Page 1
For the operator
Operating instructions
Operating instructions
Publisher/Manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Tel. +49 21 91 18‑0 Fax +49 21 91 18‑2810
info@vaillant.de www.vaillant.de
ecoTEC plus
VU, VUW, VUI ..6/5-5
GB, IE
Page 2
Contents
Contents
1 Safety .................................................................... 3
1.1 Action-related warnings ......................................... 3
1.2 Intended use.......................................................... 3
1.3 General safety information .................................... 3
2 Notes on the documentation .............................. 5
2.1 Observing other applicable documents ................. 5
2.2 Storing documents................................................. 5
2.3 Applicability of the instructions .............................. 5
3 Product description............................................. 5
3.1 Product design....................................................... 5
3.2 Control elements.................................................... 5
3.3 Displayed symbols................................................. 6
3.4 Information on the identification plate.................... 6
3.5 Serial number ........................................................ 7
3.6 CE label ................................................................. 7
3.7 Energy Saving Trust Endorsed Products .............. 7
3.8 Hot Water Association ........................................... 7
3.9 Benchmark............................................................. 7
4 Operation.............................................................. 7
4.1 Operating concept ................................................. 7
4.2 Basic display.......................................................... 8
4.3 Menu display.......................................................... 8
4.4 Adjustment and display levels ............................... 8
4.5 Cabinet-type casing............................................... 8
4.6 Opening the isolator devices ................................. 8
4.7 Starting up the product .......................................... 8
4.8 Switching on the product ....................................... 8
4.9 Setting the language.............................................. 8
4.10 Setting the heating flow temperature ..................... 9
4.11 Setting the hot water temperature ......................... 9
4.12 Switching Comfort mode on and off ...................... 9
4.13 Activating the shift-load cylinder ............................ 9
4.14 Setting the target cylinder temperature ............... 10
4.15 Switching off the product's functions ................... 10
4.16 Guaranteeing the correct filling pressure of the
heating system..................................................... 10
4.17 Protecting the heating installation against
frost...................................................................... 11
5 Troubleshooting ................................................ 11
5.1 Detecting and rectifying faults ............................. 11
5.2 Calling up (Live monitor) status codes ................ 11
6 Care and maintenance ...................................... 11
6.1 Maintenance ........................................................ 11
6.2 Caring for the product .......................................... 11
6.3 Reading maintenance messages ........................ 11
6.4 Checking the condensate drain pipework and
tundish ................................................................. 11
7 Decommissioning.............................................. 12
7.1 Temporarily decommissioning the product.......... 12
7.2 Permanently decommissioning the product......... 12
8 Recycling and disposal..................................... 12
9 Guarantee and customer service..................... 12
9.1 Guarantee............................................................ 12
9.2 Customer service................................................. 12
Appendix ............................................................................13
A Operator level – overview ................................. 13
B Status codes – Overview .................................. 13
C Troubleshooting ................................................ 14
2 Operating instructions ecoTEC plus 0020245033_01
Page 3
Safety 1
1 Safety
1.1 Action-related warnings
Classification of action-related warnings
The action-related warnings are classified in
accordance with the severity of the possible
danger using the following warning signs and
signal words:
Warning symbols and signal words
Danger!
Imminent danger to life or risk of
severe personal injury
Danger!
Risk of death from electric shock
Warning.
Risk of minor personal injury
Caution.
Risk of material or environmental
damage
1.2 Intended use
There is a risk of injury or death to the user or
others, or of damage to the product and other
property in the event of improper use or use
for which it is not intended.
The product is intended as a heat generator
for closed heating installations and for hot
water generation.
Intended use includes the following:
– observance of the operating instructions
included for the product and any other
system components
– compliance with all inspection and main-
tenance conditions listed in the instructions.
This product can be used by children aged
from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge if
they have been given supervision or instruction concerning use of the product in a safe
way and understand the hazards involved.
Children must not play with the product.
Cleaning and user maintenance work must
not be carried out by children unless they are
supervised.
Any other use that is not specified in these
instructions, or use beyond that specified in
this document shall be considered improper
use. Any direct commercial or industrial use
is also deemed to be improper.
Caution.
Improper use of any kind is prohibited.
1.3 General safety information
1.3.1 Installation by competent persons only
The installation, inspection, maintenance
and repair of the product, as well as the gas
ratio settings, must only be carried out by a
competent person.
1.3.2 Danger caused by improper operation
Improper operation may present a danger to
you and others, and cause material damage.
▶ Carefully read the enclosed instructions
and all other applicable documents, particularly the "Safety" section and the warnings.
▶ Only carry out the activities for which in-
structions are provided in these operating
instructions.
1.3.3 Risk of death from escaping gas
What to do if you smell gas in the building:
▶ Avoid rooms that smell of gas.
▶ If possible, open doors and windows fully
and ensure adequate ventilation.
▶ Do not use naked flames (e.g. lighters,
matches).
▶ Do not smoke.
▶ Do not use any electrical switches, mains
plugs, doorbells, telephones or other communication systems in the building.
▶ If it is safe to do so, close the emergency
control valve or the main isolator.
▶ If possible, close the gas isolator cock on
the product.
▶ Warn other occupants in the building by
yelling or banging on doors or walls.
▶ Leave the building immediately and ensure
that others do not enter the building.
▶ Notify the gas supply company or the
Emergency Service Provider
+44 (0) 800 111999 by telephone once you
are outside of the building.
0020245033_01 ecoTEC plus Operating instructions
3
Page 4
1 Safety
1.3.4 Risk of death due to a blocked or leaking flue gas pipe
What to do if you smell flue gas in the property:
▶ Open all accessible doors and windows
fully to provide ventilation.
▶ Switch off the product.
▶ Inform a competent person.
1.3.5 Risk of death due to explosive and flammable materials
▶ Do not use or store explosive or flammable
materials (e.g. petrol, paper, paint) in the
installation room of the product.
1.3.6 Risk of death due to changes to the product or the product environment
▶ Never remove, bridge or block the safety
devices.
▶ Do not tamper with any of the safety
devices.
▶ Do not damage or remove any seals on
components.
▶ Do not make any changes:
– The product itself
– to the gas, air, water and electricity sup-
plies
– to the entire flue gas installation
– to the entire condensate drain system
– to the expansion relief valve
– to the drain pipework
– to constructional conditions that may
affect the operational reliability of the
product
▶ Ensure that the supply of combustion air is
always free of fluorine, chlorine, sulphur,
dust, etc.
▶ Ensure that no chemical substances are
stored at the installation site.
1.3.9 Risk of material damage caused by frost
▶ Ensure that the heating installation always
remains in operation during freezing conditions and that all rooms are sufficiently
heated.
▶ If you cannot ensure the operation, have a
competent person drain the heating installation.
1.3.10 Risk of injury and material damage
due to maintenance and repairs
carried out incorrectly or not
carried out at all
▶ Never attempt to carry out maintenance
work or repairs on your product yourself.
▶ Faults and damage should be immediately
rectified by a competent person.
▶ Adhere to the maintenance intervals spe-
cified.
1.3.7 Risk of poisoning caused by insufficient supply of combustion air
Conditions: Open-flued operation
▶ Ensure that there is a sufficient supply of
combustion air.
1.3.8 Risk of corrosion damage due to unsuitable combustion and room air
Sprays, solvents, chlorinated cleaning
agents, paint, adhesives, ammonia compounds, dust or similar substances may lead
to corrosion on the product and in the air/flue
pipe.
4 Operating instructions ecoTEC plus 0020245033_01
Page 5
Notes on the documentation 2
1
2
3
1234
5
2 Notes on the documentation
2.1 Observing other applicable documents
▶ You must observe all operating instructions enclosed with
the system components.
2.2 Storing documents
▶ Keep this manual and all other applicable documents
safe for future use.
2.3 Applicability of the instructions
These instructions apply only to:
Product article number
VU 126/5-5 (H-GB)
ecoTEC plus 612
VU 156/5-5 (H-GB)
ecoTEC plus 615
VU 186/5-5 (H-GB)
ecoTEC plus 618
VU 186/5-5 (P-GB)
ecoTEC plus 618
VU 246/5-5 (H-GB)
ecoTEC plus 624
VU 306/5-5 (H-GB)
ecoTEC plus 630
VU 306/5-5 (P-GB)
ecoTEC plus 630
VU 386/5-5 (H-GB)
ecoTEC plus 637
VUW 196/5-5 (H-GB)
ecoTEC plus 825
VUW 246/5-5 (H-GB)
ecoTEC plus 832
VUW 246/5-5 (P-GB)
ecoTEC plus 832
VUW 286/5-5 (H-GB)
ecoTEC plus 838
VUW 306/5-5 (H-GB)
ecoTEC plus 835
VUI 286/5-5 (H-GB)
ecoTEC plus 938
Article number
0010021828 41-694-20
0010021829 41-694-21
0010021830 41-694-22
0010021831 41-694-23
0010021832 41-694-24
0010021833 41-694-25
0010021834 41-694-26
0010021835 41-694-27
0010021823 47-044-83
0010021824 47-044-84
0010021825 47-044-85
0010021826 47-044-86
0010021822 47-044-82
0010021827 47-044-87
Gas Council
Number
3 Product description
3.1 Product design
1 Control elements
2 Plate with serial number
on the rear
3.2 Control elements
3 Front flap
1 On/off button
2 Built-in controller (ac-
cessory)
0020245033_01 ecoTEC plus Operating instructions 5
3 Fault clearance button
4 Operating buttons
5 Display
Page 6
3 Product description
50
F. 0 1
1
2
3
4
8
7
5
6
bar
F. X X
3.2.1 Operator control panel
Symbol Meaning Explanation
Comfort mode active – Permanently on:
Maintenance required Information on the main-
Summer mode active
Heating mode is
switched off
Burner anti-cycling time
is active
Fault in the product Appears instead of the
Comfort mode active
– Flashing: Comfort
mode active, burner
on
tenance message in the
"Live Monitor"
To avoid the need for
frequent switching on
and off (increases the
product's working life).
basic display, may be
an explanatory plain text
display.
3.4 Information on the identification plate
The identification plate is mounted on the underside of the
product in the factory.
Information on the
identification plate
Meaning
Read the instructions.
1 Current heating flow
temperature, filling
pressure of the heating
installation, operating
mode, fault code or
additional information
2 Current assignment of
the right-hand selection
button
3 Left- and right-hand
selection buttons
4
5 Maximum output op-
6 Access to the menu for
7 Current assignment of
8 Active operating status
and button
eration (for chimney
sweeps only)
additional information
the left-hand selection
button
3.3 Displayed symbols
Symbol Meaning Explanation
Burner operating correctly
Current filling pressure of
the heating system
The dashed lines show
the permitted range
Hot water generation
active
Heating mode active – Permanently on:
Burner on
– Permanently on:
Filling pressure in
the permitted range
– Flashing: Filling
pressure outside
the permitted range
– Permanently on:
Draw-off mode before burner is on
– Flashing: Burner on
in draw-off mode
Heating mode heat
requirement
– Flashing: Burner on
in heating mode
VU… Vaillant gas-fired wall-hung boiler for
VUW…, VUI… Vaillant gas-fired wall-hung boiler for
..6/5-5 Calorific value power/product generation
ecoTEC plus Product designation
2H, G20 – 20 mbar
(2.0 kPa)
ww/yyyy Date of manufacture: Week/year
Cat. Approved gas boiler category
Types Approved units of type
PMS Permissible total overpressure in heating
PMW Permissible total overpressure during hot
T
max.
ED 92/42 Current efficiency directive fulfilled with
V Hz Mains voltage and mains frequency
W Max. electrical power consumption
IP Level of protection
P Nominal heat output range
Q Heat input range
D Nominal hot water draw-off rate
heating
heating and hot water generation
equipment
Gas group and gas connection pressure
as set at the factory
mode
water generation
Max. flow temperature
4* rating
Heating mode
Hot water generation
Bar code with serial number,
7th to 16th digit = product article number
6 Operating instructions ecoTEC plus 0020245033_01
Page 7
Operation 4
3.5 Serial number
The serial number is located on a plastic plate behind the
front flap.
3.6 CE label
The CE label shows that the products comply with the basic
requirements of the applicable directives as stated on the
identification plate.
The declaration of conformity can be viewed at the manufacturer's site.
3.7 Energy Saving Trust Endorsed Products
Only the most energy efficient products can carry the
‘Energy Saving Trust Endorsed Product’ brandmark making
it easy for consumers to choose products that have met strict
energy performance criteria.
Available for: Boilers, Heating controls and chemical inhibitors, the Energy Saving Trust endorsed product brandmark
gives consumers confidence that a product will cost less to
run, help lower energy bills and reduce carbon emissions.
About the Energy Saving Trust
Energy Saving Trust is an independent and impartial organisation that provides trusted energy saving advice to empower millions of people to lead affordable, low energy lifestyles. For more information visit energysavingtrust.org.uk
3.8 Hot Water Association
Vaillant is a full member of the Hot Water Association and
promotes the scheme in association with its cylinder range.
Details are available on the web site www.vaillant.co.uk
3.9 Benchmark
Vaillant is a licensed member of the Benchmark Scheme.
Benchmark places responsibilities on both manufactures
and installers.
The purpose is to ensure that customers are provided with
the correct equipment for their needs, that it is installed,
commissioned and serviced in accordance with the
manufacturer’s instructions by a competent person approved
at the time by the Health and Safety Executive and that it
meets the requirements of the appropriate Building
Regulations.
The Benchmark Checklist can be used to demonstrate
compliance with Building Regulations and should be
provided to the customer for future reference.
Installers are required to carry out installation,
commissioning and servicing work in accordance with the
Benchmark Code of Practice which is available from the
Heating and Hotwater Industry Council who manage and
promote the Scheme.
Benchmark is managed and promoted by the Heating and
Hotwater Industry Council.
For more information visit www.centralheating.co.uk
4 Operation
4.1 Operating concept
Operator
control
element
+ at
the same
time
or
The current function of the and buttons is shown on
the display.
Adjustable values are always displayed as flashing.
You must always confirm a change to a value. Only then
is the new setting saved. You can press to cancel an
operation at any time.
Function
– Setting the hot water temperature
– Cancelling the activation of an operating
mode
– Cancelling a change to a set value
– Going one selection level higher
– Setting the heating flow temperature
– Reading the system pressure
– Activating the comfort mode
– Activating the operating mode
– Confirm setting
– Going one selection level lower
– Calling up the menu
– Reducing or increasing the set value
– Scrolling through menu entries
0020245033_01 ecoTEC plus Operating instructions
7
Page 8
4 Operation
4.2 Basic display
50
The basic display shows the current condition of the product.
If you press a selection button, the activated function is displayed in the display.
The functions that are available depend on whether a controller is connected to the product.
You can switch back to the basic display by:
–
Pressing to exit the selection levels
– Not pressing any button for longer than 15 minutes.
If there is an error message present, the basic displays
switches to the error message.
4.3 Menu display
4
Xxxx
Xxxxxxxxxxx
3
Xxxx Xxxxxxx
Xxxxxxxxxx
xxxxxx Xxxxxxx
1
4.5 Cabinet-type casing
Enclosing the product in cabinet-type casing requires compliance with the applicable design instructions.
If you require cabinet-type casing for your product, consult
a heating specialist company. Never, under any circumstances, enclose the product yourself.
4.6 Opening the isolator devices
1. Ask the competent person who installed the product to
explain to you where these isolator devices are located
and how to handle them.
2. Open the gas isolator cock fully.
3. Open the service valves in the heating installation's flow
and return.
Conditions: Product with integrated hot water generation or connected
domestic hot water cylinder
▶ Open the cold water stop valve.
4.7 Starting up the product
▶ Only start up the product once the casing has been com-
pletely closed.
4.8 Switching on the product
2
50
2
12Scroll bar
Current assignment of
the and buttons.
You can find an overview of the menu structure in the appendix.
Operator level – overview (→ Page 13)
34Selection level list
entries
Name of the selection
level
4.4 Adjustment and display levels
The product has two adjustment and display levels.
The end user level contains information and setting options
that you require as the end user.
The installer level is reserved for the competent person. It is
protected by a code. Only competent persons may change
any settings in the installer level.
Operator level – overview (→ Page 13)
▶ Press the on/off button (1).
◁ The "Basic display" (→ Page 8) (2) appears on the
display.
4.9 Setting the language
1.
Press and hold and at the same time.
2.
Also briefly press .
3.
Press and hold
language setting.
4.
Select the required language by pressing
5.
Confirm by pressing .
6.
Once you have set the correct language, press
again to confirm this.
and until the display shows the
1
or .
8 Operating instructions ecoTEC plus 0020245033_01
Page 9
Operation 4
4.10 Setting the heating flow temperature
1.
Press ( ).
◁ The target value of the heating flow temperature
appears on the display.
Note
The competent person may have adjusted
the maximum possible temperature.
Conditions: No controller connected
▶
Use
ure.
▶
Confirm by pressing .
Conditions: Controller connected
or to set the required heating flow temperat-
▶ Set the maximum possible heating flow temperature on
the product.
▶
Confirm by pressing .
▶ Set the required heating flow temperature on the control-
ler (→ Controller operating instructions).
4.11 Setting the hot water temperature
Warning.
Risk of being scalded by hot water.
To protect against Legionella, the hot water can be heated up to above 60 °C at predefined times.
▶ Have a competent person inform you
about the measures that should be taken
to protect against Legionella in your system.
4.12 Switching Comfort mode on and off
Note
Comfort mode immediately supplies hot water at
the required temperature, without you having to
wait for the water to heat up.
1.
Press
2.
Press ( ).
( ).
◁ Comfort on or Comfort off are shown flashing in
the display.
3.
Activate or deactivate Comfort mode by pressing or
respectively.
4.
Press to confirm this change.
◁
When you have activated Comfort mode, the " "
symbol appears on the basic display. When you
have deactivated Comfort mode, the " " symbol
goes out on the basic display.
4.13 Activating the shift-load cylinder
Applicability: Product with integrated hot water generation and shift-load
cylinder
To activate an actoSTOR shift-load cylinder which is also
connected, you must switch on cylinder charging on your
product.
▶ To do this, activate Comfort mode (Comfort mode
(→ Page 9)).
◁
The symbol " " appears in the display.
▶ Set the hot water temperature.
Conditions: Cylinder charging switched on
– Hot water temperature: 50 … 65 ℃
1.
Press ( ).
◁ The set hot water temperature flashes in the display.
Conditions: No controller connected
▶
Change the hot water temperature by pressing or
.
▶
Confirm by pressing .
Conditions: Controller connected
▶
Use to set the maximum possible hot water temperature on the product.
▶
Confirm by pressing .
▶ Set the required hot water temperature on the controller
(→ Controller operating instructions).
Danger!
Risk of scalding!
The products are equipped with an automatic
anti-legionella function: If the temperature in
the shift-load cylinder falls below 50 °C for
24 hours, the cylinder is heated up to 70 °C
once.
▶ Please note when drawing water that it
can be very hot.
▶ If you want to switch off the "Anti-legionella function", you
should ask a competent person.
▶ If you want to switch off cylinder charging, deactivate
Comfort mode "Switching Comfort mode on and off
(→ Page 9)".
Conditions: Cylinder charging switched off
– Hot water temperature: 35 … 65 ℃
◁ The cylinder is not maintained at a specific temperat-
ure. If you draw off the water, the product switches on
and, in this case, only operates as an instantaneous
water heater.
0020245033_01 ecoTEC plus Operating instructions 9
Page 10
4 Operation
4.14 Setting the target cylinder temperature
Applicability: Product with integrated hot water generation and shift-load
cylinder
Conditions: Water hardness: > 3.57 mol/m³
▶ Have a competent person take appropriate measures to
protect against Legionella.
▶ Set the target cylinder temperature to a maximum of 50
°C.
4.15 Switching off the product's functions
4.15.1 Switching off heating mode (Summer mode)
1. To switch off heating mode without switching off hot
water generation, press ( ).
◁ The value of the heating flow temperature appears
in the display.
2.
Use the button to set the heating flow temperature to
Heating off.
3.
Confirm by pressing .
◁ Heating mode is switched off.
◁
The symbol appears on the display.
4.15.2 Switching off hot water generation
Applicability: Product with hot water generation through external domestic
hot water cylinder
1. To switch off cylinder charging without switching off
heating mode, press ( ).
◁ The set hot water temperature flashes in the display.
2.
Use the button to set the hot water temperature to
Heating off.
3.
Confirm by pressing .
◁ Cylinder charging is switched off.
◁ Only the frost protection function for the cylinder
remains active.
4.16 Guaranteeing the correct filling pressure of the heating system
4.16.1 Checking the filling pressure of the heating installation
Note
To ensure that the heating installation operates
smoothly, the filling pressure when the heating
installation is cold must be between 0.1 MPa and
0.2 MPa (1.0 bar and 2.0 bar) or lie between the
two dashed lines in the bar graph display.
If the heating installation extends over several
storeys, a higher filling pressure may be required
for the heating installation. Ask a competent person for details.
In addition, the symbol appears after approx.
one minute.
If the filling pressure in the heating installation
falls below 0.05 MPa (0.5 bar), then the product
switches off. The display alternates between the
fault message F.22 and the current filling pressure.
1.
Press twice.
◁ The values for the current filling pressure and for the
minimum and maximum filling pressures appear in
the display.
2. Check the filling pressure in the display.
1 / 2
System pressure: 0.1 … 0.2 MPa (1.0 … 2.0 bar)
The filling pressure is in the intended pressure range.
2 / 2
Filling pressure: < 0.08 MPa (< 0.80 bar)
▶ Fill the heating installation. (→ Page 10)
◁ If you have topped up the installation with suf-
ficient heating water, the display automatically
disappears after 20 seconds.
4.16.2 Filling the heating installation
Caution.
Risk of material damage due to heating
water that is extremely calciferous or corrosive or contaminated by chemicals.
Unsuitable tap water damages the seals
and diaphragms, blocks components in the
product and heating installation through
which the water flows and causes noise.
▶ Only fill the heating installation with suit-
able heating water.
1. Ask a competent person where the filling cock is loc-
ated.
2. Connect the filling tap to a heating water supply in the
way you were told by the competent person.
3. Open all radiator valves (thermostatic radiator valves) of
the heating installation.
4. Open the heating water supply.
10 Operating instructions ecoTEC plus 0020245033_01
Page 11
Troubleshooting 5
5. Turn the filling cock on slowly and allow water to flow in
until the required filling pressure has been reached.
6. Close the heating water supply.
7. Purge all radiators.
8. Check the filling pressure in the display.
9. Top up with more water if necessary.
10. Close the filling cock.
11. Return to the basic display. (→ Page 8)
4.17 Protecting the heating installation against
frost
4.17.1 Frost protection function
Caution.
Risk of material damage due to frost.
The frost protection function cannot guarantee flow through the entire heating installation, which means that parts of the heating
installation may freeze and therefore become
damaged.
▶ During a period of frost, ensure that the
heating installation remains in operation
and that all rooms are sufficiently heated,
even when you are away.
Note
To keep the frost protection devices active, you
should switch your product on and off using the
controller, if one is provided.
5.2 Calling up (Live monitor) status codes
▶
Status codes – Overview (→ Page 13)
andPress at the same time.
◁ The current operating status (status code) is shown
on the display.
6 Care and maintenance
6.1 Maintenance
An annual inspection of the product carried out by a competent person is a prerequisite for ensuring that the product is
permanently ready and safe for operation, reliable, and has a
long working life.
After servicing, complete the relevant service interval record
section of the benchmark checklist, located at the rear of the
installation manual.
6.2 Caring for the product
Caution.
Risk of material damage caused by un-
suitable cleaning agents.
▶ Do not use sprays, scouring agents, de-
tergents, solvents or cleaning agents that
contain chlorine.
▶ Clean the casing with a damp cloth and a little solvent-
free soap.
If the heating flow temperature falls below 5 °C when the
on/off button is on, the product comes into operation and
heats the circulating water to approx. 30 °C on both the heating side and the hot water side (if available).
4.17.2 Draining the heating installation
You can guarantee frost protection during very long switchoff times by draining the heating installation and the product
completely.
▶ Consult a competent person about this.
5 Troubleshooting
5.1 Detecting and rectifying faults
▶ If faults occur, proceed in accordance with the table in
the appendix.
Troubleshooting (→ Page 14)
▶ If you have been unable to eliminate the fault using the
measures specified, or fault messages (F.xx) appear,
consult a competent person.
6.3 Reading maintenance messages
If the symbol is shown on the display, the product requires
maintenance work.
The product is not in fault mode but continues to operate.
▶ Consult a competent person about this.
▶ If the water pressure is flashing at the same time, simply
add more heating water.
6.4 Checking the condensate drain pipework and tundish
The condensate drain pipework and tundish must always be
penetrable.
▶ Regularly check the condensate drain pipework and tun-
dish for faults and, particularly, for blockages.
You must not be able to see or feel any obstructions in the
condensate drain pipework and tundish.
▶ If you notice a fault, have it rectified by a competent per-
son.
0020245033_01 ecoTEC plus Operating instructions 11
Page 12
7 Decommissioning
7 Decommissioning
7.1 Temporarily decommissioning the product
Caution.
Risk of material damage due to frost.
The frost protection and monitoring devices
are only active while the unit is connected
to the power mains and switched on via the
on/off button, and when the gas isolator cock
is open.
▶ Temporarily decommission the product
only if no frost is expected.
▶ Temporarily decommission the product only if no frost is
expected.
▶ Press the on/off button.
◁ The display goes out.
▶ When decommissioning the product for a prolonged
period (e.g. holiday), close the gas isolator cock and also,
for combination products, the cold water stop valve.
7.2 Permanently decommissioning the product
9 Guarantee and customer service
9.1 Guarantee
– Two year guarantee for ecoTEC plus appliances
Vaillant provides this appliance with a parts and labour
guarantee against defects that may occur within twentyfour months of the installation date. For the 2nd year of the
guarantee to be valid an annual service must be carried out
by a competent person approved at the time by the Health
and Safety Executive one year after installation. The cost of
this annual service is not included in the guarantee.
– Registering with us
Registration is simple. Just complete the Guarantee Registration Card and return to Vaillant within 30 days of installation. Your details will then be automatically registered within
the Vaillant scheme.
– Immediate help
If your Vaillant boiler develops a fault your first action should
be to contact your installer, as his professional assessment
is needed under the terms of our Guarantee. If you are unable to contact your installer, phone Vaillant Service Solutions:
Telephone: 0330 100 3461
▶ Have a competent person permanently decommission
the product.
8 Recycling and disposal
▶ The competent person who installed your product is re-
sponsible for the disposal of the packaging.
If the product is identified with this symbol:
▶ In this case, do not dispose of the product with the
household waste.
▶ Instead, hand in the product to a collection centre for old
electrical or electronic appliances.
If the product contains batteries that are marked with
this symbol, these batteries may contain substances that are
hazardous to human health and the environment.
▶ In this case, dispose of the batteries at a collection point
for batteries.
9.2 Customer service
To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance Agreement.
Please contact Vaillant Service Solutions for further details:
Telephone: 0330 100 3461
12 Operating instructions ecoTEC plus 0020245033_01
Page 13
Appendix
A Operator level – overview
Appendix
Setting level Values Unit Increment, select Default
Min. Max.
Water pressure →
Water pressure Current value bar
Live monitor →
Status Current value
Information →
Contact details Phone number
Serial number Permanent value
Display contrast Current value 1 25
15 40
Basic settings →
Language Current language Languages available for selection Country-
Resets →
Reset anti-cycl. time Current value min
setting
specific
B Status codes – Overview
Status codes that are not listed here can be viewed in the installation instructions.
Status code Parameter Meaning
Displays in heating mode
S.00 Heating: No heat demand
S.02 Heating mode: Pump pre-run
S.03 Heating mode: Ignition
S.04 Heating mode: Burner on
S.06 Heating mode: Fan overrun
S.07 Heating mode: Pump overrun
S.08 Heating mode: Anti-cycling time
Displays in hot water handling mode
S.10 DHW demand
S.14 DHW mode: Burner on
Displays in Comfort mode with warm start or hot water handling mode with cylinder
S.20 DHW demand
S.22 DHW mode: Pump pre-run
S.24 DHW mode: Burner on
Others
S.31 No heat demand: Summer mode
S.34 Heating mode: Frost protection
S.46 Waiting time: Measuring program
Heating: No heat demand
Heating mode: Pump pre-run
Heating mode: Ignition
Heating mode: Burner on
Heating mode: Fan overrun
Heating mode: Pump overrun
Heating, remaining anti-cycling time xx mins
Hot water requirement via flow sensor
DHW mode: Burner on
Hot water requirement
DHW mode: Pump pre-run
DHW mode: Burner on
Summer mode active
Frost protection mode, frost protection
Comfort protection mode, flame loss at minimum load
0020245033_01 ecoTEC plus Operating instructions 13
Page 14
Appendix
C Troubleshooting
Fault Cause Measure
Product does not start
up:
– No hot water
– Heating remains cold
Hot water generation
functioning correctly;
heating does not start
up.
The gas isolator cock installed on-site and/or the gas
isolator cock on the product is closed.
The power supply in the building is disconnected. Check the fuse in the building. The product
The product is switched off. Switch on the product (→ "Switching on the
The heating flow temperature is set too low or to the
Heating off position, and/or the hot water temperature
is set too low.
The system pressure is insufficient.
Low water pressure in the heating installation (fault message: F.22).
There is air in the heating installation. Have your competent person purge the heating
After three unsuccessful attempts to ignite the flame, the
product switches to fault mode (fault message: F.28).
The external controller is not set correctly. Set the external controller correctly (→ Controller
Open both gas isolator cocks.
switches on automatically when the power is
restored.
product" section).
Set the heating flow temperature and hot water
temperature (→ "Setting the heating flow temperature" section/→ "Setting the hot water temperature" section).
Fill the heating installation (→ "Filling the heating
installation" section).
installation.
Press the fault clearance key for one second.
The product makes another attempt to ignite the
flame.
If you have been unable to eliminate the ignition
fault after three fault clearance attempts, consult
a competent person.
operating instructions).
14 Operating instructions ecoTEC plus 0020245033_01
Page 15
Page 16
0020245033_01
0020245033_01
04.07.2019
Supplier
Vaillant Ltd.
Nottingham Road Belper Derbyshire DE56 1JT
Telephone 0330 100 3461
info@vaillant.co.uk www.vaillant.co.uk
© These instructions, or parts thereof, are protected by copyright and may be reproduced or distributed only with
the manufacturer's written consent.
We reserve the right to make technical changes.
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