Viessmann VITOPEND 200 - Page 87

Fault
code
on the
display
Const. Weath.-
comp.
System char-
acteristics
Cause Measures
FC X X Burner control
unit fault
Modulation
valve control
faulty
Check modulation
valve control
Fd X X Burner
blocked
Fault at the
burner con-
trol unit
Check ignition
electrodes and
connecting
cables. Check
whether a strong
interference
(EMC) field exists
near the equip-
ment. Press
"E RESET" ; re-
place control unit
if the fault is not
removed.
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
Strong inter-
ference
(EMC) field
nearby, or in-
ternal fault
Start the equip-
ment again. Re-
place the control
unit if the equip-
ment will not re-
start.
Fault codes (cont.)
87
Troubleshooting
5862 831 GB
Service