Viessmann Vitobloc 200 EM-50/81 Operating Instructions Manual page 39

Programming
Cancel value selection
●
cancel a value selection (value change) with key C
●
select a value again as described above; change
the field selection
●
back with key C until field selection (underlined
once) is displayed again
●
select field and value again (value change) as
described above
Important for test runs:
NOTE:
In order to check and test operating
values in the manual mode, it is possi-
ble to return to levels 1 or 2 with func-
tion key F6.
●
In the case of longer test runs, press any key (such
as F6) at least every 60 min.
VITOBLOC 200 Operating instructions for the natural gas-fuelled CHP module
NOTE:
All passwords will be erased automati-
cally, if no key has been pressed within
60 min.
4.4.3 Erasure of passwords
WARNING
As a means of protection against unau-
thorized use and access, all passwords
must be erased after the work has been
completed.
●
Press key C for 5 sec, on which the screen with
basic configuration will be displayed again. The
LED "Fault" stops flashing and all passwords have
been erased.
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