Fault
code
on the
display
Const.
Weath.-
comp.
System char-
acteristics
Cause
Measures
FC
X
X
Burner in a
fault state
Gas train
faulty or
faulty modu-
lation valve
control; or
flue gas path
blocked
Check the gas
train. Check the
flue gas system.
Press "
E
RESET".
Fd
X
X
Burner
blocked
Fault at the
burner con-
trol unit
Check ignition
electrodes and
connecting
cables. Check the
boiler coding
card. Check
whether a strong
interference
(EMC) field exists
near the equip-
ment. Confirm
"
E
RESET" : Re-
place control unit
if the fault per-
sists.
FE
X
X
Burner
blocked or in a
fault state
Strong inter-
ference
(EMC) field
nearby or
faulty main
PCB
Start the equip-
ment again. Re-
place the control
unit if the equip-
ment will not re-
start.
FF
X
X
Burner
blocked or in a
fault state
Internal fault
or "
E
RESET" key
blocked.
Start the equip-
ment again. Re-
place the control
unit if the equip-
ment will not re-
start.
Fault codes
(cont.)
80
Troubleshooting
5692
761
GB
Summary of Contents for Vitodens 200-W WB2B Series
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