Troubleshooting; Fault Display - Viessmann Vitodens 100 Series Installation And Service Instructions Manual

Troubleshooting

Fault display

on
on
Displayed System character-
fault code istics
06 Burner locked out
0A Burner locked out
0C Standby
CC Function at the ex-
ternal extension faul-
ty
F02 Burner in a fault
state
66
Faults are indicated by a flashing fault
code (e.g. "F30") and fault symbol Ö or
Ð.
Cause
System pressure
too low
Gas supply pres-
sure too low
Mains voltage too
low
Communication
between control
unit and external
extension interrup-
ted
Temperature limit-
er has responded
Measures
Check the system pres-
sure. If required, top up
heating water (see
page 35).
Check the gas pressure
and gas pressure switch
(if installed)
Wait until the mains volt-
age returns to the normal
range.
Check connecting cable
between control unit and
external extension
Check heating system fill
level. Check circulation
pump. Vent the system.
Press À and ¿ simul-
taneously and hold until
Ð flashes (reset).