13
EN
4.13
Faults and reporting
If there is a fault, an error code “Axx” is shown on the display.
In certain cases, the error code is accompanied by an icon:
FAULTS
ICONS DISPLAYED
flame failure A10
all faults except flame failure and water
pressure
water pressure
Reset function
To reset boiler operation in the event of a fault, press:
> 2 sec
10
A
Res
If the correct operating conditions have been restored, the boiler will start
up again automatically.
In the presence of a remote control, a maximum of 5 consecutive
unlocking attempts are available.
In this case, by pressing the boiler restores the initial attempts.
b
If the attempts to reset the boiler do not work, contact the Techni-
cal Assistance Centre.
Fault A41
If the pressure value falls below the 0.3 bar safety value, the boiler shows
the fault code A41 for a transitory time of 10 min. If the fault still persists
after this time, fault code A40 will appear.
4
A
1
4
A
0
With fault A40 on the boiler it is necessary to:
-
open
the filling tap
(
A
) turning it counterclockwise
-
access the Info menu (“5.3 INFO menu
”, item I018) to check that
the pressure value reaches 1-1.5 bar
In addition to the above, the analogue hydrometer kit (available as
an accessory), allows you to read the pressure value present in the
system even in the event of a power failure (e.g. construction site).
-
close
the filling tap
(
A
) making sure you hear the mechanical click.
A
Press
to restore operation. After filling, run a venting cycle. If the
pressure drop is very frequent, contact the Technical Assistance Centre.
In the presence of alarms A40 or A41, from revision 9 of the board software
available in the INFO menu (“5.3 INFO menu
”, item I035), the
display of the anomaly code (5sec) alternates with that of the system water
pressure value (2sec).
Fault A60
Provide any stability of the domestic hot water temperature that, in any
event, is supplied at a temperature of around 50°C. The intervention of
the Technical Assistance Centre is required.
Fault
A91
The boiler has a self-diagnosis system that signals the need to clean the
primary heat exchanger on the basis of the total number of hours in cer-
tain operating conditions (alarm code A91). Fault A91 occurs when the
counter exceeds the value of 2500 hours; this value can be checked in
the “5.3 INFO menu
”, item I015 (visualization/100, example 2500h
= 25).
After cleaning (using the special kit supplied as an accessory), reset the
total hours counter by bringing parameter 312 = 1.
NOTE: The meter resetting procedure should be carried out after each
in-depth cleaning of the primary exchanger or if this latter is re-
placed.
4.14
Replacing the board
If the check and adjustment board is replaced, it may be necessary to
reprogram the configuration parameters. In this case, refer to the pa-
rameters table to see the board default values, the factory set values,
and the personalised values. The parameters that must be checked and
reset if necessary after replacing the board are: 301 - 302 (SERVICE) - 306
- 307 - 308 - 309 - 310 - 708.
b
708 (remember to set the parameter to 0).
ERROR CODE
ERROR MESSAGE
DESCRIPTION OF TYPE OF ALARM
A10
Flame lockout
Condensate drain obstructed
Flue gas exhaust/air suction obstructed
defi nitive
A11
Extraneous fl ame
transitional
A20
Limit thermostat
defi nitive
A30
Fan fault
defi nitive
A40
Fill the system
defi nitive
A41
Fill the system
transitional
A42
Pressure transducer fault
defi nitive
A60
DHW probe fault
transitional
A70
Flow sensor fault
Flow sensor overtemperature
Flow/return sensor diff erential
transitional
defi nitive
defi nitive
A80
Return probe fault
Return probe overtemperature
Return-fl ow sensor diff erential
transitional
defi nitive
defi nitive
A90
Flue gas probe fault
transitional
A91
Clean primary heat exchanger
transitional
A58
Low power supply voltage
transitional
A59
High power supply voltage
transitional
CFS
Call Service
signal
SFS
Stop for Service
defi nitive
FIL
Low pressure - check system
signal
>3.0 bar
High pressure - check system
signal
