78
Fault number
on the display
System characteristics
Cause
Measures
F.367
Burner in a fault state
Gas valve electricity sup-
ply does not turn off.
Reset the appliance.
F.368
Burner locked out
Gas pressure switch fault.
Forced ventilation time ex-
pired.
■
Check gas supply (gas pres-
sure).
■
If installed: Check gas pressure
switch for correct function.
If necessary, disconnect the gas
pressure switch connector and
check whether the burner starts.
F.369
Burner in a fault state
Flame is lost immediately
after flame formation (dur-
ing safety time).
Check gas supply (gas pressure
and gas flow switch).
Check balanced flue system for
flue gas recirculation.
Check ionisation electrode for the
following:
■
Distance to burner gauze assem-
bly (see page 43)
■
Contamination on electrode
Reset the appliance.
F.370
Burner in a fault state
Fuel valve or modulation
valve will not close.
Check the gas train, replace if nec-
essary.
Reset the appliance.
F.371
Burner in a fault state
Fan speed too low
Check the fan.
Check the fan connecting cables.
Check the fan power supply.
Reset the appliance.
Troubleshooting
Fault messages
(cont.)
6130884
Service
