Viessmann VITOTRONIC 200 User manual

for use by heating contractor
Please file in Service Binder
5547 199 - 02 04/2015
Operating Instructions
VITOTRONIC
r
200
With HO1B User Interface - Constant temperature control mode
Vitodens 200-W, B2HA
Models 45 to 150
Wall-mounted, gas-fired condensing boiler in conjunction
with the Vitotronic 300-K MW2C cascade control
For operation with natural gas and liquid propane gas
Heating input 55 to 530 MBH
16 to 150 kW
Read and save these instructions
for future reference.
Product may not be exactly as shown
IMPORTANT
Do not store or use gasoline or other
flammable liquids in the vicinity of this
or any other appliance.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliances.
Do not touch any electrical switches,
do not use any phone in your building.
Immediately call your gas supplier
from a neighbor’s phone. Follow
the gas supplier’s instructions.
If you cannot reach your gas supplier,
call the fire department.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
If the information in this manual is not followed
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
WARNING
Improper installation, adjustment, and/
or operation could cause carbon monoxide
poisoning resulting in injury or loss of life.
This product must be installed and serviced
by a professional service technician who is
experienced and qualified in hot water boiler
installation and gas combustion.
WARNING
Vitocrossal 300, CU3A
Models 26 to 57
Floor mounted, gas-fired condensing boiler in conjunction
with the Vitotronic 300-K MW2C cascade control
For operation with natural gas and liquid propane gas
Heating input 19 to 199 MBH
5.5 to 58 kW
Certified as a component
part for Viessmann boilers

Vitotronic 200 Operating
5547 199 - 02
General
Safety, Installation and Warranty Requirements
2
Please ensure that these instructions are read and understood before commencing installation. Failure to comply with
the instructions listed below and details printed in this manual can cause product/property damage, severe personal
injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information
found in manual subsections).
WARNING
Installers must follow local regulations with respect to
installation of carbon monoxide detectors. Follow the
Viessmann maintenance schedule of the boiler contained
in this manual.
Product documentation
Read all applicable documentation before commencing
installation. Store documentation near boiler in a
readily accessible location for reference in the future
by service personnel.
For a listing of applicable literature,
please see section entitled “Important
Regulatory and Safety Requirements”.
Warranty
Information contained in this and
related product documentation must
be read and followed. Failure to do
so renders the warranty null and void.
Licensed professional heating contractor
The installation, adjustment, service and maintenance
of this equipment must be performed by a licensed
professional heating contractor.
Please see section entitled
“Important Regulatory and Installation
Requirements”.
Contaminated air
Air contaminated by chemicals can cause by-products
in the combustion process, which are poisonous to
inhabitants and destructive to
Viessmann equipment.
For a listing of chemicals which
cannot be stored in or near the
boiler room, please see subsection
entitled “Mechanical room” in the
“Installation Instructions”.
Advice to owner
Once the installation work is complete, the heating
contractor must familiarize the system operator/
ultimate owner with all equipment, as well as safety
precautions/requirements, shutdown procedure, and
the need for professional service annually before the
heating season begins.
Carbon monoxide
Improper installation, adjustment, service and/or
maintenance can cause flue products to flow into
living space. Flue products contain poisonous carbon
monoxide gas.
For information pertaining to the
proper installation, adjustment, service
and maintenance of this equipment to
avoid formation of carbon monoxide,
please see subsection entitled
“Mechanical room” and “Venting
requirements” in the “Installation Instructions”.
Fresh air
This equipment requires fresh air for
safe operation and must be installed
ensuring provisions for adequate
combustion and ventilation air exist.
For information pertaining to the
fresh air requirements of this product,
please see subsection entitled
“Mechanical room” in the “Installation
Instructions”.
Equipment venting
Never operate boiler without an installed venting
system. An improper venting system can cause
carbon monoxide poisoning.
For information pertaining to
venting and chimney requirements,
please see section entitled “Venting
Connection”. All products of
combustion must be safely vented
to the outdoors.
Operating and Service Documentation
It is recommended that all product documentation such
as parts lists, operating and service instructions be handed
over to the system user for storage. Documentation is to
be stored near boiler in a readily accessible location for
reference by service personnel.
WARNING
This boiler requires fresh air for safe operation and must
be installed with provisions for adequate combustion
and ventilation air (in accordance with local codes and
regulations of authorities having jurisdiction).
Do not operate this boiler in areas with contaminated
combustion air. High levels of contaminants such as
dust, lint or chemicals can be found at construction
sites, home renovations, in garages, workshops, in dry
cleaning/laundry facilities, near swimming pools and in
manufacturing facilities.
Contaminated combustion air will damage the boiler
and may lead to substantial property damage, severe
personal injury and/or loss of life. Ensure boiler/burner
is inspected and serviced by a qualified heating
contractor at least once a year in accordance with the
Service Instructions of the boiler.

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3
Page
Table of Contents
General
Safety
Central Heating
Further Adjustments
Scanning Options
Troubleshooting
Additional Information
Safety, Installation and Warranty Requirements..............2
About these Instructions..............................................4
For your Safety......................................................4
Where to Find the Controls..........................................7
Controls, Vitotronic 200..............................................7
How to use the Controls, Vitotronic 200.......................7
Controls Overview......................................................8
...
Start-up/Standby/Shutdown.........................................9
Setting the Display Contrast.......................................10
Setting the Display Brightness....................................10
Selecting the Language..............................................10
Setting the Time and Date.........................................11
Setting the Temperature Unit (oC/oF)...........................11
Restoring Factory Settings.........................................11
Calling up the Service Level........................................12
Diagnostics..............................................................13
Checking Outputs (Relay Test)...................................14
Scanning Service Messages........................................15
Scanning Fault Messages...........................................15
Emissions Test Mode................................................16
“OFF” is Displayed at the Vitotronic 200.....................17
“” is Displayed at the Vitotronic 200........................17
..
“ “ is Displayed at the Vitotronic 200.........................17
“E“ is Displayed at the Vitotronic 200.......................17
Maintenance............................................................18
Terminology............................................................18

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4
Safety
About these Instructions
Take note of all symbols and notations intended to draw attention to potential hazards or important product
information. These include “WARNING”, “CAUTION”, and “IMPORTANT”. See below.

IMPORTANT
Warnings draw your attention to the presence of
potential hazards or important product information.
Cautions draw your attention to the presence of
potential hazards or important product information.
Helpful hints for installation, operation or maintenance
which pertain to the product.
This symbol indicates that additional, pertinent
information is to be found.
This symbol indicates that other instructions must
be referenced.
WARNING
Indicates an imminently hazardous situation which,
if not avoided, could result in loss of life, serious injury
or substantial product/property damage.
CAUTION
Indicates an imminently hazardous situation which,
if not avoided, may result in minor injury or product/
property damage.
For your Safety
Operation
Before operating the boiler, make sure you fully
understand its method of operation. Your heating
contractor should always perform the initial start-up
and explain the system. Any warranty is null and void
if these instructions are not followed.
Working on the equipment
All personnel working on the equipment or the heating
system must have the proper qualifications and hold all
necessary licenses.
Ensure main power to equipment, heating system, and
all external controls has been deactivated. Close main
gas supply valve. Take precautions in all instances to
avoid accidental activation of power during service work.
Maintenance and cleaning
Regular inspection and service by a qualified heating
contractor is important to the performance of the
Viessmann Vitodens 200-W and Vitocrossal 300 CU3A.
Neglected maintenance impacts on warranty; regular
inspection ensures clean, environmentally friendly and
efficient operation. We recommend a maintenance
contract with a qualified heating contractor.
Flue gas smell
- Deactivate heating equipment.
- Open windows and doors.
- Inform your heating contractor.
Dangerous conditions
- Deactivate main power immediately.
- Close gas supply valve.
Technical information
Literature applicable to all aspects of the Vitodens 200-W
and Vitocrossal 300 CU3A:
- Technical Data Manual
- Installation Instructions
- Service Instructions
Additional applicable literature:
- Installation/Service Instructions Vitotronic 300-K MW2C
- Operating Instructions Vitotronic 300-K MW2C

5
5547 199 - 02
Vitotronic 200 Operating
For your Safety (continued)
Carbon monoxide
The U.S. Consumer Product Safety Commission strongly
recommends the installation of carbon monoxide
detectors in buildings in which gas-burning equipment
is installed. Carbon monoxide (CO) is a colorless,
odorless gas, which may be produced during incomplete
combustion of fuel and/or when the flame does not
receive an adequate supply of combustion air.
Carbon monoxide can cause severe personal injury or
loss of life.
Therefore, carbon monoxide detectors that are in
compliance with a nationally recognized standard (e.g.
ANSI/UL 2034-2002, CSA 6.19-01) should be installed
and maintained in buildings that contain gas-burning
equipment.
Note: Viessmann does not test any detectors and makes
no representation regarding any brand or type of
detector.
For safe operation
We recommend that you frequently:
- Check for debris which could obstruct the flow of
flue gases. The vent or chimney must not be blocked.
A blocked or partially blocked vent or chimney can
cause flue gases to leak into the structure.
Flue gases leaking into the house can cause injury
or loss of life. Blocked or partially blocked chimneys
must have the blockage removed by a qualified
heating contractor.
- Check pressure gage for correct system (water)
pressure. Check for water on the floor from the
discharge pipe of the pressure relief valve or any
other pipe, pipe joint, valve or air vent.
- Check for moisture, water, or appearance of rust
on the flue gas pipes, their joints as well as vent
dampers, or side wall vent terminals (if so equipped).
- Ensure that nothing is obstructing the flow of
combustion and ventilation air and no chemicals,
garbage, gasoline, combustible materials, flammable
vapors and liquids are stored (not even temporarily)
in the vicinity of the boiler.
- Do not allow unsupervised children near the boiler.
Service/inspection of the boiler and the system is
recommended once a year. Maintenance, service and
cleaning are specified in the Installation Instructions.
Before the heating season begins, it is recommended that
the boiler and burner be serviced by a qualified heating
contractor. Service contracts may be established through
gas suppliers or other licensed contractors in your area.
WARNING
As there are no user-serviceable parts on the boiler,
burner or control, the end-user must not perform
service activities or adjustments of any kind on system
components. Failure to heed this warning can cause
property damage, severe personal injury, or loss of life.
CAUTION
Should overheating occur or the gas supply fail to
shut off, do not disconnect the electrical supply to the
pump. Instead, shut off the gas supply at a location
external to the appliance.
WARNING
The operator/ultimate owner is required to have the
heating boiler, burners, and controls checked, as a
minimum once per year, by the original installer or
by a competent heating contractor familiar with the
equipment. Defects must be corrected immediately.
CAUTION
Do not use this boiler if any part has been under water.
Immediately call a qualified heating contractor to
inspect the boiler and to replace any part of the control
system and any gas control which has been under
water.
WARNING
Improper installation, adjustment, service, or
maintenance can cause flue products to flow into
living space. Flue products contain poisonous carbon
monoxide gas which can cause nausea or asphyxiation
resulting in severe personal injury or loss of life.
Safety

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6
WARNING
Failure to protect against frozen pipes could result in
burst water pipes, serious property damage and/or
personal injury. Boiler may shut down. Do not leave
your home unattended for long periods of time during
freezing weather conditions without turning off the
water supply and draining water pipes or otherwise
protecting against the risk of frozen pipes.
Frozen water pipe hazard
Your heating boiler is designed to provide a warm and
comfortable living environment. It is not designed to
ensure against freezing of water pipes. The boiler is
equipped with several safety devices that are designed
to shut down the boiler and to prevent it from restarting
in the event of various unsafe conditions.
If your boiler remains off for an extended period of time
during cold weather, water pipes may freeze and burst,
resulting in extensive water damage and conditions in
which mold could grow. Certain molds are known to
cause respiratory problems, as well as to pose other
serious health risks. In case of water damage, immediate
measures should be taken to dry out affected areas as
quickly as possible to prevent mold from developing.
If your home will be unattended for an extended period
of time during cold weather, you should...
HShut off the water supply to the building, drain the
water pipes and add an antifreeze for potable water
to drain traps and toilet tanks. Open faucets where
appropriate.
Or..
HHave someone check the building frequently during cold
weather and call a qualified service agency if required.
Or...
HInstall a reliable remote temperature sensor that will
notify somebody of freezing conditions within the
home.
For your Safety (continued)
WARNING
Incorrect ambient conditions can lead to damage to
the heating system and put safe operation at risk.
IMPORTANT
Installation area conditions
HEnsure ambient temperatures are higher than 32°F
(0°C) and lower than 104°F (40°C).
HPrevent the air from becoming contaminated by
halogenated hydrocarbons (e.g. as contained in
paint solvents or cleaning fluids) and excessive dust
(e.g. through grinding or polishing work).
Combustion air for the heating process, and ventilation
of the boiler room must be free of corrosive
contaminants. To that end, any boiler must be installed
in an area that has no chemical exposure. The list to
the right indicates the main, currently known sources.
HAvoid continuously high levels of humidity
(e.g. through frequent drying of laundry).
HNever close existing ventilation openings.
Components which are not tested with the heating
system may damage the heating system, or affect its
functions. Installation or replacement may only be
carried out by a qualified heating contractor.
Replacement components, spare and wear parts
Sources of combustion and ventilation air contaminants
Areas likely to contain contaminants:
HNew building construction
HSwimming pools
HRemodelling areas, hobby rooms
HGarages with workshops
HFurniture refinishing areas
HDry cleaning/laundry areas and establishments
HAuto body shops
HRefrigeration repair shops
HMetal fabrication plants
HPlastic manufacturing plants
HPhoto processing plants
HBeauty salons
Products containing contaminants:
HChlorine-type bleaches, detergents and cleaning
solvents found in household laundry rooms
HPaint and varnish removers
HHydrochloric acid, muriatic acid
HChlorine-based swimming pool chemicals
HSpray cans containing chlorofluorocarbons
HChlorinated waxes and cleaners
HCements and glues
HRefrigerant leaks
HCalcium chloride used for thawing
HSodium chloride used for water softening salt
HPermanent wave solutions
HAdhesives used to fasten building products and other
similar items
HAntistatic fabric softeners used in clothes dryers
Safety

7
5547 199 - 02
Vitotronic 200 Operating Operation
Where to Find the Controls
Each boiler is equipped with its own control unit for
constant temperature operation.
These control units are regulated by a higher weather-
compensated cascade control unit.
HControl unit in constant temperature mode on the boiler:
Vitotronic 200
Controls, Vitotronic 200
Takes you to the previous step in the menu or cancels
a setting that has been started.
Cursor keys
To scroll through the menu or to set values.
OK Confirms your selection or saves the setting.
? No function.
Enables you to call up the menu for settings and
scanning.
Vitotronic 200, type HO1B
How to Use the Controls, Vitotronic 200
Symbols
These symbols are not always displayed, but appear
subject to the system version and the operating state.
Flashing displays indicate that modifications can be made.
Note: If a boiler is not in operation, the following appears
in the display of the corresponding control unit:
In multi boiler systems, each Vitotronic 200 indicates
the boiler number on the standard display. The following
example shows the boiler water temperature as indicated
by boiler 4.
Messages
Service message
 Fault message
E Burner fault
Displays
pCirculation pump at output 20 is running
A Burner in operation
D Factory settings
Press .
This takes you to the menu for settings and scanning.
Menu
Information
Further adjustments
S Emissions test mode
Heating program
9 Standby mode with frost protection monitoring
The boiler is available to the cascade control unit
for heat production.
Off

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8
Central Heating
Controls Overview
Legend
AFault indicator (red)
BON indicator (green)
CReset button
DON/OFF switch
EPressure gauge (pressure display)
FVitotronic 200, type HO1B user interface
Vitodens 200-W controls with side panels open
Vitocrossal 300 CU3A controls with panel covers open
Legend
AVitotronic 200, type HO1B user interface
BVitotronic 200, type KW6B
CFault indicator (red)
DOn indicator (green)
EReset button
FON/OFF switch

9
5547 199 - 02
Vitotronic 200 Operating Central Heating
Start-up/Standby/Shutdown
1. Check the heating system pressure at the pressure
gauge. The system pressure is too low if the indicator
is below 14 psi. In this case, top up with water or
notify your local heating contractor.
2. Check that the ventilation apertures of the installation
room are open and unrestricted.
Note: With room air dependant operation, the
combustion air is drawn from the installation
room.
3. Open the gas shut-off valve.
4. Switch ON the power supply, e.g. at a separate
MCB/fuse or a main electrical disconnect.
5. Switch ON the ON/OFF switches at the Vitotronic
200 (see chapter “Controls” overview). After a short
time, the following is shown on the display:
HVitotronic 200: the standard display (see page 8)
The green ON indicator illuminates.
The boiler is now ready for heat production.
Note: On every Vitotronic 200, “ “ must be selected,
otherwise the Vitotronic 300-K cannot use the
corresponding boiler to produce heat.
Starting the heating system
Placing each boiler in standby with frost protection
monitoring
At the relevant Vitotronic 200, press the following keys:
1. for settings; “ “ flashes.
2. OK to confirm; “9 w “ flashes.
3. OK to confirm; “ w “ flashes.
4. 
until “9“ flashes.
5. OK to confirm.
Note: The boiler pumps are briefly started every 24 hours
to prevent them from seizing up.
To end the heating program “Standby mode” select
another heating program.
Shutting down the heating system without frost
protection monitoring
1. Switch OFF the ON/OFF switches at all Vitotronic
200.
2. Close the gas shut-off valve.
3. Isolate the heating system from its main power
supply, e.g. at a separate MCB/fuse or a mains
isolator.
4. Where outside temperatures of below 37°F (3°C) are
anticipated, please take suitable measures to protect
the heating system against frost. If necessary,
contact your heating contractor.
Information on a prolonged shutdown
HCirculation pumps may seize up as they are not supplied
with power.
For additional start-up, standby and shutdown
instructions related to the Vitotronic 300-K and
the system, refer to the Vitotronic 300-K MW2C
Operating Instructions,.

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10
Further Adjustments
Setting the Display Contrast
Extended menu:
1.
2. “Settings”
3. “Contrast”
4. Set the required contrast.
If you would like the texts in the menu to be more clearly
legible, change the brightness for “Control”.
You can also alter the screen saver brightness.
Extended menu:
1.
2. “Settings”
3. “Brightness”
4. “Control” or “Screen saver”
5. Set the required brightness.
Setting the Display Brightness
Selecting the Language
At the commissioning stage, the display is in German.
1. “Sprache” (Language) Deutsch DE (German)
2. Select the required language with
3. Accept by pressing OK.
To change the language
Extended menu:
1.
2. “Settings”
3. “Language”
4. Select the required language with
5. Accept by pressing OK.

11
5547 199 - 02
Vitotronic 200 Operating Further Adjustments
Setting the Temperature Unit (°C/°F)
Factory setting: °C
Extended menu
1.
2. Settings”
3. “Temperature unit”
4. Select the temperature unit “°C” or “°F”.
Restoring Factory Settings
You can simultaneously reset all changed values to the
factory settings.
Extended menu
1.
2. “Settings”
3. “Standard setting”
Factory settings:
HHeating program: “ “
HTemperature unit: °C
The time and date are factory-set. If your heating system
has been shut down for a long time, it may be necessary
to set the time and date.
Extended menu:
1.
2. “Settings”
3. “Time/Date”
4. Set the time and date.
Setting the Time and Date

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12
Further Adjustments
Calling up the Service Level
Service
Diagnosis
Actuator test
Coding level 1
Brief scan
Coding level 2
Fault history
Service functions
Terminate service?
General
Reset data
Participant check
Service PIN
Service reset
Filling
Venting
Maximum output
Enter Vitocom PIN code
Multi-boiler system
Exiting the service level
1. Select “Terminate service?”.
2. Select “Yes”.
3. Confirm with OK.
Note: The service level is automatically exited after
30 minutes.
Scanning operating data
- Operating data can be scanned in six areas.
See “Diagnosis” in the service menu overview.
Operating data on heating circuits with mixing valves
and solar can only be scanned if the components are
installed in the system. For further information on
operating data, see chapter “Brief scan”.
Note: “- - -” appears on the display if a sensor that has
been scanned is faulty.
Press OK and simultaneously for approximately 4
seconds.
Note: Do not adjust menu item “Multi-boiler system”.
The menu item turns a constant temperature
control unit into a weather-compensated control
unit.
Calling up operating data
1. Press OK and simultaneously for approximately
4 seconds.
2. “Diagnosis”
3. Select required group, e.g. “General
Resetting operating data
Saved operating data (e.g. hours run) can be reset to 0.
The value “Adjusted outside temp” is reset to the actual
value.
1. Press OK and simultaneously for approximately
4 seconds.
2. “Diagnosis”
3. “Reset data”
4. Select required value (e.g. “Burner starts”) or
“All details”.
Service menu overview

13
5547 199 - 02
Vitotronic 200 Operating
Diagnosis
The following values can be scanned, depending on the
system installed:
Scanning Options
Brief scan
In the brief scan, you can call up temperatures, software
versions and connected components, for example.
1. Press OK and simultaneously for approximately
4 seconds.
2. “Diagnosis”
3. “Brief scan”.
4. Press OK. The display shows 9 lines with 6 fields each.
Display screen
- Boiler temperature setpoint
- Boiler temperature actual
- Boiler coding card
- Brief scan 1 to 8
For an explanation of the relevant values in the individual lines and fields, see the following table:
Line
(brief scan)
Field
123 4 5 6
1: 0 System design Software version control unit Software version programming unit
2: 0 0 Appliance version Device identification ZE-ID
3: 0 0 Number of KM BUS participants 0 0
4: Software version
burner control unit
Type
Burner control unit
Burner control unit version
5: Internal details for calibration 0 Software version
AM1 extension
Software version
EA1 extension
6: 0 0 0 * Flow rate
sensor switching
state operation
1: Flow rate too
low or no flow
00
7: LON Subnet address system
number
LON Node address 0 0
8: LON SBVT
configuration
LON software
version
communication
co-processor
LON Neuron chip software version Number of LON participants
9: 0 0 0 0 0 0
10: 0 0 0 0 0 0
11: 0 0 0 0 0 0
* Only for Vitodens 200-W B2HA which are equipped
with internal flow sensing device(s).

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14
Checking Outputs (Relay Test)
1. Press OK and simultaneously for approximately
4 seconds.
2. “Actuator test”
Scanning Options
The following relay outputs can be controlled subject to system design:
Display Explanation
All actuators Off All actuators are off.
Base load On Burner operated at minimum output; circulation pump sÖ is started.
Full load On Burner operated at maximum output; circulation pump sÖ is started.
Output, internal On Output sÖ active.
Output 21/28 On Output sA active.
Outp. int. exten. H1 On Output 28/20 active.
EA1 output 1 On Contact P - S at plug aBJ of extension EA1 closed.

15
5547 199 - 02
Vitotronic 200 Operating
Scanning Service Messages
Scanning Options
If your heating system is due for a service, the symbol
““ flashes on the Vitotronic 200 display, and the
following displays are shown.
Your heating contractor can schedule maintenance work
as follows:
After a certain number of burner hours run, e.g. 05500 h
Scanning Fault Messages
If any faults have occurred in a boiler, the symbol 
flashes on the display and “Fault” is shown.
The red fault indicator also flashes (see chapter
“Controls”).
1. Notify your heating contractor of the fault code.
This enables the heating contractor to be better
prepared for the service call and may save additional
travelling costs.
2. Acknowledge the fault message with OK.
The symbol
 no longer flashes.
Note:
HIf you have connected up signalling equipment
(e.g. a buzzer) for fault messages, this is deactivated
when the fault message is acknowledged.
HIf the fault can only be fixed at a later point in time,
the fault message will reappear the following day.
Calling up an acknowledged fault message
Press OK for approx. 4 sec.
Note: If there are several fault messages, you can scan
these in sequence by pressing / .
Note:
HIf you have connected up signalling equipment (e.g.
a buzzer) for fault messages, this is deactivated when
the fault message is acknowledged.
HIf the fault can only be rectified at a later date, the fault
message will be displayed again the next day and the
signalling equipment will be switched on again.
Calling up an acknowledged fault message
Extended menu
1.
2. “Fault”
Refer to the appropriate Vitodens 200-W and
Vitocrossal 300 CU3A Service Instructions for
fault codes.

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16
Scanning Options
Emissions Test Mode
Emissions test mode for testing flue gas with boiler water
temperature raised briefly. This test mode should only be
activated by your service technician during the annual
inspection.
Test mode must be activated at the Vitotronic 200
of the boiler to be tested and also, for heat transfer, at
the Vitotronic 300-K cascade control unit.
Press the following keys:
1.
2. “test mode”.
3. Use to select “ON”
4. OK to confirm.
5. ‘ ‘ to exit
Ending emissions test mode
Press the following keys:
1. for settings; “ “ flashes.
2. until “ S “ flashes.
3. OK to confirm; “OFF” flashes.
4. OK to confirm.
Emissions test mode ends automatically after 30 min.
Refer to the Vitotronic 300-K MW2C
Operating Instructions.

17
5547 199 - 02
Vitotronic 200 Operating
Cause Remedy
A limit temperature has been reached. Press “R” (see chapter “Controls”).
Acknowledge the fault message with OK.
Notify your heating contractor of the fault code if the
fault reoccurs.
Troubleshooting
Cause Remedy
The heating program is enabled or the boiler is shut
down externally.
Set the heating program .
If necessary, notify your heating contractor.
Cause Remedy
The time for a service, as specified by your heating
contractor, has arrived.
Proceed as described on page 16.
“OFF” is Displayed at the Vitotronic 200
“ ” is Displayed at the Vitotronic 200
Cause Remedy
Heating system fault. Proceed as described on page 16.
“  ” is Displayed at the Vitotronic 200
“E“ is Displayed at the Vitotronic 200

Vitotronic 200 Operating
5547 199 - 02
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Maintenance
Cleaning
All equipment can be cleaned with a commercially
available domestic cleaning agent (non-scouring).
You can clean the front of the programming unit with
a microfibre cloth.
Inspection and maintenance
Inspection and maintenance of your heating system is
prescribed by the Energy Savings Order.
Regular maintenance ensures trouble free, energy
efficient, environmentally responsible and safe heating.
Your heating system must be serviced by an authorized
contractor at least every 2 years. For this, we advise you
to arrange an inspection and maintenance contract with
your local heating contractor.
Boiler
Increasing boiler contamination raises the flue gas
temperature and thereby increases energy losses.
For that reason, all boilers should be cleaned annually.
Damaged connecting cables
If connecting cables of the appliance or externally
installed electrical accessories are damaged, replace
them with special connecting cables. Replace only with
Viessmann cables. Contact your local heating contractor.
Additional Information
Terminology
Heating program
With the heating program you determine whether the
boiler is available for heat production to the Vitotronic
300-K MW2C or if the boiler is in standby with frost
protection active.
You can select the following heating programs:
H“Heating”
The boiler is available to the Vitotronic 300-K for heat
production.
H“Standby mode”
Frost protection for the boiler.
Heating circuit pump
Circulation pump for the circulation of the heating water
in the heating circuit.
Actual temperature
Current temperature at the time of the scan; e.g. actual
boiler temperature.
Room air dependant operation
The combustion air is drawn from the room where the
boiler is installed.
Direct vent operation
The combustion air is drawn from outside the building.
Safety valve
A safety device that must be installed by your heating
contractor in the cold water pipe. The safety valve opens
automatically to prevent excess pressure in the DHW tank.
Set temperature
Default temperature that should be reached;
e.g. set boiler temperature.
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5547 199 - 02
Vitotronic 200 Operating

Vitotronic 200 Operating
5547 199 - 02 Printed on environmentally friendly
(recycled and recyclable) paper.
Technical information subject to change without notice.