Viessmann Vitocrossal 200 CM2 186 Service Instruction page 44

Burner Control Unit
Burner Control Unit
Information and configuration display
The information display and the configuration display are
activated from the operating display. The menu selection
is activated by pressing button S for longer than 2 seconds.
You can scroll through the menu items with
item is selected by pressing button S again and will be
displayed under Status.
This mode is automatically terminated if no other key is
pressed within 20 seconds.
Information regarding current meter readings, such as
the start counter and permanent hours run meter, can
be called up via the information display.
Information
Menu item Description
1 Continuous meters for start-ups and hours run
2 Meters for start-ups and hours run that
can be reset
3 Software version
4 Fault history for the last 10 fault codes
Example: to delete the hours run meter, press the
following buttons:
1. S longer than 2 seconds " " flashes
2. until "2" is shown under Service.
Y
3. S "1" will be displayed under Status
Menu items "5" and "6" are used to adjust configuration
settings of the burner control unit.
Note: Only make adjustments when the burner control
unit is on standby.
4. Scroll through Status until "6" is shown under
Y
Status:
Status Description
1 Display of start-up meter with reset, 1 digit
2 Display of start-up meter with reset, 1000 digit
3 Menu item for deleting the start-up meter reading
4 Display of hours run meter with reset, 1 digit
5 Display of hours run meter with reset, 1000 digit
6 Menu item for deleting the hours run meter reading
5. S to confirm the deletion. If deleted successfully, "1"
will be shown under Service, "0" if it failed.
6. S to change to the operating display.
Menu items "5" and "6" are used to adjust configuration
settings of the burner control unit.
Note: Only make adjustments when the burner control
unit is on standby.
44
(continued)
. A menu
Y B
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Vitocrossal 200 CM2 186 to 311 Service
Control parameter R62 "Rotational speed minimum input"
The parameter has the consequence that after a "fail of
flame during operation" the burner can't be modulated
in partial load (20%) in modulated operational mode for
one hour. At this time the new level for parameter R62 is
input load (50-60%).
To reset this setting earlier than one hour, you have to
press the reset button R or switch off the burner control.
If the boiler goes into stand by mode before the time has
elapsed the settings are not reset.