Calling Up Fault Messages - Viessmann VITOLIGNO 300-C Operating Instructions For The System User

Checks
Calling up information
4. / for "General", "Boiler", "Heating" or
| ~
"DHW".
The following overviews show the tempera-
tures displayed in the sub-menus.
5. to confirm.
d
Temperatures in the "General" sub-menu:
Outside temperature
■
Set system temperature
■
Temperatures in the "Boiler" sub-menu:
■ Boiler water temp
■ Boiler return
Flue gas temperature
■

Calling up fault messages

If any faults have occurred in your heating system, the
symbol " " flashes in the display and "Fault" is
shown.
The heating contractor uses fault messages to quickly
pinpoint the cause of your boiler's fault. This can
reduce the time required to resolve the fault and there-
fore also your costs.
Make a note of the fault message displayed so you
can advise your heating contractor accordingly. This
makes preparations easier and may save extra travel
expenses.
Danger
Unresolved faults in the heating system repre-
sent a risk
■ If a fault occurs, shut the system down and
make it safe.
Contact your heating contractor immediately.
■
Rectify the fault immediately or have a heating
■
contractor rectify it if necessary.
■ When rectifying the fault, no-one else should
be present in the danger zone around the
heating system.
1. You can call up the cause of the fault with
Fault
Outside temp sensor
Fault O2 probe
Acknowledge with
Fig. 38
2. Pressing ? calls up information on the heating sys-
tem characteristics.
Tips on which measures you can take yourself
before notifying your heating contractor are also
displayed.
40
(cont.)
.
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34
91
OK
Temperatures in the "Heating" sub-menu:
■ Set room temperature
Set reduced room temperature
■
Set flow temperature
■
■ Actual flow temperature
Temperature in the "DHW" sub-menu:
■ Set DHW temperature
Actual DHW temperature
■
Set return temperature
■
■ Actual return temperature
3. Make a note of the cause of the fault and the fault
code next to it on the right. In this example: "Out-
side sensor 34" and "Fault O2 probe 91".
This enables the heating contractor to be better pre-
pared for the service call and may save additional
travelling costs.
4. If you want to acknowledge the fault message, fol-
low the instructions in the menu.
The fault message is adopted into the menu.
Boiler water temp
Fault
Boiler
Buffer
Heating
Continue with
Fig. 39
Note
■ Acknowledging the fault message turns off any
connected alarm facility for fault messages (e.g. a
horn).
■ If the fault can only be rectified at a later date, the
fault message is displayed again the next day and
the alarm is switched on again.
Calling up an acknowledged fault message
Press the following keys:
1. repeatedly until the standard menu is dis-
ä
played.
2. / for "Fault".
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3. to confirm.
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4. / to select the required fault.
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5. to confirm.
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48°C
OK