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re on the hydrometer is between 1 and
1.2 bar.
ONCE THE OPERATION HAS BEEN COM-
PLETED, CLOSE THE COCK CORRECTLY
If the load procedure has to be repea-
ted several times, it is advisable to
check that the seal of the heating cir-
cuit is intact (check that there are no
leaks).
– HIGH WATER PRESSURE ANOMALY
ALARM 03 (fig. 15/2)
If the pressure detected by the transdu-
cer is more than 2.8 bar, the boiler
stops and the display shows anomaly
ALL 03.
– C.H. SENSOR ANOMALY ALARM 05
(fig. 15/4)
If the C.H. sensor (SM) is open or short
circuited, the boiler will not function and
the display will show the alarm ALL 05.
– FLAME BLOCK ALARM 06 (fig. 15/5)
In case of anomalies during activation or
operation, the thermal unit will lockout
and ALL 06 will appear on the display.
Press the diesel fuel burner RESET but-
ton to restore start-up conditions. This
operation can be repeated maximum 2-
3 times.
– SAFETY THERMOSTAT ANOMALY (fig.
15/6)
The safety stat is of the manually reset-
ting type and opens, causing the main
burner to turn off immediately, whene-
ver the temperature of 110°C is excee-
ded in the boiler. To restore boiler opera-
tion, unscrew the black cap and reset
the button.
– WATER CIRCUL ATION ANOMALY
ALARM 09 (fig. 15/8)
There is no water circulation in the pri-
mary circuit. If the anomaly occurs upon
first request, the boiler performs a maxi-
mum of three attempts to assure the
presence of water inside the primary cir-
cuit; it then stops showing on the display
the ALL 09 anomaly. If the anomaly
occurs during normal functioning, the
display immediately shows the ALL 09
anomaly, keeping the plant pump and the
eventual boiler pump, switched on for 1
minute. In this case there was a sudden
increase of the boiler inner temperature.
Check to see if there is water circulation
inside the boiler and check if the pump is
operating properly.
To exit the anomaly press the
ton of the controls (2). If the anomaly
persists, request assistance from quali-
fied technical personnel.
– AUXILIARY
SENSOR
ALARM 10 (fig. 15/9)
BOILER WITH ACCUMULATION: anomaly
of the D.H.W. sensor (ST). When the
D.H.W. sensor is open or short circuited,
the display will show anomaly ALL 10.
but-
ANOMALY
RESET BUTTON
RESET
TWICE
ONLY
2
Fig. 15/2
Fig. 15/4
Fig. 15/5
Fig. 15/6
Fig. 15/8
Fig. 15/9
93
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