33
INSTALLERUSER
MAINTENANCE TECHNICIAN
Error
Code
Anomaly signalled Cause Boiler status /Solution
0A1 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)
0A2 Parasite ame block
is occurs during the power-on phase in the event of a leak on the
detection circuit or anomaly in the ame control unit.
Press the Reset button (1)
0A3 Overheating block
During normal operation, if a fault causes excessive overheating
internally, the boiler goes into overheating block.
Press the Reset button (1)
0A4 Air/ue pressure switch
During the heat request phase, the board detects the stuck/open
contacts of the air/ue pressure switch.
Press the Reset button (1)
0A5 Fan signal anomaly is occurs if the fan speed is incorrect. Press the Reset button (1)
0A7
Flue temperature
anomaly
If the boiler fails, the ue circuit will provide an excessively high
temperature reading and the boiler will switch o.
Press the Reset button (1)
0A8 Flame circuit anomaly
During the ignition phase an anomaly was detected on the electronic
ame control circuit and the boiler switches o.
Press the Reset button (1)
0A9
Gas valve electric cir-
cuit anomaly
e board detects an anomaly in the gas valve circuit. Before replac-
ing the board, verify the absence of short circuits on gas valve and
related connector.
Press the Reset button (1)
0A15
Flow and return NTC
probe temperature
detection incorrect (in
stand-by)
With the boiler in stand-by, the board detects an anomalous dierence
between the NTC probe ow and return temperatures. e error may
be caused by a failure in one of the two probes
Press the Reset button (1)
0A18
Flow and return NTC
probe temperature
detection incorrect
If the board detects a sudden drop in temperature on one of the two
NTC probes (ow and return), it will report an anomaly. is may
be caused by the failure of one of the two probes
Press the Reset button (1)
0A21 P.C.B. error An error is detected on the P.C.B. and the boiler does not start up Press the Reset button (1)
0A37 Insucient system ow
If the system ow/pressure is too low for a certain period, the boiler
will detect the anomaly.
Check the ow meter, check the pres-
sure switch and check the system.
Press the Reset button (1)
0A80
Flow and return NTC
probe connection error
If the electrical connection between the two NTC probes is switched
around, the board will detect the anomaly (it may be necessary to
wait 3 minutes for the error to be detected).
Press the Reset button (1)
(1) If the block or anomaly persists, contact an authorised company (e.g. Authorized Technical Aer-Sales Service).
Error
Code
Anomaly signalled Cause Boiler status / Solution
0E2 Parasite ame block
is occurs during the power-on phase in the event of a leak on the
detection circuit or anomaly in the ame control unit.
(2) (1)
0E13 Maximum N° of reset Number of allowed resets that have already performed.
Attention: it is possible to reset the
anomaly up to 5 consecutive times
within 15 minutes. (1) By switching the
appliance on and o the 5 attempts are
re-acquired.
0E25 P.C.B. error An error is detected on the P.C.B. and the boiler does not start up (2) (1)
0E30
Flow NTC probe in
short circuit
e board detects a short circuit on the ow NTC probe. (2) (1)
0E31
Flow NTC probe
outside the operating
range
e board detects an open contact on the ow NTC probe. (2) (1)
0E32
DHW NTC probe in
short circuit
e board detects a short circuit on the DHW NTC probe (2) (1)
0E33
DHW NTC probe
outside the operating
range
e board detects an open contact on the DHW NTC probe. (2) (1)
0E34
Low power supply
voltage
is occurs when the power supply voltage is lower than the allowed
limits for the correct boiler operation.
(2) (1)
(1) If the block or anomaly persists, contact an authorised company (for example contact the Authorised Technical Service Centre).
(2) If normal operating conditions are restored, the boiler re-starts without having to be reset.