Operating instructions
ecoTEC pure
VC 146/7-2 (E-DE)
VCW 206/7-2 (E-DE)
DE
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
Contents
Contents
1
1.1
1.2
1.3
2
2.1
2.2
2.3
3
3.1
3.2
3.3
3.4
3.5
3.6
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5
5.1
5.2
2
6
6.1
Safety ............................................ 3 6.2
Action-related warnings ................. 3 6.3
Intended use .................................. 3
General safety information............. 4 6.4
Notes on the documentation ...... 7
7
Observing other applicable
documents ..................................... 7 7.1
Storing documents......................... 7
Validity of the instructions .............. 7 7.2
Product description..................... 7
Product design............................... 7 8
Control elements............................ 7 9
Description of the display............... 8
Information on the identification
plate ............................................... 8
Serial number ................................ 9
CE label ......................................... 9
Function........................................ 9
Operating concept ......................... 9
Opening the isolator devices ....... 10
Switching on the product ............. 10
Setting the heating flow
temperature ................................. 11
Setting the hot water
temperature ................................. 11
Switching off the product's
functions ...................................... 12
Guaranteeing the correct filling
pressure in the heating circuit...... 12
Switching the product to
standby mode .............................. 13
Protecting the heating
installation against frost ............... 14
Troubleshooting ........................ 14
Detecting and rectifying faults...... 14
Displaying the status codes ......... 14
Care and maintenance .............. 14
Maintenance ................................ 14
Caring for the product .................. 14
Reading maintenance
messages .................................... 15
Checking the condensate drain
pipework and tundish................... 15
Decommissioning...................... 15
Temporarily decommissioning
the product................................... 15
Permanently decommissioning
the product................................... 15
Recycling and disposal............. 15
Guarantee and customer
service ........................................ 16
9.1 Guarantee.................................... 16
9.2 Customer service......................... 16
Appendix ............................................... 17
A
Operator level – overview ......... 17
B
Status codes – Overview........... 17
C
Troubleshooting and fault
elimination.................................. 18
C.1 Troubleshooting ........................... 18
C.2 Rectifying faults ........................... 18
Operating instructions ecoTEC pure 0020258017_00
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 heat-
ing 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 maintenance 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.
0020258017_00 ecoTEC pure Operating instructions
3
1 Safety
1.3 General safety
information
1.3.1 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 instructions are
provided in these operating
instructions.
▶ 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.
▶ Alert the police and fire brigade as soon as you are outside the building.
▶ Use a telephone outside the
building to inform the emergency service department of
the gas supply company.
1.3.3 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.
1.3.2 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. 1.3.4 Risk of death due to
explosive and flammable
lighters, matches).
materials
▶ Do not smoke.
▶ Do not use any electrical
▶ Do not use the product in
switches, mains plugs, doorstorage rooms that contain
bells, telephones or other
explosive or flammable subcommunication systems in
stances (such as petrol, pathe building.
per or paint).
▶ Close the emergency control
valve or the main isolator.
4
Operating instructions ecoTEC pure 0020258017_00
Safety 1
1.3.5 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 supplies
– 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
1.3.7 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.
▶ 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.
1.3.8 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.
1.3.6 Risk of poisoning
▶ If you cannot ensure the opcaused by insufficient
eration, have a competent
supply of combustion air
person drain the heating installation.
Conditions: Open-flued operation
▶ Ensure that there is a sufficient supply of combustion
air.
0020258017_00 ecoTEC pure Operating instructions
5
1 Safety
1.3.9 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 specified.
6
Operating instructions ecoTEC pure 0020258017_00
Notes on the documentation 2
2 Notes on the
documentation
2.1
▶
3.1
Product design
Observing other applicable
documents
You must observe all operating instructions enclosed with the system components.
2.2
▶
3 Product description
Storing documents
Keep this manual and all other applicable documents safe for future use.
2.3
Validity of the instructions
These instructions apply only to:
Product article number
ecoTEC pure
VC 146/72 (E-DE)
VCW 206/72 (E-DE)
0010023439
1
0010023440
2
3
1
2
3.2
Product
Control elements
3
Plate with serial
number on the
rear
Control elements
1
2
7
1
2
3
4
5
0020258017_00 ecoTEC pure Operating instructions
6
3
5
4
Display
On/off button
and reset button
Right selection
button
button
button
6
7
Left selection
button
Access to the
menu for additional information/installer
level
7
3 Product description
3.3
Description of the display
Symbol
/
Meaning
/
– Appears instead of the
basic display.
Status code
1
3
S.XX
2
1
2
Operating information
Operating mode,
selecting and
confirming the
operating mode
Symbol
3
Display showing
the current heating flow temperature, the filling
pressure in the
heating installation, the operating mode or a
fault code
3.4
Burner operating correctly
– Burner on
Heating installation filling
pressure
– Permanently on: Filling
pressure in the permitted
range
– Flashing: Filling pressure outside the permitted
range, purging function
activated
DHW mode
– Permanently on: Hot water activated
– Flashing: Burner on in
draw-off mode
Heating mode
– Permanently on: Heating
mode activated
– Flashing: Burner on in
heating mode
Maintenance required
Information on maintenance
messages in the event of
faults
Setting to be confirmed
Navigating through various
menus
8
– Heating mode is switched
off (summer mode)
– Hot water handling mode
is switched off (product
with integrated hot water
generation/product with
connected domestic hot
water cylinder)
– Appears when the
product goes into standby
mode.
OFF
Meaning
Fault in the product
Information on the
identification plate
The identification plate is mounted on the
underside of the product in the factory.
The identification plate keeps record of
the country in which the product is to be
installed.
Information
on the data
plate
Meaning
Condensing
technology
Efficiency class of the boiler
in accordance with EC Directive 92/42/EEC
For quality control purposes;
3rd and 4th digits = year of
production
For quality control purposes;
5th and 6th digits = week of
production
For identification purposes;
7th to 16th digits = product
article number
For quality control purposes;
17th to 20th digits = place of
manufacture
Product designation
Approved gas category
Permissible flue gas connections
Serial number
... ecoTEC ...
Cat.
Type: Xx3(x)
Operating instructions ecoTEC pure 0020258017_00
Function 4
Information
on the data
plate
Meaning
2H / 2E / 3P /
2K...
Gas group and gas connection pressure as set at the
factory
Max. flow temperature
Maximum water pressure in
heating mode
NOx class for the product
Electric connection
Tmax
PMS
NOx
V
Hz
W
IP
Code (DSN)
Qn
Pn
Pnc
Qnw
Pnw
D
PMW
Max. electrical power consumption
Protection class
Specific product code
Heating mode
Nominal heating load range
in heating mode
Nominal heat output range
in heating mode
Nominal heat output range
in heating mode (condensing
technology)
Hot water generation
Nominal heating load range
in domestic hot water mode
Nominal heat output range
in domestic hot water mode
Specific flow rate
Maximum water pressure in
domestic hot water mode
Barcode with serial number
3.5
Serial number
The serial number can be found on the
rear of a plastic plate at the bottom of the
front casing and on the identification plate.
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.
4 Function
4.1
Operating concept
The display switches on when you switch
on the product or press a button. You can
now configure settings by pressing the
buttons again.
When you switch the product off using the
on/off button, the display goes out (the
frost protection function is active for as
long as power is supplied).
Button
Note
Make absolutely sure that the
product is compatible with the gas
group at the installation site.
0020258017_00 ecoTEC pure Operating instructions
Meaning
– Setting the hot water temperature
– Cancelling the change to a set
value or activating an operating
mode
– Calling up a higher selection
level in the menu
– Setting the heating flow temperature, filling pressure of the
heating system or activating the
heating mode
– Confirming a set value or activating an operating mode
– Calling up a lower selection
level in the menu
– Read the system pressure
(press twice)
9
4 Function
Button
+
or
– A room thermostat is connected to the
product or not
– A domestic hot water cylinder with temperature sensor is connected to the
product or not
Meaning
– Calling up the additional functions
– Navigating between individual
menu items
– Increasing or decreasing the
chosen set value
– On/off button (press and hold
the button for < 3 s)
– Reset button (press and hold
the button for > 3 s)
4.1.2 Operating levels
The product has two operating levels:
Both selection buttons have a soft key
function, i.e. their function can change.
If, for example, you press the left-hand
selection button in the basic display,
the current function switches from (Domestic hot water temperature) to (Back).
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 a procedure at
any time. If you do not press any buttons
for longer 15 minutes, the display returns
to the basic display.
4.1.1 Basic display
– The operator level shows the most important information and offers set-up
options which do not require any special
prior knowledge.
– Specialised knowledge is required in order to use the installer level (access for
competent persons). This is therefore
protected by an access code.
Operator level – overview (→ Page 17)
4.2
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 installed
on-site.
3. Open the gas isolator cock, which is
directly below the product or in its immediate vicinity.
4. Open the service valves in the heating
installation's flow and return.
5. Open the cold water stop valve.
4.3
The basic display shows the current
product status.
To return to the basic display, press the
button. If you do not press any buttons
within three minutes, the display becomes
dark and automatically switches back to
the basic display.
If an error message appears, the error
code will be shown on the basic display.
The available functions vary depending on
whether:
10
Switching on the product
1. Only start up the product once the casing has been completely closed.
2. If the display is switched off, press
for less than 3 seconds.
◁
The basic display is shown in the
display.
Operating instructions ecoTEC pure 0020258017_00
Function 4
4.4
Setting the heating flow
temperature
4.5
Note
If the eBUS room temperature control is connected to the product,
the domestic hot water temperature and the heating flow temperature cannot be set via the operating
display.
Setting the hot water
temperature
Note
If the eBUS room temperature control is connected to the product,
the domestic hot water temperature and the heating flow temperature cannot be set via the operating
display.
Conditions: The temperature is controlled by the
product
Conditions: The temperature is controlled by the
product
▶
▶
Press
◁
▶
Press the
perature.
◁
▶
.
or
button to set the tem-
.
Note
If you press the button again,
the heating installation pressure
is shown in the display.
▶
Press
◁
.
▶
▶
You cannot set the heating flow temperature.
.
The domestic hot water temperature
now flashes in the display.
Press the
perature.
◁
or
button to set the tem-
is shown in the display.
Press the
Press .
◁
button to confirm.
The display switches to the basic
display.
Conditions: Controller-regulated temperature
▶
The basic display is shown.
Conditions: Controller-regulated temperature
▶
▶
is shown in the display.
Confirm by pressing
Press
◁
The heating flow temperature
flashes in the display.
Set the hot water temperature on the
controller. See the instructions for the
controller.
Conditions: The temperature is controlled via the
domestic hot water cylinder's thermostat.
▶
Note
If you press the button, the
heating installation pressure is
shown in the display.
0020258017_00 ecoTEC pure Operating instructions
Set the hot water temperature on the
domestic hot water cylinder. See the
instructions for the domestic hot water
cylinder.
11
4 Function
▶
Conditions: The temperature is controlled via the
domestic hot water cylinder's temperature sensor.
▶
◁
Set the hot water temperature on the
controller. See the instructions for the
controller.
4.6
Press
Switching off the product's
functions
4.7
Guaranteeing the correct
filling pressure in the heating
circuit
4.7.1 Checking the system pressure
4.6.1 Switching off heating mode
(Summer mode)
Note
Your product has a pressure
sensor and a digital pressure
indicator.
The product switches to fault mode
if the pressure falls below the required system pressure (below
0.05 MPa (0.5 bar)). If the heating
installation extends over several
floors, a higher system pressure
may be necessary. Ask your competent person for details.
Conditions: The temperature is controlled by the
product
▶
Press
◁
▶
◁
▶
The heating flow temperature
flashes in the display.
.
Heating mode is switched off.
Press
◁
until
is shown in the display.
Confirm by pressing
◁
▶
.
Press and press and hold
OFF is shown in the display.
1. Press
.
◁
The display switches to the basic
display.
You cannot switch off heating mode on
the product. See the instructions for the
controller.
4.6.2 Switching off the hot water
handling mode
Press
◁
▶
◁
▶
System pressure: 0.08 … 0.2 MPa
(0.80 … 2.0 bar)
The system pressure is in the intended
pressure range.
until
System pressure: < 0.08 MPa
(< 0.80 bar)
▶ Fill the heating installation.
(→ Page 13)
◁
When you have reached a sufficient pressure range, the display
disappears after 20 seconds.
is shown in the display.
Press
◁
12
.
The domestic hot water temperature
now flashes in the display.
Press and press and hold
OFF is shown in the display.
1/2
2/2
Conditions: Temperature regulated by the product
or by the room temperature controller
▶
twice.
The current system pressure is
shown in the display.
2. Check the system pressure on the
display.
Conditions: Controller-regulated temperature
▶
.
The display switches to the basic
display.
to confirm.
Hot water generation is switched off.
Operating instructions ecoTEC pure 0020258017_00
Function 4
4.7.2 Filling the heating installation
Applicability: Product with filling device
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.
▶
▶
Applicability: Product without filling device
▶
▶
▶
▶
▶
▶
▶
▶
▶
▶
▶
Only fill the heating installation with suitable heating
water.
In case of doubt, ask a competent person for details.
Note
The competent person is responsible for filling the heating installation the first time.
▶
1
▶
▶
▶
▶
4.8
▶
On-site, connect the filling cock to a
cold water pipe, as explained by the
competent person.
Open all radiator valves (thermostatic
radiator valves) of the heating installation.
Open the cold water pipe.
Turn the filling cock on slowly and allow water to flow in until the required
system pressure has been reached.
Close the cold water pipe.
Purge all radiators.
Check the system pressure on the
display. (→ Page 12)
Top up with more water if required.
Close the filling cock.
Disconnect the filling cock from the
cold water pipe.
0020258017_00 ecoTEC pure Operating instructions
Open all radiator valves (thermostatic
radiator valves) of the heating installation.
Slowly turn the blue valve on the
filling device (1) that is located below the product and top it up with water until the required system pressure
has been reached.
Purge all radiators.
Check the system pressure on the
display. (→ Page 12)
Top up with more water if required.
Close the blue valve on the filling
device (1).
Switching the product to
standby mode
Press the
seconds.
◁
◁
◁
◁
button for less than three
Once the requirement currently in
use has finished, the display will
show OFF and go out.
The product is now in standby mode.
The product's frost protection function is activated.
The main power supply is not interrupted. The product continues to be
supplied with power.
13
5 Troubleshooting
4.9
5 Troubleshooting
Protecting the heating
installation against frost
5.1
4.9.1 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.
▶
▶
▶
Detecting and rectifying faults
If faults occur or fault messages (F.XX)
are displayed, proceed as set out in the
tables in the appendix.
If the product is not functioning correctly, contact a competent person.
5.2
Displaying the status codes
1. Press
◁
at the same time.
S.XX is shown in the display, followed by the heating flow temperature and the internal system pressure.
During a period of frost, en2. Look up the meaning of the status
sure that the heating installacodes.
tion remains in operation and
Status codes – Overview (→ Page 17)
that all rooms are sufficiently 3. Press .
heated, even when you are
◁ The display switches to the basic
away.
display.
To keep the frost protection devices active,
you should switch your product on and off
using the controller, if one is provided.
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).
4.9.2 Draining the heating
installation
When the unit is switched off for an extended period, frost protection can be guaranteed by completely draining the heating
installation and the product.
▶ Consult a competent person about this.
6 Care and maintenance
6.1
Maintenance
An annual inspection and biennial maintenance 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. The inspection
may require maintenance to be carried out
earlier, depending on the results.
6.2
Caring for the product
Caution.
Risk of material damage
caused by unsuitable cleaning agents.
▶
14
and
Do not use sprays, scouring
agents, detergents, solvents
or cleaning agents that contain chlorine.
Operating instructions ecoTEC pure 0020258017_00
Decommissioning 7
▶
▶
Clean the casing with a damp cloth and
a little solvent-free soap.
6.3
Reading maintenance
messages
Temporarily decommission
the product only if no frost is
expected.
▶ Press the on/off button.
If the symbol is shown in the display, the
◁ The display goes out.
product requires maintenance work.
The product is not in fault mode but contin- ▶ When decommissioning the product
for a prolonged period (e.g. holiday),
ues to operate.
close the gas isolator cock and also, for
▶ Consult a competent person about this.
combination products, the cold water
▶ If the water pressure is flashing at the
stop valve.
same time, simply add more heating
water.
7.2 Permanently
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 tundish 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 person.
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.
decommissioning the product
▶
Have a competent person permanently
decommission the product.
8 Recycling and disposal
▶
The competent person who installed
your product is responsible 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.
0020258017_00 ecoTEC pure Operating instructions
15
9 Guarantee and customer service
9 Guarantee and customer
service
9.1
Guarantee
Herstellergarantie gewähren wir nur bei
Installation durch einen anerkannten Fachhandwerksbetrieb.
Dem Eigentümer des Geräts räumen wir
diese Herstellergarantie entsprechend
den Vaillant Garantiebedingungen ein.
Garantiearbeiten werden grundsätzlich
nur von unserem Kundendienst ausgeführt. Wir können Ihnen daher etwaige
Kosten, die Ihnen bei der Durchführung
von Arbeiten an dem Gerät während der
Garantiezeit entstehen, nur dann erstatten, falls wir Ihnen einen entsprechenden
Auftrag erteilt haben und es sich um einen
Garantiefall handelt.
9.2
Customer service
Auftragsannahme Vaillant Kundendienst:
021 91 5767901
16
Operating instructions ecoTEC pure 0020258017_00
Appendix
Appendix
A Operator level – overview
Setting level
Values
Min.
Max.
Increment, select, explanation
Default setting
Domestic hot water mode (product with integrated hot water generation or connected
domestic hot water cylinder with temperature sensor)
Water temperature
Current value < 35 = OFF
OFF
35 ℃ 60 ℃
Heating mode
Heating flow temperature
Current value < 10 = OFF
Underfloor heating = 35-50
Radiator = 35-80
Note
10 ℃ 80 ℃
The temperature range above 75 °C
can only be set by a competent person.
OFF
B Status codes – Overview
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Codes that are not listed here can be found in the installation instructions.
Status code
S.00
S.02
S.03
S.04
S.06
S.07
S.08
S.10
S.14
S.20
S.22
S.24
S.31
S.34
Meaning
Displays in heating mode
Heating mode: No requirement
Heating mode: Pump pre-run
Heating mode: Burner ignition
Heating mode: Burner on
Heating mode: Fan overrun
Heating mode: Pump overrun
Heating mode: Temporary shutdown after heating procedure
Displays in hot water handling mode
Hot water handling mode: Requirement
DHW mode: Burner on
Display in Comfort mode with warm start or hot water handling mode with cylinder
Hot water handling mode: Requirement
Hot water handling mode: Pump pre-run
DHW mode: Burner on
Other displays
No heating demand: Summer mode, eBUS controller, waiting period
Frost protection active
0020258017_00 ecoTEC pure Operating instructions
17
Appendix
Status code
S.46
Meaning
Protection mode: Minimum load
C Troubleshooting and fault elimination
C.1 Troubleshooting
Symptom
The system pressure is flashing on the
display
Product does not start
up (no hot water,
heating remains cold)
Hot water generation
functioning correctly;
heating does not start
up
Possible cause
Measure
The system pressure
▶ Fill the heating installation. (→ Page 13)
is too low: < 0.05 MPa
(< 0.50 bar). Low water pressure in the
heating installation.
The system pressure
▶ Wait until the excess heating water has
is too high: > 0.3 MPa
flowed out through the expansion relief
(> 3 bar).
valve.
The gas isolator cock ▶ Open both gas isolator cocks.
installed on-site and/or
the gas isolator cock
on the product is
closed.
The cold water stop
▶ Open the cold water stop valve.
valve is closed.
The product is
▶ Switch on the product. (→ Page 10)
switched off.
The heating flow tem- 1. Set the heating flow temperature.
perature/hot water
2. Set the hot water temperature.
temperature has been
set too low and/or the
heating mode/hot water generation has
been switched off.
There is air in the
▶ Have a competent person purge the heating
heating installation.
installation.
The external controller ▶ Set the external controller correctly (→Conis not set correctly.
troller operating instructions).
C.2 Rectifying faults
Message
Possible cause
Measure
F.28 Ignition unsuccessful
After three unsuccessful ignition attempts, the product
has switched to fault
mode.
1. Check whether the gas isolator cock is
open.
2. Press the reset button for longer than
three seconds.
3. If you have been unable to eliminate the
ignition fault after the fault clearance attempt, consult a competent person.
18
Operating instructions ecoTEC pure 0020258017_00
0020258017_00
0020258017_00
19.05.2017
Supplier
Vaillant Deutschland GmbH & Co.KG
Berghauser Str. 40
D-42859 Remscheid
Telefon 021 91 18‑0
Telefax 021 91 18‑2810
Auftragsannahme Vaillant Kundendienst 021 91 5767901
info@vaillant.de
www.vaillant.de
© 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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