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SIGNAL
FAULT
No blink
The burner does
not start
2 pulses
After pre-purge and
the safety time, the
burner goes to
lockout at the end
of the safety time
4 pulses
The burner starts
and then goes into
lockout
7 pulses
Flame detachment 29 - Poorly adjusted head . . . . . . . . . . . . . . . . . Adjust, see page 17,
Uneven fuel supply 36 - Check if cause is in pump or fuel supply
Internally rusted
pump
Noisy pump, unsta-
ble pressure
Maintenance
POSSIBLE 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
4 - Pump is jammed. . . . . . . . . . . . . . . . . . . . . Replace
5 - Erroneous electrical connections . . . . . . . . Check connections
6 - Defective control box . . . . . . . . . . . . . . . . . Replace
7 - Defective electrical motor . . . . . . . . . . . . . . Replace
8 - Defective motor capacitor . . . . . . . . . . . . . Replace it
9 - No fuel in tank; water on tank bottom . . . . . Top up fuel level or suck up water
10 - Inappropriate head and air damper adjust-
ments
11 - Fuel solenoid valves fail to open (1st stage
or safety)
12 - 1st nozzle clogged, dirty, or deformed . . . . Replace
13 - Dirty or poorly adjusted firing electrodes . . Adjust or clean
14 - Grounded electrode due to broken insula-
tion
15 - High voltage cable defective or grounded . Replace
16 - High voltage cable deformed by high tem-
perature
17 - Ignition transformer defective . . . . . . . . . . . Replace
18 - Erroneous valves or transformer electrical
connections
19 - Defective control box . . . . . . . . . . . . . . . . . Replace
20 - Pump unprimed . . . . . . . . . . . . . . . . . . . . . Prime pump
21 - Pump/motor coupling broken . . . . . . . . . . . Replace
22 - Pump suction line connected to return line
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 - Photocell dirty. . . . . . . . . . . . . . . . . . . . . . . Clean
27 - Photocell short-circuit . . . . . . . . . . . . . . . . . Replace photocell
28 - Light is entering or flame is simulated . . . . Eliminate light or replace control box
30 - Poorly adjusted or dirty firing electrodes . . Adjust, see Fig. 12 on page 17
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)
34 - 1st nozzle dirty, or deformed . . . . . . . . . . . Replace
35 - Pump pressure not suitable . . . . . . . . . . . . Adjust
system
37 - Water in tank . . . . . . . . . . . . . . . . . . . . . . . Suck water from tank bottom with sepa-
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 fuel
29
GB
SOLUTION
after the lockout)
Adjust, see page 17 and page 23
Check connections; replace coil
Replace
Replace and protect
Check
Correct connection
Increase 1st nozzle delivery
Feed burner from tank located near
burner
rate pump
6426
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