Viessmann VC3, Инструкция по эксплуатации

Страница: 68 / 112

Fault code
on the dis-
play System character-
istics Cause Measures
Cd Control mode Communication
fault Vitocom 100
(KM BUS) Check connections,
Vitocom 100 and coding
address "95".
CE Control mode Communication
fault, PCB for ex-
ternal connec-
tions 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 86).
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 86).
E4 Burner blocked Supply voltage
fault Replace the control unit.
E5 Burner in a fault
state Internal fault Press " E ".
Replace the control unit
if the burner will not re-
start.
Fault codes
(cont.)
68
Troubleshooting
5692
745
GB