Riello RL Series Installation, Use And Maintenance Instructions page 57

SIGNAL FAULT
7 led blinks Flame detachment
The burner does not
pass to 2nd stage
Fuel passes to 2nd stage
but air remains in 1st
Burner stops at transi-
tion between 1st and 2nd
stage or vice versa.
Burner repeats starting
cycle
Uneven fuel supply
Rusty pump internal
parts
Noisy pump, unstable
pressure
Pump unprimes after
prolonged pause
Pump leaks light oil
Smoke in flame
- dark Bacharach
- yellow Bacharach
Dirty combustion head
10 led blinks The burner goes to lock-
out
Maintenance
PROBABLE CAUSE
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
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
47 - Low pump pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase
48 - 2nd stage operation of cylinder is faulty . . . . . . . . . . . . . Change cylinder
49 - Nozzle dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
50 - Photoresistor dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
51 - Excess air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reduce
52 - Check if cause is in pump or in the fuel supply system
53 - Water in tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Suck water from tank bottom with separate pump
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
60 - Return pipe not immersed in fuel . . . . . . . . . . . . . . . . . . Bring to same height as suction pipe
61 - Air enters suction piping . . . . . . . . . . . . . . . . . . . . . . . . . Tighten connectors
62 - Leakage from sealing organ . . . . . . . . . . . . . . . . . . . . . . Replace pump
63 - Not enough air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate, see pag. 15 and pag. 20.
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
69 - Too much air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate, see pag. 15 and pag. 20.
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
76 - Connection or internal fault . . . . . . . . . . . . . . . . . . . . . . .
77 - Presence of electromagnetic disturbance. . . . . . . . . . . . Use the radio disturbance protection kit
27 GB
SUGGESTED REMEDY
Feed the burner from a tank located nearby
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