Viessmann VITOCAL 300, Installation And Service Instructions Manual

Page: 58 / 160

Acknowledging fault messages
Any active fault messages will be dis-
played after opening the programming
unit flap. These can be acknowl-
edged, as soon as their cause has
been removed. After acknowledging a
fault the control unit checks, whether
the fault has been removed. If that is
not the case, then the fault will be
redisplayed as unacknowledged. Acknowledged faults remain in the
list, until the control unit has recog-
nised that the cause of the fault has
been removed.
& Press " OK " to acknowledge the
highlighted fault message
& Press " ALL " to acknowledge all
fault messages
Scanning fault messages
There are two different options for
scanning fault messages.
Scanning current fault messages
Menu item
&
" Information "
& " Fault messages "
The fault messages can be
acknowledged as described on
page 55.
&
" BACK "
Scanning all stored ("historic") fault messages
Menu item
&
" Information "
&
" Statistics "
&
" Error history "
–
Press " TIME ", to display the time
of the fault occurrence
–
Press " FAILURE " to return to the
fault description.
&
" BACK "
Note
The fault messages cannot be
acknowledged in the fault history.
Control unit diagnostics
(cont.)
58
Troubleshooting
55
92
901
GB