15
SIGNAL FAULT PROBABLE CAUSE SUGGESTED REMEDY
No blink The burner does not
start
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 (RL 28 - RL 38 single-phase) . . . . . . . . . . . Replace
2 x blinks After pre-purge and the
safety time, the burner
goes to lock-out at the
end of the safety time
9 - No fuel in tank; water on tank bottom . . . . . . . . . . . . . . . . . . . . Top up fuel level or suck up water
10 - Inappropriate head and air damper adjustments. . . . . . . . . . . . Adjust, see page 6 and 11
11 - Light oil solenoid valves fail to open (1st stage or safety). . . . . Check connections; replace coil
12 - 1st nozzle clogged, dirty, or deformed. . . . . . . . . . . . . . . . . . . . Replace
13 - Dirty or poorly adjusted firing electrodes. . . . . . . . . . . . . . . . . . Adjust or clean
14 - Grounded electrode due to broken insulation . . . . . . . . . . . . . . Replace
15 - High voltage cable defective or grounded. . . . . . . . . . . . . . . . . Replace
16 - High voltage cable deformed by high temperature . . . . . . . . . . Replace and protect
17 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
18 - Erroneous valves or transformer electrical connections . . . . . . Check
19 - Control box defective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
20 - Pump unprimed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prime pump and see “Pump unprimes”
21 - Pump/motor coupling broken . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
22 - Pump suction line connected to return line . . . . . . . . . . . . . . . . Correct connection
23 - Valves up-line from pump closed . . . . . . . . . . . . . . . . . . . . . . . Open
24 - Filters dirty: line - pump - nozzle . . . . . . . . . . . . . . . . . . . . . . . . Clean
25 - Defective photocell or control box. . . . . . . . . . . . . . . . . . . . . . . Replace photocell or control box
26 - Dirty photocell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
27 - 1st stage operation of cylinder is faulty . . . . . . . . . . . . . . . . . . . Change the cylinder
28 - Motor protection tripped (RL 38 three-phase - RL 50) . . . . . . . Reset thermal cut-out
29 - Defective motor command control device (RL 38 three-phase - RL 50) Replace
30 - Missing phase (RL 38 three-phase - RL 50) . . . . . . . . . . . . . . . Reset thermal cut-out
thermal cut-out trips when third phase is re-connected
31 - Incorrect motor rotation direction . . . . . . . . . . . . . . . . . . . . . . . Change motor electrical connections
4 x blinks The burner starts and
then goes into lock-out
32 - Photocell short-circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace photocell
33 - Light is entering or flame is simulated. . . . . . . . . . . . . . . . . . . . Eliminate light or replace control box
7 x blinks Flame detachment 34 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust, see page 6, fig. (F)
35 - Poorly adjusted or dirty firing electrodes . . . . . . . . . . . . . . . . . . Adjust, see page 6, fig. (B)
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 and 14 bar
41 - 1st stage nozzle unsuited to burner or boiler . . . . . . . . . . . . . . See Nozzle Table, page 5; 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. Burner
repeats starting cycle.
49 - Nozzle dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Renew nozzle
50 - Photocell dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
51 - Excess air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reduce
Uneven fuel supply 52 - Check if cause is in pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Feed burner from tank
or fuel supply system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . located near burner
Internally rusted pump 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
- dark Bacharach
- yellow Bacharach
63 - Not enough air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate, see page 6 and 11
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 spirat 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 page 6 and 11
Dirty combustion head 70 - Nozzle or filter dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
71 - Unsuitable nozzle delivery or angle. . . . . . . . . . . . . . . . . . . . . . See recommended nozzles, page 5
72 - Loose nozzle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten
73 - Impurities on flame stability spiral . . . . . . . . . . . . . . . . . . . . . . . Clean
74 - Erroneous head adjustment or not enough air . . . . . . . . . . . . . Adjust, see page 11; open gate valve
75 - Blast tube length unsuited to boiler . . . . . . . . . . . . . . . . . . . . . . Contact boiler manufacturer
10 x blinks The burner goes to lock-
out
76 - Connection or internal fault
77 - Presence of electromagnetic disturbance . . . . . . . . . . . . . . . . . Use the radio disturbance protection kit
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