13
INSTALLERUSER
MAINTENANCE TECHNICIAN
Boiler ignition (see Figure). Before ignition
make sure the heating system is lled with water
and that the manometer (7) indicates a pressure
of 1 ÷ 1.2 bar.
- Open the gas cock upstream from the boiler.
- Press key (2) and set the boiler on Summer ( )
or Winter ( ).
When in summer position ( ) the domestic
hot water temperature is adjusted with the
buttons (3-4).
When the winter position is selected ( ) the
system water temperature is adjusted with the
buttons (5-6), whilst the domestic hot water
temperature is adjusted using the buttons (3-4),
by pressing (+) to increase and (-) to reduce the
temperature.
From this moment the boiler functions automat-
ically. With no demand for heat (central heating
or domestic hot water production) the boiler goes
to “standby” function, equivalent to the boiler
being powered without presence of ame. Each
time the boiler ignites, the relative ame present
symbol is displayed (15).
2.5 FAULT AND ANOMALY SIGNALS.
e boiler signals out anomalies by ashing on
the display and relative error codes, listed on the
table, are displayed.
Error
Code
Anomaly signalled Cause Boiler status / Solution
01 No ignition block
In the event of request of room central heating or domestic hot
water production, the boiler does not switch on within the preset
time. Upon appliance commissioning or aer extended downtime,
it may be necessary to eliminate the block.
Press the Reset button (1)
02
Safety thermostat
block (over-temper-
ature)
During normal operation, if a fault causes excessive overheating
internally, the boiler goes into overheating block.
Aer an appropriate cooling press the
Reset button (1)
03
Flue safety thermostat
block
During normal operation, if a fault causes excessive ue gas overheat-
ing, the boiler blocks
e boiler will automatically restart aer
30 minutes if normal conditions resume
without having to be reset. Aer three
trippings of the ue safety thermostat in
less than two hours the boiler requires
a manual reset to restart and wait for
further 30 minutes. Press the Reset button
(1)
05 Flow probe anomaly e board detects an anomaly on the ow NTC probe. e boiler does not start (1)
06
Domestic hot water
probe anomaly
e board detects an anomaly on the domestic hot water NTC probe.
In this case the antifreeze function is also inhibited
e boiler does not produce domestic hot
water (1)
08 Maximum N° of resets Number of allowed resets already performed.
Attention: the anomaly can be reset
5 times consecutively, after which the
function in inhibited for at least one hour.
One attempt is gained every hour for a
maximum of 5 attempts. By switching the
appliance on and off the 5 attempts are
re-acquired.
10
Insucient system
pressure
Water pressure inside the central heating circuit that is sucient to
guarantee the correct operation of the boiler is not detected.
Check on the boiler pressure gauge (1) that
the system pressure is between 1÷1.2 bar
and restore the correct pressure if necessary.
20 Parasite ame block
is occurs in the event of a leak on the detection circuit or anomaly
in the ame control unit.
Press the Reset button (1)
24
Push button control
panel anomaly
e board detects an anomaly on the pushbutton panel.
If normal conditions are restored the boil-
er restarts without having to be reset (1).
27
Insucient water
circulation.
is occurs if there is overheating in the boiler due to insucient water
circulating in the primary circuit; the causes can be:
- low circulation;
- circulator pump blocked.
- check that no shuto devices are closed on
the heating circuit and that the system is
free of air (deaerated);
- free the circulating pump.
(1)
28
Domestic hot water
leakage
If during the heating phase, a rise in domestic hot water temperature
occurs, an anomaly is signalled and heating temperature is reduced
to limit the formation of limescale in the heat exchanger.
Check that all domestic hot water system
cocks are closed and are not drawing and
check also that there are no leaks in the
system. Once good conditions are restored
in the domestic hot water system, the boiler
returns to normal functioning (1)
31
Loss of remote control
communication.
This occurs if an incompatible remote control is connected, or if
communication between the boiler and the remote control is lost.
Disconnect and reconnect the power to the
boiler. If the Remote Control is not detect-
ed on re-starting the boiler will switch to
“Summer” local operating mode. In this
case, the controls on the control panel of
the boiler are enabled again (1).
36
IMG BUS communica-
tion loss
Communication loss on the IMG BUS protocol
e boiler does not satisfy the room heating
requests (1).
37
Low power supply
voltage
This occurs when the power supply voltage is lower than the allowed
limits for the correct boiler operation.
If normal conditions are restored the boiler
restarts without having to be reset (1).
(1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Technical Aer-Sales Service).
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