Fault Messages On The Display - Viessmann Vitodens 100-W WB1B Installation And Service Instructions Manual

Fault messages on the display

Fault code System character-
on the dis- istics
play
10 Constant mode
18 Constant mode
30 Burner blocked
38 Burner blocked
50 No DHW heating
51 No DHW heating
52 Burner blocked
58 No DHW heating
59 No DHW heating
Faults are indicated by a flashing fault
code with fault symbol "U" on the dis-
play.
For fault code explanations see the
following table.
Cause Measures
Outside tempera- Check the outside tem-
ture sensor perature sensor and
shorted out lead (see page 37).
Outside tempera- Check the outside tem-
ture sensor lead perature sensor and
broken lead (see page 37).
Boiler water tem- Check the boiler water
perature sensor temperature sensor (see
shorted out page 39).
Boiler water tem- Check the boiler water
perature sensor temperature sensor (see
lead broken page 39).
Cylinder tempera- Check the sensor (see
ture sensor page 40).
shorted out
Outlet tempera- Check the sensor (see
ture sensor page 42).
shorted out
Throughput sen- Check connections and
sor shorted out lead; replace sensor if
required.
Cylinder tempera- Check the sensor (see
ture sensor lead page 40).
broken
Outlet tempera- Check the sensor (see
ture sensor lead page 42).
broken
Troubleshooting
33