System Status; Displaying And Acknowledging Alarms - Viessmann PLC VITOCAL 350-HT PRO Operating Instructions For The System User

Operation
Programming unit

System status

To call up the "Status, system" page, tap on the but-
ton.
Fig. 5
This page provides information on the various system
statuses.
A green dot indicates an enable or normal operation.
■
A red dot indicates that there is no enable or that a
■
malfunction is present.
Conditions for enabling the heat pump:
System mains isolator ON
■
Emergency stop button inactive
■

Displaying and acknowledging alarms

To call up the "Alarm list" page, tap on the
"Alarms" button.
Operating statuses that are outside the application lim-
its trigger an alarm. Alarms must be noted and their
causes remedied in order to ensure correct system
operation. If an alarm has been triggered, the
symbol is red.
12
(cont.)
■ PSU enable present
■ No priority 1 alarm active
Heating or cooling demand present
■
Pump out, heating water buffer cylinder charging,
■
coolant buffer cylinder charging or DHW cylinder
charging is switched on
■ At least one compressor enable is present
For an "overview of the fault messages", see
page 30.
alarm