Viessmann Vitocrossal 200 Service Instructions For Contractors page 46

Burner control unit
Burner control unit
Resetting operating parameters to their delivered condition
To reset all operating parameters to their
delivered condition, press the following
keys:
1. S longer than 2 s, " " flashes.
2. until "6" is shown under Service.
3. S "6" will be displayed under Sta-
tus.
Manual mode and service display
The burner must be running to call up the service display and for manual mode. The
service display shows the current modulation level in %.
Hold down the following keys:
1. /S simultaneously for longer than
2 s.
The burner changes to manual
mode, a "P" will be shown
under Status and the current
modulation level will flash
under Service.
2. for lower heating output,
until "0" is shown under Serv-
ice.
3. for upper heating output,
until "100" is shown under Serv-
ice.
4. /S simultaneously for longer than
2 s.
The burner returns to modulat-
ing mode.
46
(cont.)
4.
5. S "1" is shown under Status and
6. S to confirm. If reset successfully,
7. S to change to the operating dis-
until "0" is shown under Service.
"dEL" under Service.
"1" will be shown under Service; if
it failed, "0" will appear.
play.