Fault - Probable Cause - Suggested Remedy - Roca TECNO 190-L Instrucciones De Instalación, Funcionamiento Y Mantenimiento

SIGNAL FAULT
No blink The burner does not
start
4 led The burner starts
and then goes into lock-
out
2 led After pre-purge and the
safety time,
the burner goes to lock-
out
and the flame does not
appear
7 led
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.
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
10 led
PROBABLE CAUSE
1 - No electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . Close all switches - Check fuses
2 - Linmit control device TL is open . . . . . . . . . . . . . . . . . . . . . Adjust or replace
3 - Safety control device TS is open. . . . . . . . . . . . . . . . . . . . . Adjust or replace
4 - Control box lock-out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset control box (no sooner than 10 s after the lock-out)
5 - Pump is jammed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
6 - Erroneous electrical connections . . . . . . . . . . . . . . . . . . . . Check connections
7 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
8 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
9 - Photocell short-circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace photocel
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 5 and 10
13 - Light oil solenoid valves fail to open (1st stage or safety) . . Check connections; replace coil
14 - 1st stage 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 - 1st stage operation of cylinder is faulty . . . . . . . . . . . . . . . . Change the cylinder
30 - Motor protection tripped . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset thermal cut-out
31 - Defective motor command control device . . . . . . . . . . . . . . Replace
32 - Missing phase thermal cut-out trips . . . . . . . . . . . . . . . . . . . . . . . Reset thermal cut-out when third phaseis re-connected
33 - Incorrect motor rotation direction. . . . . . . . . . . . . . . . . . . . . Change motor electrical connections
34 - Poorly adjusted head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust, see page 5, fig. (F)
35 - Poorly adjusted or dirty firing electrodes . . . . . . . . . . . . . . . Adjust, see page 5, fig. (B)
36 - Poorly adjusted fan air gate: too much air (1st stage). . . . . 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 12; 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 - Low pump pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increase
47 - 2nd stage operation of cylinder is faulty . . . . . . . . . . . . . . . Change cylinder
48 - Nozzle dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Renew nozzle
49 - Photocell dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
50 - Excess air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reduce
51 - Check if cause is in pump . . . . . . . . . . . . . . . . . . . . . . . . . . Feed burner from tank
or fuel supply system
52 - Water in tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Suck water from tank bottom with separate pump
53 - Air has entered the suction line . . . . . . . . . . . . . . . . . . . . . Tighten connectors
- Depression value too high (higher than 35 cm Hg):
54 - Tank/burner height difference too great. . . . . . . . . . . . . . . . Feed burner with loop circuit
55 - Piping diameter too small . . . . . . . . . . . . . . . . . . . . . . . . . . Increase
56 - Suction filters clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
57 - Suction valves closed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Open
58 - Paraffin solidified due to low temperature . . . . . . . . . . . . . . Add additive to light oil
59 - Return pipe not immersed in fuel . . . . . . . . . . . . . . . . . . . . Bring to same height as suction pipe
60 - Air enters suction piping . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten connectors
61 - Leakage from sealing organ . . . . . . . . . . . . . . . . . . . . . . . . Replace pump
62 - Not enough air. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate, see page 5 and 10
63 - Nozzle worn or dirty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
64 - Nozzle filter clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean or replace
65 - Erroneous pump pressure. . . . . . . . . . . . . . . . . . . . . . . . . . Adjust to between 10 - 14 bar
66 - Flame stability spirat dirty, loose, or deformed . . . . . . . . . . Clean, tighten in place, or replace
67 - Boiler room air vents insufficient . . . . . . . . . . . . . . . . . . . . . Increase
68 - Too much air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate, see page 5 and 10
69 - Nozzle or filter dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
70 - Unsuitable nozzle delivery or angle. . . . . . . . . . . . . . . . . . . See recommended nozzles, page 5
71 - Loose nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten
72 - Impurities on flame stability spiral . . . . . . . . . . . . . . . . . . . . Clean
73 - Erroneous head adjustment or not enough air . . . . . . . . . . Adjust, see page 10; open gate valve
74 - Blast tube length unsuited to boiler . . . . . . . . . . . . . . . . . . . Contact boiler manufacturer
75 - Connection or internal fault
14
SUGGESTED REMEDY
located near burner