Resetting Operating Parameters To Their Delivered Condition; Manual Operation And Service Display - Viessmann Vitocrossal 200 Service Instructions For Contractors

Burner control unit VUC 310

Resetting operating parameters to their delivered condition

1. S longer than 2 s, " " flashes.
2. until "6" is shown under Service.
3. S "6" is displayed under Status.
4. until "0" is shown under Service.

Manual operation and service display

To call up the service display and for manual operation
the burner must be running. The service display shows
the current modulation level in %.
Press the following keys:
1. /S simultaneously for longer than 2 s.
The burner changes to manual mode and a
"P" will be shown under Status. The current
modulation level will flash under Service.
(cont.)
5. S "1" is shown under Status and "dEL" under Serv-
6. S to confirm. If reset successfully, "1" is shown
7. S to change to the operating display.
2.
3.
4. /S simultaneously for longer than 2 s.
ice.
under Service; if it failed, "0" is shown.
for the lower heating output, until "0" is shown
under Service.
for the upper heating output, until "100" is
shown under Service.
The burner returns to modulating mode.
Burner control unit
37