Ferroli SUN G50 Operating, Installation And Maintenance Instructions page 36

Fault Diagnosis
After shutdown, the red light stays on.
In this condition, after pressing the unit's release button for at least 3 seconds, visual fault diagnosis is
activated (see fault tables).
On pressing the release button again for at least 3 seconds, interface fault diagnosis is activated .
Shutdown
status
Red light blinking
2 blinks
3 blinks
4 blinks
5 blinks
6 blinks
7 blinks
8 blinks
9 blinks
10 blinks
During the check on the causes of the shutdown, the unit's outputs are turned off.
The burner stays off.
Press the release button for approximately 1 second to reset the unit and restart the burner.
36
Shutdown
status
Visual fault diagnosis
Blinking
Fault codes
Fault table
“AL”
to the
terminal 10
On No flame at the end of the safety time
1 fault with the fuel valves
2 fault with the photo-cell
3 no oil, wrong burner setting
On Free
On Foreign light during pre-ventilation
On Free
On Free
On No flame during operation
1 fault with the fuel valves
2 fault with the photo-cell
3 no oil, wrong burner setting
On Free
On Free
Off Faults with the wiring or inside the unit
Cod. 35445644 - 08/2007 (Rev. 00)
SUN G50 - G70
Shutdown
status
Possible cause
Opening
GB