Riello RL 22 BLU Manuel D'entretien page 37

FAULT
The burner does not start
The burner starts
and then goes into lock-out
After pre-purge and the safety time,
the burner goes to lock-out
and the flame does not appear
The flame ignites normally
but the burner locks out when
the safety time has elapsed
Firing with pulsations
or flame detachment,
delayed firing
The burner does not pass to 2nd stage
Burner stops at transition
between 1st and 2nd stage.
Burner repeats starting cycle
Uneven fuel supply
Internally rusted pump
Noisy pump, unstable pressure
Pump unprimes after prolonged pause
Pump leaks light oil
Smoke in flame - dark Bacharach
- yellow Bacharach
Dirty combustion head
PROBABLE CAUSE
1 - No electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Close all switches - Check fuses
2 - A limit or safety control device is open . . . . . . . . . . . . . . . . . . . .Adjust or replace
3 - Control box lock-out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset control box (no sooner than 10 s after the lock-
out)
4 - Pump is jammed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
5 - Erroneous electrical connections . . . . . . . . . . . . . . . . . . . . . . . .Check connections
6 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
7 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
8 - Defective capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
9 - Servomotor faulty or wrongly adjusted . . . . . . . . . . . . . . . . . . . .Adjust or replace
10 - Defective UV sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
11 - Light is entering or flame is simulated. . . . . . . . . . . . . . . . . . . . .Eliminate light or replace control box
12 - No fuel in tank; water on tank bottom . . . . . . . . . . . . . . . . . . . . .Top up fuel level or suck up water
13 - Inappropriate head and gate valve in 1st stage adjustments . . .Adjust, see page 15 and 27
14 - VH/L solenoid valves fail to open (1st stage) . . . . . . . . . . . . . . .Check connections; replace coil
15 - Nozzle clogged, dirty, or deformed . . . . . . . . . . . . . . . . . . . . . . .Replace
16 - Dirty or poorly adjusted firing electrodes. . . . . . . . . . . . . . . . . . .Adjust or clean
17 - Grounded electrode due to broken insulation . . . . . . . . . . . . . . .Replace
18 - High voltage cable defective or grounded. . . . . . . . . . . . . . . . . .Replace
19 - High voltage cable deformed by high temperature . . . . . . . . . . .Replace and protect
20 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
21 - Erroneous valves or transformer electrical connections . . . . . . .Check
22 - Control box defective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
23 - Pump unprimed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prime pump (see points 54-55)
24 - Pump/motor coupling broken . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
25 - Pump suction line connected to return line . . . . . . . . . . . . . . . . .Correct connection
26 - Valves up-line from pump closed . . . . . . . . . . . . . . . . . . . . . . . .Open
27 - Filters dirty: line - pump - nozzle . . . . . . . . . . . . . . . . . . . . . . . . .Clean
28 - Defective UV sensor or control box . . . . . . . . . . . . . . . . . . . . . .Replace UV sensor or control box
29 - Dirty UV sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Clean
30 - Servomotor faulty or wrongly adjusted . . . . . . . . . . . . . . . . . . . .Adjust or replace
31 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Adjust, see page 14, fig. (E)
32 - Poorly adjusted or dirty firing electrodes. . . . . . . . . . . . . . . . . . .Adjust, see page 14, fig. (B)
33 - Poorly adjusted fan air gate in 1st stage: too much air . . . . . . . .Adjust, see page 27
34 - Nozzle unsuited to burner or boiler . . . . . . . . . . . . . . . . . . . . . . .See nozzle Table, page 12; reduce 1st stage
35 - Defective nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
36 - Inappropriate pump pressure . . . . . . . . . . . . . . . . . . . . . . . . . . .Adjust to between 10 and 14 bar
37 - Control device TR does not close . . . . . . . . . . . . . . . . . . . . . . . .Adjust or replace
38 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
39 - VH/L solenoid valve coil defective . . . . . . . . . . . . . . . . . . . . . . .Replace
40 - Low pump pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Increase
41 - Servomotor faulty or wrongly adjusted . . . . . . . . . . . . . . . . . . . .Adjust or replace
42 - Nozzle dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Renew nozzle
43 - UV sensor dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Clean
44 - Excess air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reduce
45 - Check if cause is in pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Feed burner from tank
or fuel supply system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Located near burner
46 - Water in tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Suck water from tank bottom with separate pump
47 - Air has entered the suction line . . . . . . . . . . . . . . . . . . . . . . . . .Tighten connectors
- Depression value too high (higher than 35 cm Hg):
48 - Tank/burner height difference too great . . . . . . . . . . . . . . . . . . .Feed burner with loop circuit
49 - Piping diameter too small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Increase
50 - Suction filters clogged. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Clean
51 - Suction valves closed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Open
52 - Paraffin solidified due to low temperature. . . . . . . . . . . . . . . . . .Add additive to light oil
53 - Return pipe not immersed in fuel . . . . . . . . . . . . . . . . . . . . . . . .Bring to same height as suction pipe
54 - Air enters suction piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tighten connectors
55 - Leakage from sealing organ . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace pump
56 - Not enough air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Adjust head and fan gate, see page 15 and 27
57 - Nozzle worn or dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
58 - Nozzle filter clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Clean or replace
59 - Erroneous pump pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Adjust to between 10 - 14 bar
60 - Flameholder dirty, loose, or deformed . . . . . . . . . . . . . . . . . . . .Clean, tighten in place, or replace
61 - Boiler room air vents insufficient . . . . . . . . . . . . . . . . . . . . . . . . .Increase
62 - Too much air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Adjust head and fan gate, see page 15 and 27
63 - Nozzle or filter dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Replace
64 - Unsuitable nozzle delivery or angle . . . . . . . . . . . . . . . . . . . . . .See recommended nozzles, page 12
65 - Loose nozzle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tighten
66 - Impurities on Flameholder . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Clean
67 - Erroneous head adjustment or not enough air . . . . . . . . . . . . . .Adjust, see page 15 and 27
37
SUGGESTED REMEDY