Viessmann Vitodens 200 Service Manual page 83

Checking and acknowledging faults
Fault code Const.
in the dis-
play
FA X
Fd X
FE X
Weat- System
h. character-
comp. istics
X Burner in
fault state
X Burner
blocked
X Burner
blocked
Troubleshooting
(cont.)
Cause Remedy
Fan stop not Check the
achieved fan, check the
fan cables,
check the fan
control
Press E
Burner control unit Check the
fault ignition elec-
trodes and
leads. Check
whether a
strong inter-
ference
(EMC) field
exists near
the equip-
ment.
Press E
If the fault is
not removed,
replace the
control unit.
Strong interference Remove EMC
(EMC) field nearby; interference.
alternatively boiler If the equip-
coding card or ment will not
main PCB faulty. restart, check
the boiler
coding card
and replace,
or replace the
control unit.
83