Troubleshooting; Fault Display - Viessmann VITOLIGNO 300-P Service Instructions Manual

Troubleshooting

Fault display

Faults are shown on the display with the message "Fault" and the red fault indicator
flashing.
A central fault message facility connected to plug gÖ will be switched on.
Checking and acknowledging faults
Note
If an acknowledged fault is not removed,
the fault message will be redisplayed the
following day at 07:00 h.
Press the following keys:
1. d for troubleshooting.
2. |/~ to display further fault mes-
sages if there are several
faults.
Calling up acknowledged fault messages
Press the following keys:
1. "MENU".
2. |/~ for "Fault messages".
Plain text fault display
The following faults are displayed as plain text. The meaning of the fault and the fault
code shown to the right are given in the table on page 88.
■ "Outside sensor"
■ "Sensor 2 M1"
■ "Sensor 2 M2"
■ "Boiler sensor"
■ "Flame sensor"
■ "Lambda probe"
■ "Cylinder sensor"
■ "Buffer sensor"
86
3. d to "Acknowledge" all fault
messages.
4. |/~ for "Yes" or "No".
5. d to confirm.
3. d to confirm.
4. |/~ for the list of current faults.
■ "Collector sensor"
■ "Solar DHW sensor"
■ "Solar control unit"
■ "Programming unit"
■ "Remote control"
■ "Room temp. sensor"
■ "Communication"
■ "Coding card"