Evolution FDX
30
23 ALARM CODES
The boiler Evolution EV FDX is equipped by an electronic circuit able to sense, by means of a
continuing autotest, the operation lockouts and alarms of the boiler. When the electronic control
senses an operation error, indicates it showing an alarm code in the screen of the display. In the
following list the possible alarm codes are described:
CODE ALARM DESCRIPTION
AL AP
bar ºC
Pressure.
The pressure of the boiler is lower than 0,5 bar.
The boiler stops working. To restart working it is
necessary to fill the boiler betwen1 and 1.5 bar.
This alarm happens when the installation is
empting or when it is a leakage.
If this alarm is repetitive, put in contact with the
nearest technical service support.
AL AT
bar ºC
Temperature.
The boiler rise to the security temperature of 110
ºC. The boiler stops working. To restart working,
push the scurity thermostat's button, once the
temperature has decreased.
If this alarm is repetitive, put in contact with the
nearest technical service support.
AL A
bar ºC
Burner.
Burner is lockout. To restart working, push the
button located at the burner (4).
This alarm happens when there is any operation
error in the burner or in the oil installation.
If this alarm is repetitive, put in contact with the
nearest technical service support.
AL S1
bar ºC
Boiler sensor.
The boiler temperature sensor (8) is broken or
disconnected. To change it, put in contact with the
nearest technical service support.
AL S2
bar ºC
DHW sensor
DHW temperature sensor (3) is broken or
disconnected. To change it, put in contact with the
nearest technical service support.
AL S4
bar ºC
Pressure sensor
The pressure sensor (9) is broken or disconnected.
To change it, put in contact with the nearest
technical service support
NOTES: It will be helpfull communicating the alarm code to the technical service officer, when
their service is required.