Viessmann VITOTRONIC 100 GC1 Installation And Service Instructions Manual page 100

Troubleshooting
Diagnosis
Faults with fault display on the programming unit
1 2 3 4 5 6 7
100
The red fault indicator 2 flashes whenever there is a fault.
When a fault message is transmitted,
a fault code flashes in the display 1
of the programming unit.
Other fault codes which may be
stored can be called up by pressing
the or button.
Fault symbol
Fault code
Fault number
Vitotronic 100 as error manager
A fault on another LON participant is
displayed as shown:
Fault symbol
LON participant number of the unit
with the fault
"EE" = External fault
To retrieve an acknowledged
fault message
Press for approx. 2 seconds;
select the acknowledged fault by
pressing the or button.
The meaning of the fault code is
explained in the table on page 101
onwards.
The fault can be acknowledged by
pressing .The fault message in
the display 1 is blanked out; the
red fault indicator 2 continues to
flash. The central fault indicator
connected to plug gÖ is switched
off.
If an acknowledged fault is not
rectified within 24 hours, the fault
message will re-appear in the
display.
Fault is displayed.