Viessmann B2HF - Page 84

84
Display Explanation
Primary circuit pump,
set speed
Set value Internal circulation pump in %
3-way valve target posi-
tion
Heating 3-way diverter valve set to heating mode
Middle 3-way diverter valve in central position (filling/draining)
DHW 3-way diverter valve set to DHW heating
Circulation pump for cyl-
inder heating
On
Off
DHW circulation pump On
Off
Group Solar (not for Vitodens 222-W)
Solar circuit pump, set
speed
Set value Speed, solar circuit pump in %
Circulation pump hy-
giene function
On
Off
Circulation pump, solar On
Off
3-way valve, solar Open
Target position Close
Stop
Diagnosis and service checks
Checking outputs (actuator test) (cont.)
5593201
Diagnosis