32
INSTALLER
USER
MAINTENANCE TECHNICIAN
TECHNICAL DATA
2.5 FAULT AND ANOMALY SIGNALS.
In case of an anomaly, the letter "E" appears on the display alter-
nately with the relevant error code occurred. e error codes are
listed in the following table:
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-tempe-
rature)
During normal operation, if a fault causes excessive
overheating internally, the boiler goes into overhea-
ting block.
Press the Reset button (1).
03
Flue safety thermo-
stat anomaly
Failure to recognise the ue pressure switch.
e boiler will automatically restart aer 30 minutes
without having to be reset. Aer three interventions
in less than two hours, the boiler has to be manually
rearmed. Restore the normal conditions and press the
button Reset (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.
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, aer 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 o 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.
11
Flue pressure switch
anomaly
is occurs in case of a fault in the ue pressure
switch or the fan.
If normal conditions are restored the boiler restarts
without having to be reset (1).
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 boiler restarts
without having to be reset (1).
27
Insucient circula-
tion
is occurs if there is overheating in the boiler due to
insucient water circulating in the primary circuit;
the causes can be:
- low system circulation; check that no shut-o devices
are closed on the heating circuit and that the system
is free of air (deaerated);
- circulating pump blocked; free the circulating pump.
If normal conditions are restored the boiler restarts
without having to be reset (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 con-
trol communication.
is occurs if an incompatible remote control is con-
nected, 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 detected 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 communi-
cation loss
Communication loss on the IMG BUS
protocol
e boiler does not satisfy the room heating requests
(1).
(1) If the shutdown or fault persists, contact an authorised company (e.g. Technical Aer-Sales Service).
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