Viessmann Vitoligno 300-P Service Instructions For Contractors page 73

Temperatures, boiler coding card and brief...
Digital inputs 2
Position
A Pellet sensor on plug aNJ
B Pellet sensor on plug aNH
C Pellet sensor on plug aNG
D Feedback, cleaning motor
E External demand
F External blocking
Digital outputs
Diagnosis
Status dig. ...
0 0 0 0 0 0 0 0
A B C D E F G H
Digital outputs 1
Position
A Charge motor
B Discharge motor
C
Discharge motor, discharge container
D —
E Vacuum module
F Cleaning motor
G Deslagging solenoid
H
Ignition
(cont.)
Status
0 1
Pellets are in No pellets are in
front of the sen- front of the sen-
sor sor
Pellets are in No pellets are in
front of the sen- front of the sen-
sor sor
Pellets are in No pellets are in
front of the sen- front of the sen-
sor sor
No feedback Feedback ena-
bled
Input aVD open Input aVD
closed
Input aVD open Input aVD
closed
Status
0 1
OFF ON
OFF ON
OFF ON
— —
OFF ON
OFF
Drive OFF Drive ON
Switched OFF Switched ON
Service scans
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