Troubleshooting - Vitotronic 300-K, Mw1S Faults With Fault Display At The Programming Unit - Viessmann Vitotronic 100 GC1 Installation And Service Instructions Manual

Faults displayed at the programming unit
1
Fault
2
57
Fr
3
A
Outdoor temp. sensor
D B G - 1 10
1
Fault
D B G - 2 d5
1
D B G U Fault symbol
2 Consecutive number (1 to 10)
d5 Fault code (for explanations see
from page 100)
Red fault indicator A flashes for
all faults.
If a fault message is recognized,
the display flashes Fault.
Finding the fault
1. Press .
2. Call up further fault codes
with or .
The fault can be acknowledged with
. The fault message in the display
will be hidden, but red fault lamp A
continues to flash. A new fault
message will be displayed if an
acknowledged fault is not removed
by the following morning.
A central fault messaging device
connected to plug gÖ will be
activated.
Troubleshooting – Vitotronic 300-K, MW1S
99