Viessmann VITOTRONIC 300 Installation And Service Instructions Manual page 43

Weather-compensated digital boiler and heating circuit control
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Faults with fault display at the programming unit
Fault display design
D B G -
1
10
1
1
10
Fault display in plain text
H
H
H
H
H
H
H
Calling up acknowledged fault
messages
d
a
b
43

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