Viessmann VITOCROSSAL 200 Instructions Manual page 36

Burner control unit
Display
Operating display in
standard mode
Operating display for
operation deviating
from the standard con-
dition
Service display
Fault display
Manual mode and service display
To call up the service display and for manual mode, a heat demand must be issued
by the control unit. The service display shows the current level of modulation in %.
Display:
"d 00" lower output
"d 00." upper output (with the full stop behind the last digit)
Status Service
36
(cont.)
Status
(single digit)
Current operating
condition, see
pages 34 and 35
Message code "A" or
"L", see the table on
page 41
Message code "d",
see page 36
Message code "F",
see the table on
page 41, display
flashes
Service
(two digits)
Display "FL" if a flame
signal is present
—
Current level of modu-
lation
Fault code display
flashes, see
page 41
1. Press b and S simultaneously; the
burner enters manual mode. The dis-
play shows "d" under status.
2. Adjust the lower output: Press b
until "d 00" is shown.
3. Adjust the upper output: Press a
until "d 00." is shown.
4. Press b and S simultaneously; the
burner returns to modulating mode.
see
Page 35
—
Page
36
Page
41