Viessmann Vitotron 100 Operating Instructions For The System User page 20

Operation
Control panel VLN3
Main display
9:37 Mo 12.08.201
61°
45
21
Heat transfer display
A
Return temperature
B
Flow temperature
C
Preset flow temperature or symbol
D
(if heating is blocked by a signal from
the higher ranking appliance)
Fault in appliance
Circulation pump in operation (flashing means that the minimum flow rate has not been reached)
Circulation pump is being vented
Heating signal blocked by master appliance
Central heating enabled
Heat demand from room thermostat (with internal controller switched off)
Heat transfer
DHW heating
Central heating
Central heating program version display:
According to the daily/weekly schedule
PARTY – maintain a pleasant DHW temperature
HOLIDAY – maintain a pleasant, energy saving DHW temperature or frost protection
Pasteurisation of DHW heating
20
(cont.)
9
°
°
9:37 Mo 12.08.201
85°
65
42
DHW temperature
E
Active DHW program
F
Display for room temperature control contact
G
sealed unvented (central heating command)
9
32°
°
°