Viessmann Vitocal 300-G BW, Installation And Service Instructions Manual

Page: 112 / 216

112
1. Fault (highest priority)
2. Warning (medium priority)
3. Note (lowest priority)
Fault
■ Standard display: The fault symbol
"
U
" flashes on the l.h. side at the bot-
tom of the display (display area for cur-
rent operating states).
■ The central fault message terminal
(2X7.12/2X7.13) is activated.
■ The red LED (indicator) adjacent to the
programming unit flashes.
■ The fault message with an additional
identifier appears in the display.
■ Message via communication facility
(e.g. Vitocom).
■ Faults are written to the "Fault mes-
sages" and "Message history" lists.
■ The machine is no longer in standard
mode; the fault must be removed as
quickly as possible .
Warning
■ Standard display: The warning symbol
" ! " flashes on the l.h. side at the bottom
of the display (display area for current
operating states).
■ The warning as plain text with an addi-
tional identifier appears in the display.
■ The display of warnings is subject to
access rights.
■ Warnings are written to the "Fault
messages" and "Message history"
lists.
■ The appliance continues to operate
without limitation, however the cause
for the warning must be removed.
■ Recommendation : To scan further
warnings enter the access code for
contractors (see page 107).
Note
■ Standard display: The note symbol " i "
flashes on the l.h. side at the bottom of
the display (display area for current
operating states).
■ The note as plain text with an addi-
tional identifier appears in the display.
■ The display of notes is subject to
access rights.
■ Notes are written to the "Fault mes-
sages" and "Message history" lists.
■ The appliance retains its functionality,
however the information needs to be
noted.
■ Recommendation : To scan further
notes enter the access code for con-
tractors (see page 107).
Calling up messages
This is where all messages are dis-
played. Messages with the highest pri-
ority are shown at the top in the display.
The most recent message is shown at
the top where several messages have
the same priority. Access
■ Press " Standard display " (see
page 111)
■ "BACK"
■ " Device settings "
■ " Access rights "
■ Enter code: 5243
■ "OK"
Troubleshooting
Control unit diagnostics
(cont.)
5368 522 UAE