Riello RL Series - 7 led blinks; The burner does not pass to 2 nd stage; Fuel passes to 2 nd stage but air remains in 1 st; Burner stops at transition between 1 st and 2 nd stage or vice versa.

27
20111051
GB
Maintenance
7 led blinks Flame detachment 34 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust, see pag. 15, Fig. 14
35 - Poorly adjusted or dirty firing electrodes. . . . . . . . . . . . . Adjust, see pag. 15, Fig. 10 or clean
36 - Poorly adjusted fan air gate: too much air . . . . . . . . . . . Adjust
37 - 1st nozzle is too big (pulsation) . . . . . . . . . . . . . . . . . . . Reduce 1st nozzle delivery
38 - 1st nozzle is too small (flame detachment) . . . . . . . . . . Increase 1st nozzle delivery
39 - 1st nozzle dirty, or deformed. . . . . . . . . . . . . . . . . . . . . . Replace
40 - Inappropriate pump pressure . . . . . . . . . . . . . . . . . . . . . Adjust to between 10 - 14 bar
41 - 1st stage nozzle unsuited to burner or boiler . . . . . . . . . See Nozzle Table, pag. 13 ; reduce 1st stage
42 - Defective 1st stage nozzle . . . . . . . . . . . . . . . . . . . . . . . Replace
The burner does not
pass to 2nd stage
43 - Control device TR does not close. . . . . . . . . . . . . . . . . . Adjust or replace
44 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
45 - 2nd stage sol. valve coil defective . . . . . . . . . . . . . . . . . Replace
46 - Piston jammed in valve unit . . . . . . . . . . . . . . . . . . . . . . Replace entire unit
Fuel passes to 2nd stage
but air remains in 1st
47 - Low pump pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase
48 - 2nd stage operation of cylinder is faulty . . . . . . . . . . . . . Change cylinder
Burner stops at transi-
tion between 1st and 2nd
stage or vice versa.
Burner repeats starting
cycle
49 - Nozzle dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
50 - Photoresistor dirty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
51 - Excess air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reduce
Uneven fuel supply 52 - Check if cause is in pump or in the fuel supply system Feed the burner from a tank located nearby
Rusty pump internal
parts
53 - Water in tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Suck water from tank bottom with separate pump
Noisy pump, unstable
pressure
54 - Air has entered the suction line. . . . . . . . . . . . . . . . . . . . Tighten connectors
- Depression value too high (higher than 35 cm Hg)
55 - Tank/burner height difference too great . . . . . . . . . . . . . Feed burner with loop circuit
56 - Piping diameter too small . . . . . . . . . . . . . . . . . . . . . . . . Increase
57 - Suction filters clogged. . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
58 - Suction valves closed . . . . . . . . . . . . . . . . . . . . . . . . . . . Open
59 - Paraffin solidified due to low temperature. . . . . . . . . . . . Add additive to light oil
Pump unprimes after
prolonged pause
60 - Return pipe not immersed in fuel . . . . . . . . . . . . . . . . . . Bring to same height as suction pipe
61 - Air enters suction piping . . . . . . . . . . . . . . . . . . . . . . . . . Tighten connectors
Pump leaks light oil 62 - Leakage from sealing organ . . . . . . . . . . . . . . . . . . . . . . Replace pump
Smoke in flame 63 - Not enough air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate, see pag. 15 and pag. 20.
- dark Bacharach 64 - Nozzle worn or dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
65 - Nozzle filter clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean or replace
66 - Erroneous pump pressure . . . . . . . . . . . . . . . . . . . . . . . Adjust to between 10 - 14 bar
67 - Flame stability spiral dirty, loose, or deformed . . . . . . . . Clean, tighten in place, or replace
68 - Boiler room air vents insufficient. . . . . . . . . . . . . . . . . . . Increase
- yellow Bacharach 69 - Too much air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate, see pag. 15 and pag. 20.
Dirty combustion head 70 - Nozzle or filter dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
71 - Unsuitable nozzle delivery or angle . . . . . . . . . . . . . . . . See recommended nozzles, pag. 13
72 - Loose nozzle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten
73 - Impurities on flame stability spiral . . . . . . . . . . . . . . . . . . Clean
74 - Erroneous head adjustment or not enough air . . . . . . . . Adjust, see pag. 20, open gate valve
75 - Blast tube length unsuited to boiler. . . . . . . . . . . . . . . . . Contact boiler manufacturer
10 led blinks The burner goes to lock-
out
76 - Connection or internal fault. . . . . . . . . . . . . . . . . . . . . . .
77 - Presence of electromagnetic disturbance. . . . . . . . . . . . Use the radio disturbance protection kit
SIGNAL FAULT PROBABLE CAUSE SUGGESTED REMEDY