Fault Display - Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual

Troubleshooting

Fault Display

96
Vitoligno 300-C Installation/Service
Fault display:
"Fault" is displayed.

The red fault indicator flashes.

A central fault message facility connected to terminal
gÖA is switched on.
Checking and acknowledging faults
Note: If an acknowledged fault is not removed, the fault
message will be re-displayed the following day at
7:00 am (07:00 h):
Press the following keys:
1. d for troubleshooting.
2. to display further fault messages if there are
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several faults.
3. d to "Acknowledge" the fault message.
4. for "Yes" or "No".
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5. d to confirm.
To restart the boiler after faults have been rectified,
press the "START" button.
Calling up acknowledged fault messages
Press the following keys:
1. å.
2. for "Fault messages".
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3. d to confirm.
4. for the list of current faults.
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Fault displays in plain text
The following faults are displayed as plain text.
The meaning of the fault and the fault codes are detailed
in the table on page 97.
"Excess temperature"

"Repeat heat-up"

"Fault, O probe"
 2
"Boiler supply"

"Boiler return"

"Flue gas sensor"

"Outdoor sensor"

"Buffer tank sensors"

"Supply sensor"

"DHW sensor"

"Return sensor"

"KM-BUS"
