
8 9
16
15
ENA 7-20
ENA 30
Tagus Vac 30
8 Pressure sensor
9ConnectiontosystemRp3/4“
15 Terminal box pump 2
16 Pump 2

English
16 WILO 07/2018
3.3.1 Deaeration
Fordeaeratingthewater,thesystemwater
is drawn in via a bypass from the return line
of the system (H). The water is run through
aowregulator(G)andthestrainer(F)into
the deaeration tank (C). It is subjected to
a vacuum during the cyclic running of the
pump (D) and passed through a ring packing
(E).Asaresultoftheloweredpressure,and
thelargesurfaceoftheringpacking,air
dissoleves from the water.
Whenthepumpswitcheso,the
replenishingmediumowingintothetank
causes the pressure in the tank to increase
to the level of the system pressure so that
the air which has accumulated above the
water level is discharged via the vent. device
(A).Whilethepumpisrunning,thewater
quantity supplied into the tank is returned
via a bypass line to the return branch (B) of
the system.
• Fast deaeration mode (Fast = Turbo):
An interval during which the pump is run-
ning (vacuum is forming) alternates with an
interval during which the air is discharged
(pump is stopped).
• Normal deaeration mode:
An additional pause is added between
the end of the evacuation interval and
the starting of the pump. This additional
interval can be selected via a parameter
withinxedlimits.Uponexpiryofthe
deaerationinterval,thesystemchanges
tothenormaldeaerationmode,which
then takes place continuously. The
P
P
H
F
G
C
A
B
D
E
1
2
3
4
5
67
3.2 Controller SCU
1Controlpanelforthecontroller,graphical
display,LEDforerrordisplay,selectorswitch
(click and roll)
 2 Powerswitch,ON:ashesred
 3 InternalfuseF1:T16A250V
 4 InternalfuseF2:T3,5A250V
 5 Hardwarerelease,servicemenuE2
6 Terminal bars for
• Electric supply;
• sensors;
• Impulse water counter;
 •Externalactivationforrellingprocess;
• Collective malfunction message;
• Pump.
7 Interface RS485.
3.3 Working principle
The automat serves primarily as an active
deaerating device. In addition as a make-up
deviceforre-llingthewaterlossesina
system.
P
P
H
F
G
C
A
B
D
E
1
2
3
4
5
67

17Installation and operating instructions Tagus Vac 7-30
English
4. Transport and storage
4.1 Transport
Theshippingpaperslistalltheitems,
such as equipment and documentation.
Ensure that the delivery is complete and
not damaged. The automats are packed
horizontallyondisposablepalletsandare
fully assembled.
Identify the items that are missing or not
correctly delivered. Read the general terms
and conditions in the shipping papers.
 •Transportthepalletshorizontally.
 •Litheautomatjustslightly.
Makesurethattheliingdevicecansupport
theautomat.Forweightanddimensions,
refertochapter9:Technicalspecications.
4.2 Storage
Make sure that the storage space meets the
ambient conditions. Refer to section 6.2.
•Takecareforanevenoor.
Do not stack up.
normal deaeration mode is interrupted
by a selectable pause (by default 06.00
p.m. - 08.00 a.m.). The beginning of the
next deaeration cycle taking place in the
normal deaeration mode is indicated via a
countdown in the Process menu.
3.3.2 Make-up operation
The make-up water is supplied in a
pressure-controlled or level-controlled
mode. The automat is set by default to
pressure-controlledrelling(ifadiaphragm
expansion vessel is used).
• Pressure-controlled supply:
The system is equipped with a pressure
sensor (P) for sensing the pressure. The
make-up activating pressure should be
Po*+0.2bar.Themake-updeactivating
pressure must be at least 0.1 bar higher
than the make-up activating pressure.The
make-upwaterowrateorfeedtimecanbe
monitored,ifthesystemisttedwithalitres
counter. The pump (D) must be automa-
tically stopped cyclically during pressu-
re-controlledrelling,andtheactualsystem
pressuremustbecheckedand,ifnecessary,
additional water must be supplied until the
make-up deactivating pressure is reached.
• Level-controlled supply:
  Inthiscase,make-upwaterissupplied
as long as the external make-up request
isactiveandtheow-rateandtime
monitoring feature of the automat allows
making up to take place.
It is possible to deactivate the make-up
function. Refer to chapter 6.1.It is possible
to deactivate the make-up function. Refer to
chapter 6.1.
  *Po = P Static + P Steam

English
18 WILO 07/2018
5. Installation
5.1 Prepare for installation
Make sure that the surface can support the
maximumweightoftheautomat,including
the water. Refer to chapter 9: Technical
specications.
 •Theautomatmaynotbeaectedby
external forces.
• No dirt may get into the automw at and its
accessories.
 •Installshut-odevicestothedrinkingwater
net on-site.
• Plan enough free space around the automat
for maintenance work.
 •Notetheeectiveregulationsregarding
theuseandtheinstallationlocationand,if
necessary,informtheresponsibletesting
andcerticationbodiespriortothelaunch
of the system.
5.2 Ambient conditions
Make sure
• that the automat is level;
 •thattheautomatisinstalledinaclosed,dry
and frost-free room;
• to maintain the minimum distances as
indicated;
• that the atmosphere does not contain
electrically conducting gases or high
concentrations of dust and vapors. Risk
of explosion when there are combustible
gases;
• that the vicinity is clean and well lit.
- Relative humidity: not condensating.
- Free of vibrations.
- Free from heat- and solar radiation.
• that the automat is free from additional
loads.
> 0,5 m
> 0,5 m
> 0,5 m
< 80%
> 0 °C ... 40 °C (Tagus Vac 7)
45 °C (Tagus Vac 10-30)
5.3 Hydraulic installation
• Installtheshut-odeviceson-siteinfrontof
the tube joints.
• Only work on non-pressurised and cooled-
down pressure joints.
 •Connectthesupplylinetotherelling
supply.
 •Ifnecessary,installadirttrapatthedrinking
water joint (0.2 mm).
• The minimum nominal diameter for the
installation line of the system and the
supply line is DN 20.
• Connect the return line of the system to the
inletoftheTagusVac7-30.















19Installation and operating instructions Tagus Vac 7-30
English
• Connect the supply line of the system to the
pressuresideoftheTagusVac7-30.







5.4 Electrical installation
There can be life voltage on the terminal
bars even when the main power supply is
disconnected. Make sure all external power
supplies(e.g.externalrellequipment)are
also disconnected from the automat.
 •Switchothepowerswitchonthe
controller SCU.
 •Pullthepowerplugorswitchoexternal
separators and secure these against a
restart.
• Unscrew the protective cover of the terminal
box.
• The descriptions of the terminal bars are on
the inside of the protective cover.















English
20 WILO 07/2018
5.5 Basic electrical connections
Tagus Vac 7 Tagus Vac 10 Tagus Vac 20 Tagus Vac 30
Nominal voltage 230V:+6%;-10%;50Hz:+1%;-1%
Nominal current 2.77 A 5.3A 7.2 A 10.6 A
Nominal power 0.62 kW 1.1 kW 1.51 kW 2.2 kW
Safety current 10 A 16 A
Protection type IP55 IP54 (pressure sensor IP65)
Neverconnectterminal11+12and21+22
atthesametime.Itwilldestructtherell
the SCU controller or the pressure holding
control.
28 29 30 31 32 33 34 35 36
27 26 25 24 9 8 7 6 5 4 3 2 1
10 11 12 13 14 15 16 17 18
RS485
RS485
20 1923 22 21
Common
failure
External
refill
(for potential
free contact)
INPUT
INPUT
SELV
OPTIONAL
C
F
G
D
Solenoid valve
Solenoid valve
Pump 1
Impuls water meter
Pressure sensor
E
Pump 2 (Tagus Vac 30)
Vacuum pressure switch
Float switch
A
B
External
(Refill 230 V)
230 V
50 Hz
N.C.
N.O.
A C DB
E
F
G
SELV:
Safety Extra
Low Voltage
* Recommended value; Line safety switch (C).

21Installation and operating instructions Tagus Vac 7-30
English
6. Startup controller
6.1 Controller menu structure
6.2 Menu symbols
Ku1Ku2 FL1 FL2
Process display
A
A
Process display
System pressure Control mode
Operating mode
total
Filling quantity
Error list, activ (Acknowledge)
(Symbols) Error
10
10
11
12
Back
Back
Code menu
Selection menu Selection menu 1
Service menu
Service menu
Project number
Software version
Start
Maintenance
Error list (Passive)
Value statistics
Operating hours
Refill statistics
Duration of turbo
Pause normal degas.
Degassing
System pressure
Special system press
Water treatment
Litres counter
Filling quantity
Time, Date
Other
Other internal
ID-Number
Language
Litres counter
Water treatment
Control mode
Operating mode
Sensor
Motor protection
Back
Back
Common failure
Change entry code
Back
Parameter menu
Parameter menu
Hardwaremenu
Hardwaremenu
ID No ID number available. Controller not configured. Pump.
Denied, not installed.
Outside parameter limits. Float switch.
P
Refill is pressure controled. Entry confirmed.
Code required. Programming mode, enter.
%Refill is level controled. Test mode.
Solenoid valve. Warning.
No intervention possible. Save error. Settings not saved.
Operating mode, view only. Wait.
Vacuum switch. External refiil signal is connected (level controled
operation only).
Ku1Ku2 FL1 FL2
Process display
A
A
Process display
System pressure Control mode
Operating mode
total
Filling quantity
Error list, activ (Acknowledge)
(Symbols) Error
10
10
11
12
Back
Back
Code menu
Selection menu Selection menu 1
Service menu
Service menu
Project number
Software version
Start
Maintenance
Error list (Passive)
Value statistics
Operating hours
Refill statistics
Duration of turbo
Pause normal degas.
Degassing
System pressure
Special system press
Water treatment
Litres counter
Filling quantity
Time, Date
Other
Other internal
ID-Number
Language
Litres counter
Water treatment
Control mode
Operating mode
Sensor
Motor protection
Back
Back
Common failure
Change entry code
Back
Parameter menu
Parameter menu
Hardwaremenu
Hardwaremenu
ID No ID number available. Controller not configured. Pump.
Denied, not installed.
Outside parameter limits. Float switch.
P
Refill is pressure controled. Entry confirmed.
Code required. Programming mode, enter.
%Refill is level controled. Test mode.
Solenoid valve. Warning.
No intervention possible. Save error. Settings not saved.
Operating mode, view only. Wait.
Vacuum switch. External refiil signal is connected (level controled
operation only).

English
22 WILO 07/2018
6.3 Working principle controller
Start up
 •Switchoaninstalledrellequipment.
Closetheinowvalves.
• Switch on the controller (D).
ADisplay
BError LED
CNavigation wheel
DON/OFF switch controller
Use the navigation wheel (C) to navigate
throughthemenusantoconrmtheinput.
The display (A) shows the menus. In case of
errors the error LED (B) is on.
• Hold down the navigation wheel for two
secondstogototheprocessdisplay,
whatever the cursor position.
* Turbo = Fast
A B C D
System
-h Turbo
--- bar
p
------ Liter ---
Start
--:--
*
2 sec...
System
-h Turbo
--- bar
p
------ Liter ---
Start
--:-- Error
-h Turbo
--- bar
p
------ Liter ---
Start
--:--
*
*
A B C D
System
-h Turbo
--- bar
p
------ Liter ---
Start
--:--
*
2 sec...
System
-h Turbo
--- bar
p
------ Liter ---
Start
--:-- Error
-h Turbo
--- bar
p
------ Liter ---
Start
--:--
*
*
• In case of errors the process display
switches from [SYSTEM] to [ERROR] and the
LED is on.
 •Theerrormessages,minimumwaterlevel,
minimum pressure alarm are consistent by
therststartofoperation.
• It is possible to turn the wheel to switch
between [SYSTEM] and [ERROR].
• When [ERROR] is displayed press the wheel
to go to the error list. In case of more than
oneerror,scrollthroughtheerrors.Allerrors
are shown in accordance of appearance.
 •When[SYSTEM]isdisplayed,pressthewheel
to go to the option menu.
* Turbo = Fast
A B C D
System
-h Turbo
--- bar
p
------ Liter ---
Start
--:--
*
2 sec...
System
-h Turbo
--- bar
p
------ Liter ---
Start
--:-- Error
-h Turbo
--- bar
p
------ Liter ---
Start
--:--
*
*

23Installation and operating instructions Tagus Vac 7-30
English
6.4 Controller inputs
 •Whenenteringtheprogrammode,thecontrolforpressuremaintenanceisactive.
 •Thecodewillbeactive5minutesaerlatestinput.
 •Removeallunpermittedloads,supportedobjectsorlateralloadsfromthebasicautomat.
 •Whentheprogrammingprocedureiscompleted,theelectricalpartsoftheTagusVac7-30arereadyforoperation.
B2
System
G5 3
D1
Hardware
Parameter
Service
Back
F4 5
Back
G2
ID number
Language
Litres counter
View
Back Water treatment
Level controlled
Back
G2 1
Deutch
Nederlands
English
Français
F4
System pressure
Special syst.press
Litre/pulse
Water treatment
G2 18
Dansk
Suomi
Maggar
Back
G2 17
Polski
Dansk
Suomi
Maggar
F9
Water treatment
Filling quantity
Time, date
Other
G5
Language
Liters counter
Water treatment
Control mode
F4
Fillcommand on
D2
Hardware
Parameter
Service
Back
X,x bar
Fillcommand on
Save Back
X,x bar
X,x
X,x
Save
19.05.07
10:15:28
Save Back
30.07.07
13:36:00
Save Back
30.07.07
13:36:00
Back Back
30.07.07
13:36:00
Save
(3 sec)
Time and date
Language
Zero Setting
Control mode
Language
Filling pressure
1
Code
"000001"
Start
Back
Press. controlled
Level controlled
G5 4
2
X,x bar
Fillcommand off
F4
X,x
X,x
bar
X,x
Fillcommand on
X,x
X,x
bar
Save Back
Fillcommand off
Fillcommand off
Save Back
X,x bar
X,x
X,x Water treatment
Litre/pulse
Special syst.press
F4
menu
(only for the
first time)
Maintenance
Software version
Projekt no.
E3
(3 sec)
G10
Sensor
Motor prot.
Common failure
Back
Press. controlled
Start
System
D3
Hardwaremenu
Parametermenu
Back
Servicemenu
Back
Start
Date Time
Ku1
E3 2
E3 1
Ku1
Date Time
Back
Start
Save Back
X,x
Enter
System
Start
System pressure

English
24 WILO 07/2018
7. Maintenance and
troubleshooting
• The water and the contact surfaces can be
70 °C or more.
• Wear the required protective clothing.
 •Theoorcanbewetorgreasy.Wear
protective shoes.
7.1 Before maintenance
Disconnect the main power supply.
There can be life voltage on the terminal
bars even when the main power supply is
disconnected. Make sure all external power
supplies(e.g.externalrellequipment)are
also disconnected from the automat.
Release the pressure of vacuum tank
before maintenance.
 7.2 Aerapowerfailure
The programmed parameters of the
controllerdonotchangeaerapower
failure.
• Check the condition of the automat for
integrityaerapowerfailure.
7.3 Maintenance interval
  Conrmmaintenanceintheservicemenu.
Interval Component Activity
Annually TagusVac7-30 •Checkleaktightnessofjoints,pumps
and screw connections.
Ifnecessary,sealortightenthescrew
connections.
Every year before the
peak period
On-site dirt trap in the feed line
Vent. device
• Clean the guards.
• Check the functions.
• Vacuum test.







7.4 Change the automat for water treatment
 •Switchowatertreatmentinthehardware
menu and change the module.
• Adjust the capacity in the parameter menu.
 •Switchon“watertreatment”inthe
hardware menu.

25Installation and operating instructions Tagus Vac 7-30
English
7.5 Error messages
A Necessary,resetpossiblewithinnormaluse
(controlrestartsaerresetting).
B Noduty,automaticresetwithinnormaluse.
Nr Message Description Reset Possible cause Troubleshooting
1Pressure too low System pressure too
low,isoutsideworking
pressure range
B • Leakage
• Pressure-holding value wrongly set
• Wrong admission pressure
• Filling pressure too low
• Eliminate leakage
• Set correct pressure-holding value
•Increasellingpressureuptoworking
pressure range
2Pressure too
high
System pressure too
high,isoutsideworking
pressure range
B•Pumpdoesnotswitcho
• Diaphragm expansion vessel too small/
wrong admission pressure
• Filling pressure too high
• Check control
• Check admission pressure / use larger
diaphragm expansion vessel
•Lowerllingpressuretoworking
pressure range
3Entrycap. too
low
Litres counter does not
supplywateraer
make-up request
A•Nopulsessentfromlitrescounter,
because:
• litres counter defective
• cable not connected
• setting value too low for litres counter
response time
• Replace litres counter
• Connect cable
• Use higher setting value for response
time
5Cycle interval Make-up cycle interval
too short
A • Leakage in system
• False setting value
• Eliminate leakage
6Nr. of cycles Maximum number of
cycles within time
window exceeded
A • Leakage in system
• False setting value
• Eliminate leakage
• Program correct settings
7Fill error Filling without request
(litres counter sends
signalwithoutlling)
A • Leakage
• Solenoid valve don‘t close/defective
• Eliminate leakage
• Replace solenoid valve
8Quantity limit Maximum quantity in a
make-up cycle exceeded
A • Leakage
•Settingvalueforowratereduction
too low
• Eliminate leakage
• Correct the setting value
9Runtime
protection
Maximum time of
make-up cycle exceeded
A • Leakage
•Settingvalueforowratereduction
too low
• Pump doesn‘t deliver
• Eliminate leakage
• Correct the setting value
• Deaerate pump
10 Exchange
module
Soeningmodule
exhausted
A • Module capacity (water treatment)
exhausted
• Replace module
11 Low mA
P-sensor
Interruption of current
loop of pressure
sensor
A • Sensor defective
• Terminal/cable defective
• Replace sensor
• Check/exchange terminal/ cabling
12 High mA
P-sensor
Short-circuit in current
loop of pressure sensor
A • Sensor defective
• Terminal/cable defective
• Short circuit
• Replace sensor
• Check/exchange terminal/ cabling
13 Vacuum error 3timesinsuccession
insuicientvacuumfor
dearation
A • Temperature in return branch higher
than 70 °C
• Pump does not operate continuously
•LeakageinTagusVac7-30
• Vent. device doesn‘t close
• Take steps for ensuring return
temperatures below 70°C!
• Replace pump
•LocateleakageinTagusVac7-30
• Clean or replace vent. Device
14 Level switch
error
Low level B • Vent. device defective
• Strainer / inlet protected
• Valves closed
• Clean or replace vent. Device
• Clean strainer
• Open valves

English
26 WILO 07/2018
Nr Message Description Reset Possible cause Troubleshooting
18 Next
maintenance
Next maintenance due A • Maintenance date reached • Carry out maintenance and enter
‘Maintenance done’ (Service menu)
19 TP motor Motor protection signal
(bimetal contact of
pump) is active (open)
A • Pump overheated • Check temperatures
• Check free running pump
20 Voltage sensor Sensor voltage too low B • Printed circuit board defective • Replace control unit
21 No date/time RTC has no valid time
information
A•Timesettinghasgotlostaer
prolonged disconnection from power
supply
• Enter time and date again
22 Flash error Read error Flash B •Hardware/sowareproblem • Get in contact with service department
23 Flash error Write error Flash B •Hardware/sowareproblem • Get in contact with service department
24 Flash error Reprogramming error
Flash
B•Hardware/sowareproblem • Get in contact with service department
25 Gas sensor
defective
Gas sensor defective A •Malfunctionsinmeasuringsignal,
possible faulty cable connection to SCU
•Checkconnectiontocontroller,
Exchange sensor if necessary
26 Gas sensor,
undervoltage
Signal during
measurement <4mA
A•Sensornotconnected,cabledamage
27 Gas sensor,
overvoltage
Signal during
measurement >20mA
A•Short-circuitincable,signaltoolarge •Testcableconnections,testvent
device,ifnecessarycleanthelters
28 Recurring
indication of
gas value “0”
Several successive
small gas values during
measurement
A • Vent blocked/not working correctly • Check and clean vent device
A Necessary,resetpossiblewithinnormaluse
(controlrestartsaerresetting).
B Noduty,automaticresetwithinnormaluse.