Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual page 133

Fault codes
(cont.)
Dis- Const.
played
fault
code
EE X
Weath.- System char-
comp. acteristics
X Burner in a fault
state
Troubleshooting
Cause Measures
Flame signal Check gas supply
is not present (gas pressure and
or too weak at gas flow switch).
burner start Check gas train.
Check ionisation
electrode and con-
necting cable.
Check ignition:
■ Connecting
leads to ignition
module and igni-
tion electrode
■ Ignition elec-
trode gap and
contamination
(see page 52)
Check condensate
drain.
Press reset button
R
133