Viessmann VITODENS 222-F Installation And Service Instructions Manual page 69

Checking outputs (actuator test)
Display
Mixer, heating circuit 2
Mixer, heating circuit 3
DHW group (domestic hot water)
Primary circuit pump,
set speed
3-way valve target posi-
tion
Cylinder loading pump
DHW circulation pump
Transfer pump hygiene
function
Circulation pump for cyl-
inder heating
Solar group
Solar circuit pump, set
speed
Transfer pump hygiene
function
Solar circulation pump
Solar 3-way valve, tar-
get position
(cont.)
Explanation
Open Output for "Mixer open" enabled (mixer extension kit)
Stop Current position is maintained
Close Output for "Mixer close" enabled
Open Output for "Mixer open" enabled (mixer extension kit)
Stop Current position is maintained
Close Output for "Mixer close" enabled
Set value Internal circulation pump in %
Heating Diverter valve set to heating mode
Middle Diverter valve in central position (filling/draining)
DHW Diverter valve set to DHW heating
On
Off
On
Off
On
Off
On
Off
Set value Speed, solar circuit pump in %
On
Off
On
Off
Open
Close
Stop
Diagnosis and service checks
69