
83
Fault
code on
the dis-
play
Const.
weath.-
comp.
System char-
acteristics
Cause
Measures
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.
Replace the control
unit if the equip-
ment will not
restart
FF
X
X
Burner blocked
or in a fault
state
Internal fault
or "
E
RESET" key
blocked
Start the equip-
ment again.
Replace the control
unit if the equip-
ment will not
restart
Repairs
Checking the outside temperature sensor (weather-compensa-
ted control unit)
X3
-40 -30 -20 -10 0 10 20 30
Outside temperature in °C
400
420
440
460
480
500
520
540
560
580
600
Resistance in
Ω
1.
Pull plug "X3" from the control unit.
Troubleshooting
Fault codes
(cont.)
5692 760 GB
Summary of Contents for VITOCONTROL-S, WB2B
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