Viessmann Vitodens 200, Service Instructions Manual

Page: 32 / 116

32
Troubleshooting
Diagnosis using the control unit
(cont.)
Fault message
Display System characteristics
Control
unit for
Control unit for weather-
compensated mode with
p y
Burner
fault,
d
constant
temp.
mode
standard
programming
unit
Comfortrol
programming
unit
red
ćć U :E:ă4
or
U :E:_
Ă
_
FAULT: E4 OFF ćć
ćć U :F:ă2 FAULT: F2 OFF ćć
U ĂFĂ4 U :F:ă4 FAULT: F4 OFF ćć
ćć U :F:ă5 FAULT: F5 OFF ćć
U ĂFĂ9 U :F:ă9 FAULT: F9
(249
*1
)
OFF/ON Burner control unit fault
FĂăĂb U :F:ăb FAULT: FB Flashing Burner control unit
emergency mode
U ĂFĂd U :F:ăd FAULT: FD
(253
*1
)
ON Burner control unit fault
U ĂFĂE U :F:ăE FAULT: FE
(254
*1
)
ON Burner control unit fault
U Ă0Ă2 U :0:ă2 FAULT: 02
(002
*1
)
ON Burner control unit fault
*1
Call up display of fault codes from the fault memory.
5692Ă485
G
B