Viessmann VITOPEND 200 Installation And Service Instructions Manual page 87

Fault codes
(cont.)
Display Const. Weath.‐
fault comp.
code
FF X X
System char- Cause
acteristics
Burner Internal fault
blocked
Troubleshooting
Remedy
If equipment will
not restart, re-
move the EMC
field, check the
boiler coding card
and replace it or
the control unit, if
required
87