Circulation Pumps - Viessmann PLC VITOCAL 350-HT PRO Service Instructions For Contractors

Diagnosis
Operating conditions and actuator tests

Circulation pumps

Launch with the circulation pump symbol
Fig. 34 Example
The following information is displayed:
■ "Op."
"Y" (green) Circulation pump is on
"N" Circulation pump is off
"Hours run"
■
Display of hours run by the circulation pump
■ "Activations"
Display of circulation pump activation processes
48
(cont.)
Buttons:
■ "Reset"
The "Hours run" and "Activations" counters are
reset
Note
■
Only service level users can change the operating
mode manually.
See page 11.
The current operating mode illuminates green.
"OFF" Circulation pump manually off
"ON" Circulation pump manually on
"AUTO" Circulation pump is being controlled by the
system