Viessmann VITOLADENS333-F, Инструкция по эксплуатации

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Fault code
on the dis-
play System character-
istics Cause Measures
C7 Control mode, max.
pump speed Communication
fault
– external
variable speed
heating circuit
pump, heating
circuit A1
Check the setting of
coding address "E5".
Cd Control mode Communication
fault Vitocom 100
(KM BUS) Check connections,
Vitocom 100 and coding
address "95".
CE Control mode Communication
fault
– ext. exten-
sion
Check connections and
coding address "2E".
CF Control mode Communication
fault, LON com-
munication mod-
ule Replace the LON com-
munication module.
dA Control mode with-
out room influence Room tempera-
ture sensor, heat-
ing circuit A1
shorted out Check the room tem-
perature sensor, heating
circuit A1.
db Control mode with-
out room influence Room tempera-
ture sensor, heat-
ing circuit with
mixer M2 shorted
out Check the room tem-
perature sensor, heating
circuit with mixer M2.
dd Control mode with-
out room influence Room tempera-
ture sensor, heat-
ing circuit A1 lead
broken Check the room tem-
perature sensor, heating
circuit A1 and the re-
mote control DIP switch
settings (see page 93).
dE Control mode with-
out room influence Room tempera-
ture sensor, heat-
ing circuit with
mixer M2 lead
broken Check the room tem-
perature sensor, heating
circuit with mixer M2
and the remote control
DIP switch settings (see
page 93).
E4 Burner blocked Supply voltage
fault Replace the control unit.
Fault codes
(cont.)
71
Troubleshooting
5692
779
GB