Fault - Probable Cause - Suggested Remedy - Riello RL 28/1 Installation, Use And Maintenance Manual

SIGNAL FAULT
No blink The burner does not
start
4 x blinks The burner starts and
then goes into lock-out
2 x blinks After pre-purge and the
safety time, the burner
goes to lock-out at the
end of the safety time
7 x blinks Flame detachment
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
10 x blinks
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 - Photocell short-circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace photocell
10 - Light is entering or flame is simulated . . . . . . . . . . . . . . . . . . . . Eliminate light or replace control box
11 - No fuel in tank; water on tank bottom . . . . . . . . . . . . . . . . . . . . Top up fuel level or suck up water
12 - Inappropriate head and air damper adjustments . . . . . . . . . . . Adjust, see page 21 and 27
13 - Light oil solenoid valves fail to open (1st nozzle) . . . . . . . . . . . Check connections; replace coil
14 - 1st nozzle clogged, dirty, or deformed . . . . . . . . . . . . . . . . . . . Replace
15 - Dirty or poorly adjusted firing electrodes . . . . . . . . . . . . . . . . . . Adjust or clean
16 - Grounded electrode due to broken insulation . . . . . . . . . . . . . . Replace
17 - High voltage cable defective or grounded . . . . . . . . . . . . . . . . . Replace
18 - High voltage cable deformed by high temperature . . . . . . . . . . Replace and protect
19 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
20 - Erroneous valves or transformer electrical connections . . . . . . Check
21 - Control box defective . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
22 - Pump unprimed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prime pump and see ≈Pump unprimes∆
23 - Pump/motor coupling broken . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
24 - Pump suction line connected to return line . . . . . . . . . . . . . . . . Correct connection
25 - Valves up-line from pump closed . . . . . . . . . . . . . . . . . . . . . . . Open
26 - Filters dirty: line - pump - nozzle . . . . . . . . . . . . . . . . . . . . . . . . Clean
27 - Defective photocell or control box . . . . . . . . . . . . . . . . . . . . . . . Replace photocell or control box
28 - Dirty photocell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
29 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust, see page 6, fig. (F)
30 - Poorly adjusted or dirty firing electrodes . . . . . . . . . . . . . . . . . . Adjust, see page 6, fig. (B)
31 - Poorly adjusted fan air gate: too much air . . . . . . . . . . . . . . . . Adjust
32 - 1st nozzle is too big (pulsation) . . . . . . . . . . . . . . . . . . . . . . . . . Reduce 1st nozzle delivery
33 - 1st nozzle is too small (flame detachment) . . . . . . . . . . . . . . . . Increase 1st nozzle delivery
34 - 1st nozzle dirty, or deformed . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
35 - Inappropriate pump pressure . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
36 - Check if cause is in pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Feed burner from tank
or fuel supply system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . located near burner
37 - Water in tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Suck water from tank bottom with separate
pump
38 - Air has entered the suction line . . . . . . . . . . . . . . . . . . . . . . . . Tighten connectors
- Depression value too high (higher than 35 cm Hg):
39 - Tank/burner height difference too great . . . . . . . . . . . . . . . . . . Feed burner with loop circuit
40 - Piping diameter too small . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase
41 - Suction filters clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
42 - Suction valves closed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Open
43 - Paraffin solidified due to low temperature . . . . . . . . . . . . . . . . . Add additive to light oil
44 - Return pipe not immersed in fuel . . . . . . . . . . . . . . . . . . . . . . . Bring to same height as suction pipe
45 - Air enters suction piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten connectors
46 - Leakage from sealing organ . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace pump
47 - Not enough air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate, see page 6 and 10
48 - Nozzle worn or dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
49 - Nozzle filter clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean or replace
50 - Erroneous pump pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust to between 10 - 14 bar
51 - Flame stability spirat dirty, loose, or deformed . . . . . . . . . . . . . Clean, tighten in place, or replace
52 - Boiler room air vents insufficient . . . . . . . . . . . . . . . . . . . . . . . . Increase
53 - Too much air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate, see page 6 and 10
54 - Nozzle or filter dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
55 - Unsuitable nozzle delivery or angle . . . . . . . . . . . . . . . . . . . . . See recommended nozzles, page 5
56 - Loose nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten
57 - Impurities on flame stability spiral . . . . . . . . . . . . . . . . . . . . . . . Clean
58 - Erroneous head adjustment or not enough air . . . . . . . . . . . . . Adjust, see page 10; open gate valve
59 - Blast tube length unsuited to boiler . . . . . . . . . . . . . . . . . . . . . . Contact boiler manufacturer
60 - Connection or internal fault
14
SUGGESTED REMEDY