Calling Up Fault Codes From The Fault Memory (Fault History); Fault Codes - Viessmann Vitodens 333 Service Instructions Manual

Calling up fault codes from the fault memory (fault history)

The 10 most recent faults are saved
and may be scanned.
The faults are ordered according to
date, thus the most recent fault is fault
number 1.

Fault codes

Fault Const. Weath.-
code in comp.
the dis-
play
0F X X
10 X X
18 X X
20 X X
28 X X
1. G + d simultaneously for
2. a/b
3. Note
All saved fault codes can be
deleted with e.
4. d
System char- Cause
acteristics
Control mode Maintenance Carry out mainte-
Controls as if Outside tem-
the outside perature
temperature sensor
was 0 °C shorted out
Controls as if Outside tem-
the outside perature
temperature sensor lead
was 0 °C broken
Regulated System flow
without flow temperature
temperature sensor
sensor (low shorted out
loss header)
Regulated System flow
without flow temperature
temperature sensor lead
sensor (low broken
loss header)
Troubleshooting
approx. 2 s
for individual fault
codes.
Terminate the scan.
Remedy
nance. After the
maintenance, set
code "24:0".
Check the outside
temperature sen-
sor (see page 79)
Check the outside
temperature sen-
sor (see page 79)
Check the low
loss header sen-
sor (see page 80)
Check the low
loss header sen-
sor (see page 80)
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