Viessmann VITOLIGNO 250-S Operating Instructions Manual page 34

Further adjustments
Restoring factory settings
The following settings and values of the selected
parameter group are reset:
Set room temperature
■
Set DHW temperature
■
■ Time program for central heating
■ Time program for DHW heating
■ Time program for DHW circulation pump
■ Party mode is deleted
Economy mode is deleted
■
Holiday program is deleted
■
■ Heating curve slope and level
34
(cont.)