Maintenance
SIGNAL FAULT POSSIBLE CAUSE SOLUTION
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 lockout)
4 - Pump is jammed . . . . . . . . . . . . . . . . . . . . Replace
5 - Erroneous electrical connections . . . . . . . . Check connections
6 - Defective control box . . . . . . . . . . . . . . . . . Replace
7 - Defective electrical motor. . . . . . . . . . . . . . Replace
2 pulses
After pre-purge and
the safety time, the
burner goes to
lockout at the end
of the safety time
8 - No fuel in tank; water on tank bottom. . . . . Top up fuel level or suck up water
9 - Inappropriate head and air damper adjust-
ments
Adjust, see page 17 and page 23
10 - Fuel solenoid valves fail to open (1st stage
or safety)
Check connections; replace coil
11 - 1st nozzle clogged, dirty, or deformed . . . . Replace
12 - Dirty or poorly adjusted firing electrodes . . Adjust or clean
13 - Grounded electrode due to broken insula-
tion
Replace
14 - High voltage cable defective or grounded . Replace
15 - High voltage cable deformed by high tem-
perature
Replace and protect
16 - Ignition transformer defective. . . . . . . . . . . Replace
17 - Erroneous valves or transformer electrical
connections
Check
18 - Control box defective . . . . . . . . . . . . . . . . . Replace
19 - Pump unprimed . . . . . . . . . . . . . . . . . . . . . Prime pump and see “Pump unprimes”
20 - Pump/motor coupling broken . . . . . . . . . . . Replace
21 - Pump suction line connected to return line Correct connection
22 - Valves up-line from pump closed . . . . . . . . Open
23 - Filters dirty: line - pump - nozzle . . . . . . . . Clean
24 - Defective photocell or control box . . . . . . . Replace photocell or control box
25 - Photocell dirty. . . . . . . . . . . . . . . . . . . . . . . Clean
26 - 1st stage operation of cylinder is faulty . . . Change the cylinder
27 - Motor protection tripped . . . . . . . . . . . . . . . Reset thermal relay
28 - Defective motor command remote control
device
Substitute it
29 - Missing phase thermal cut-out trips . . . . . . Reset thermal cut-out when third phase
is re-connected
30 - Incorrect motor rotation direction . . . . . . . . Change motor electrical connections
4 pulses
The burner starts
and then goes into
lockout
31 - Photocell short-circuit. . . . . . . . . . . . . . . . . Replace photocell
32 - Light is entering or flame is simulated . . . . Eliminate light or replace control box
7 pulses
Flame detachment 33 - Poorly adjusted head . . . . . . . . . . . . . . . . . Adjust, see page 17,
34 - Poorly adjusted or dirty firing electrodes . . Adjust, see Fig. 12 on page 17
35 - Poorly adjusted fan air gate: too much air . Adjust
36 - 1st nozzle is too big (pulsation) . . . . . . . . . Reduce 1st nozzle delivery
37 - 1st nozzle is too small (flame detachment) Increase 1st nozzle delivery
38 - 1st nozzle dirty, or deformed . . . . . . . . . . . Replace
39 - Inappropriate pump pressure Adjust to between 10 and 14 bar
40 - 1st stage nozzle unsuited to burner or boiler See Nozzle Table, page 16; reduce 1st
stage nozzle
41 - Defective 1st stage nozzle . . . . . . . . . . . . . Replace
The burner does
not pass to 2nd
stage
42 - Control device TR does not close . . . . . . . Adjust or replace
43 - Defective control box . . . . . . . . . . . . . . . . . Replace
44 - 2nd stage sol. valve coil defective . . . . . . . Replace
45 - Piston jammed in valve unit . . . . . . . . . . . . Replace entire unit
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