Viessmann Vitodens 200-W Series Installation And Service Instructions Manual page 81

Fault codes
(cont.)
Displayed Const.
fault code
Cd X
CF
d6 X
d7 X
d8 X
dA
db
dC
dd
dE
dF
E0
E1 X
Weath.- System characteris-
comp. tics
X Control mode
X Control mode
X Control mode
X Control mode
X Control mode
X Control mode without
room influence
X Control mode without
room influence
X Control mode without
room influence
X Control mode without
room influence
X Control mode without
room influence
X Control mode without
room influence
X Control mode
X Burner in a fault state Ionisation current
Cause Measures
Communication er- Check connections,
ror, Vitocom 100, Vitocom 100 and coding
type GSM address "95" in group
"General"/1
Communication er- Replace LON communi-
ror, LON communi- cation module
cation module
Input DE1 reports Remove fault at appliance
a fault at extension concerned
EA1
Input DE2 at exten- Remove fault at appliance
sion EA1 reports a concerned
fault
Input DE3 at exten- Remove fault at appliance
sion EA1 reports a concerned
fault
Short circuit, room Check room temperature
temperature sen- sensor, heating circuit 1
sor, heating circuit
1 (without mixer)
Short circuit, room Check room temperature
temperature sen- sensor, heating circuit 2
sor, heating circuit
2 (with mixer)
Short circuit, room Check room temperature
temperature sen- sensor, heating circuit 3
sor, heating circuit
3 (with mixer)
Lead break, room Check room temperature
temperature sen- sensor for heating circuit
sor, heating circuit 1 and remote control set-
1 (without mixer) tings (see page 101)
Lead break, room Check room temperature
temperature sen- sensor for heating circuit
sor, heating circuit 2 and remote control set-
2 (with mixer) tings (see page 101)
Lead break, room Check room temperature
temperature sen- sensor for heating circuit
sor, heating circuit 3 and remote control set-
3 (with mixer) tings (see page 101)
Fault, external LON Check connections and
subscriber LON subscribers
Check gap between ioni-
too high during cal- sation electrode and burn-
ibration er gauze assembly (see
page 32).
In open flue operation,
prevent high incidence of
dust in the combustion air.
Press reset button R.
Troubleshooting
81