37
37
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
2.5 FAULT AND ANOMALY SIGNALS.
Th
e boiler signals any anomalies using a code shown on the boiler
display (14) according to the following table:
Error
Code
Anomaly signalled
Cause
Boiler status / Solution
01
No ignition
ignition
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 after extended
downtime, it may be necessary to eliminate the block.
Press the Reset button (1)
02
Safety thermostat func-
tion block
(
NTC
fl
ow/
return overheating
)
During normal operation, if a fault causes excessive overheating
internally, the boiler goes into overheating block.
Press the Reset button (1)
03
Flue safety thermostat
block
During normal operation, if a fault causes excessive
fl
ue gas
overheating, the boiler blocks
Press the Reset button (1)
04
Contacts resistance
block
Th
e P.C.B. detects a fault on the gas valve supply. Check its con-
nection. (the anomaly is detected and displayed only in the event
of a request).
Press the Reset button (1)
05
Storage tank probe
fl
ow
Th
e board detects an anomaly on the
fl
ow NTC probe.
Th
e boiler does not start (1)
08
Maximum N
°
of resets
Number of allowed resets already performed.
Th
e anomaly can be reset 5 times consecu-
tively, 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
again, the 5 attempts are re-acquired.
10
Insu
ffi
cient system
pressure
Water pressure inside the central heating circuit that is su
ffi
cient
to guarantee the correct operation of the boiler is not detected.
Check on the boiler pressure gauge that the
system pressure is between 1
÷
1.2 bar and
restore the correct pressure if necessary.
15
Configuration error
If the board detects an anomaly or incongruity on the
electric wiring, the boiler will not start.
If normal conditions are restored the
boiler restarts without having to be re-
set. Check that the boiler is configured
correctly (1)
16
Fan anomaly
Th
is occurs if the fan has a mechanical or electrical fault.
Press the Reset button (1)
20
Parasite
fl
ame block
Th
is occurs in the event of a leak on the detection circuit or
anomaly in the
fl
ame control unit.
Press the Reset button (1)
24
Push button control
panel anomaly
Th
e board detects an anomaly on the pushbutton panel.
If normal conditions are restored the
boiler restarts without having to be reset
(1).
29
Flue probe anomaly
Th
e board detects an anomaly on the
fl
ue probe
Th
e boiler does not start (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 still not
detected on re-starting, the boiler will
switch to local operating mode, i.e. using
the controls on the control panel. In this
case the "Central Heating" (1) function
cannot be activated.
36
IMG Bus
communication loss
Communication between the various components is interrupted
due to an anomaly on the boiler control unit, on the zone control
unit (optional) or on the IMG Bus.
Th
e boiler does not satisfy the room heat-
ing 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)
38
Loss of
fl
ame signal
This occurs when the boiler is ignited correctly and the burner
flame switches off unexpectedly; a new attempt at ignition is
performed and if normal conditions are restored, the boiler
does not have to be reset.
If normal conditions are restored the boiler
restarts without having to be reset (1) (2)
43
Block due to loss of
fl
ame signal
Th
is occurs if the ''Flame signal loss'' error occurs many times
in a row within a preset period (38).
Press the Reset button, before restart-
ing, the boiler will run a post-ventilation
cycle. (1)
(
1
)
If the shutdown or fault persists, contact an authorised company
(
e.g. Authorised Technical After-Sales Service
)
(
2
)
The anomaly can only be verified in the list of errors in the “Information” menu
