Riello DR 32 SE FGR Installation, Use And Maintenance Instructions page 68

GAS OPERATION
Problem
Locks out with flame
The burner continues to
repeat the start-up cycle,
without lockout
Burner goes into lockout
during operation
Lockout when the burner
stops
Firing with pulses
20188797
Faults - Possible causes - Solutions
Possible cause
• The VR solenoid lets too little gas
through.......................................................
• Maximum gas pressure switch intervention.
• Defective control box..................................
• The gas pressure in the network is near the
value pressure switch on which the
minimum ....................................................
• The sudden fall in pressure that follows the
opening of the valve causes the temporary
opening of the pressure switch itself
immediately the valve closes and the burner
stops. The pressure starts to increase
again. The pressure switch closes and
repeats the start up cycle. The sequence
repeats endlessly........................
• Fault on air pressure switch........................
• Maximum gas pressure switch intervention.
• Permanence of the flame in the head of
combustion simulation of flame..................
• Head badly adjusted...................................
• Fan air damper badly adjusted. Too much
air...............................................................
• Firing output too high..................................
Increase it
Adjust or replace
Replace
Reduce the cut in pressure of the minimum gas
pressure switch is adjusted
Replace the gas filter cartridge
Replace
Adjust or replace
Eliminate the continuation of the flame or
replace control box
Adjust it properly
Adjust it
Reduce it
32 GB
Recommended remedy