Viessmann Vitoligno 300-C Installation And Service Instructions Manual page 106

Troubleshooting
Fault codes
(cont.)
Displayed fault System characteristics
code
2A Burner locked out
30 Burner locked out
31 Return temperature raising
■
facility valve opening
Boiler circuit pump starts
■
32 Burner locked out
33 Burner locked out
*10
34 Control unit set to 0 °C out-
side temperature
35 No DHW heating
36 Control mode
37 Control mode
38 Control mode
39 Control mode
3A Burner locked out
3B Burner locked out
3C Burner locked out
3D Burner locked out
3E Burner locked out
3F Burner locked out
41 No control mode at heating
circuit 1 (KM-BUS)
42 No control mode at heating
circuit 2 (KM-BUS)
43 No control mode at heating
circuit 3 (KM-BUS)
44 No room influence at remote
control with room tempera-
ture capture 1 (KM-BUS)
45 No room influence at remote
control with room tempera-
ture capture 2 (KM-BUS)
46 No room influence at remote
control with room tempera-
ture capture 3 (KM-BUS)
This fault is only generated when a wideband probe including a separate BLS PCB are being used.
*10
106
Cause
Short circuit, feed tube
contact temperature sen-
sor
Lead break, boiler flow
temperature sensor
Lead break, boiler return
temperature sensor
Lead break, flue gas tem-
perature sensor
Lambda probe fault
Lead break, outside tem-
perature sensor
Lead break, buffer tem-
perature sensor 1 (top)
Lead break, buffer tem-
perature sensor 2
Lead break, buffer tem-
perature sensor 3
Lead break, buffer tem-
perature sensor 4
Lead break, buffer tem-
perature sensor 5
Lead break, feed tube
contact temperature sen-
sor
Grate runs for too long
Grate does not reach limit
position
Ash box not fitted
Current flue gas fan speed
does not match set speed
Too little water in the ex-
tinguishing water tank
Lead break to extension
kit 1 (KM-BUS)
Lead break to extension
kit 2 (KM-BUS)
Lead break to extension
kit 3 (KM-BUS)
Lead break to remote con-
trol with room temperature
capture 1 (KM-BUS)
Lead break to remote con-
trol with room temperature
capture 2 (KM-BUS)
Lead break to remote con-
trol with room temperature
capture 3 (KM-BUS)
Measures
Check contact temperature sensor
in feed tube
Check boiler flow temperature sen-
sor
Check boiler return temperature
sensor
Check flue gas temperature sensor
Cleaning and calibrating the Lamb-
da probe
Check outside temperature sensor
Check buffer temperature sensor
Check buffer temperature sensor
Check buffer temperature sensor
Check buffer temperature sensor
Check buffer temperature sensor
Check contact temperature sensor
in feed tube
Check grate for ease of operation
Check grate for ease of operation
Check ash box position
Check flue gas fan
Top up with water
Check connection to extension
kit 1
Check connection to extension
kit 2
Check connection to extension
kit 3
Check connection to remote con-
trol with room temperature cap-
ture 1
Check connection to remote con-
trol with room temperature cap-
ture 2
Check connection to remote con-
trol with room temperature cap-
ture 3