alarm appears on the display and the blue
luminous bar becomes red.
Descriptions of the anomalies with relative
alarms and solutions are given below:
– LOW WATER PRESSURE
ANOMALY ALARM 02 (fig. 23/a)
If the pressure detected by the transdu-
cer is lower than 0.5 bar, the boiler
stops and the display shows the alarm
"ALL 02".
Bring the pressure back to normal by
means of the load faucet until the pres-
sure indicated by the transducer is
between 1 and 1.5 bars.
ON COMPLETION OF THE OPERATION,
MAKE SURE THE LOAD FAUCET IS CLO-
SED.
If the load procedure has to be repeated
several times, it is advisable to check
that the seal of the heating circuit is
intact (check that there are no leaks).
– HIGH WATER PRESSURE
ANOMALY ALARM 03 (fig. 23/b)
If the pressure detected by the transdu-
cer is more than 2.8 bar, the boiler
stops and the display shows anomaly
"ALL 03"
– HEATING SENSOR ANOMALY
ALARM 05 (fig. 23/d)
If the heating sensor (SM) is open or
short circuited, the boiler will not func-
tion and the display will show the alarm
"ALL 05".
– FLAME BLOCK ALARM 06 (fig. 23/e)
If the flame control has not detected the
presence of the flame after a complete
ignition sequence, or for any other rea-
son the card cannot "see" the flame, the
boiler will stop and the display will show
the alarm "ALL 06".
Press the key
of the controls (2) to
start up the boiler again.
– SAFETY THERMOSTAT
ANOMALY ALARM 07 (fig. 23/f)
If the connection with the safety thermo-
stat is interrupted, the boiler will stop;
the flame control will remain waiting to
be switched off for one minute, keeping
the system pump on for that period.
If, the thermostat connection is restored
within the minute, the boiler will start up
working normally again, otherwise it will
stop and the display will show the alarm
"ALL 07".
Press the key
of the controls (2) to
start up the boiler again.
– PARASITE FLAME ANOMALY
ALARM 08 (fig. 23/g)
If the flame control section recognises
the presence of flames also in phases
when they should not be present, it
means there is a breakdown in the flame
detection circuit; the boiler will stop and
Fig. 23/b
2
2
ES
PT
ENG
Fig. 23/a
Fig. 23/d
Fig. 23/e
Fig. 23/f
93