Riello DB 3 SE FGR Installation, Use And Maintenance Instructions page 60

Problem
Burner goes into lockout during operation
Lockout when the burner stops
Firing with pulses
20162773
Faults - Possible causes - Solutions
Possible cause
Fault on air pressure switch
Maximum gas pressure switch intervention Adjust or replace
Permanence of the flame in the head of
combustion simulation of flame
Head badly adjusted
Fan air damper badly adjusted
Firing output too high
29 GB
Recommended remedy
Replace
Eliminate the continuation of the flame or
replace control box
Adjust it properly
Adjust it
Reduce it
Tab. M