Troubleshooting Control Unit Diagnostics - Viessmann Vitocal 200-G Installation And Service Instructions Manual

Troubleshooting
Control unit diagnostics
& Messages with lower priority will be
deleted if there are messages with
higher priority (than those already
stored).
& In case of messages with the same
priority (as those already stored),
older messages will be deleted.
& Messages with lower priority (than
those already stored) will not be
stored.
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. Following acknowl-
edgement, the control unit checks
whether the fault has been remedied.
If this is not the case, the fault is re-
displayed as not acknowledged.
Scanning fault messages
There are two different options for scanning fault messages.
Scanning all fault messages
Menu item
& "Information"
& "Fault messages"
The fault messages can be
acknowledged as described on
page 114.
& "BACK"
114
(cont.)
Active faults are displayed in accor-
dance with their respective priority.
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