Viessmann VITODENS 100-W Manual page 64

Störungsbehebung
Fault finding
(Fortsetzung)
Display Verhalten der An-
fault code lage
0b Burner blocked
30 Burner blocked
38 Burner blocked
60 Control mode
68 Control mode
b1 Control mode
b5 Control mode
E4 Burner blocked
E5 Burner blocked
F0 Burner blocked
F2 Burner in fault state
F3 Burner in fault state
64
Störungsursa-
Maßnahme
che
Flow of Water to Check the circulation
low. pump.
Air in heat exc- Vent the heating sys-
hanger. tem.
Flow switch faul- Check the interconnec-
ty. ting cable.
Boiler temperatu- Check the boiler tempe-
re sensor shorted rature sensor (see
out page 67).
Boiler temperatu- Check the boiler tempe-
re sensor lead rature sensor (see
break page 67).
Return tempera- Check the return tempe-
ture sensor short- rature sensor (see
ed out page 67).
Return tempera- Check the return tempe-
ture sensor lead rature sensor (see
break page 67).
Communication Check connections and
fault programm- replace the programm-
ing unit (internal) ing unit, if necessary.
Internal fault Replace control unit.
Fault supply Replace control unit.
voltage
Internal fault Check the ionisation
electrode and leads.
Press Reset .
Internal fault Replace control unit.
Temperature limi- Check the heating sys-
ter has respon- tem water level. Check
ded. the circulation pump.
Vent the heating sys-
tem. Check the tempe-
rature limiter and leads.
Press Reset .
The flame signal Check the ionisation
is already present electrode and leads.
at burner start. Press Reset .