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130
Dis-
played
fault
code
Const.
Weath.-
comp.
System char-
acteristics
Cause
Measures
Ed
X
X
Burner in a fault
state
Internal error
Replace control
unit.
EE
X
X
Burner in a fault
state
No or inade-
quate flame
signal at
burner start.
Check gas supply
(gas pressure and
gas flow switch),
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 46).
Check condensate
drain.
Press reset button
R
.
Troubleshooting
Fault codes
(cont.)
5585 174 GB