Riello RS5 Installation, Use And Maintenance Instructions page 30

The sequence of led pulses issued by the control box identifies
the possible types of malfunction, which are listed in the table
Tab. S.
Signal Possible cause
No stable flame signal is detected within the safety time:
2 blinks
–

–
–
–
–
Minimum air pressure switch fails to close:
3 blinks
–

–
–
–
–
Light present in chamber prior to ignition.
4 blinks

Minimum air pressure switch does not switch:
5 blinks
–

–
Loss of flame during operation:
7 blinks
 –
 –
–
–
10 blinks
 
 
20198379
Faults - Possible causes - Solutions
faulty ionisation probe;
faulty gas valve;
phase/neutral connections inverted;
faulty ignition transformer;
burner not adjusted (insufficient gas).
check the intervention of the VPS lockout;
faulty air pressure switch;
air pressure switch not adjusted;
the fan motor is not working;
intervention of maximum air pressure switch.
faulty air pressure switch, locked in working position;
air pressure switch not adjusted.
burner not adjusted (insufficient gas);
faulty gas valve;
short-circuit between the ionisation probe and the earth.
Connection error or internal fault to control box.
28 GB
Tab. S