20024198
28
GB
Maintenance
SYMBOL (1)
FAULT
PROBABLE CAUSE
SUGGESTED REMEDY
The burner does not start
1
- A limit or safety control device is open . . . . . . . . . . . . .
Adjust or replace
2
- Control box lock-out. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset
3
- Oil pressure switch intervenes (see page 19) . . . . . . . .
Adjust pressure switch or eliminate overpressure
4
- Motor protection tripped. . . . . . . . . . . . . . . . . . . . . . . . .
Reset thermal cut-out
5
- No electrical power supply. . . . . . . . . . . . . . . . . . . . . . .
Close all switches - Check connections
6
- Control box fuse blown . . . . . . . . . . . . . . . . . . . . . . . . .
Replace (2)
7
- Contact II of servomotor does not operate . . . . . . . . . .
Adjust cam II or replace servo-motorcontrol box
terminals 11 - 8
8
- Pump is jammed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replace
9
- Defective motor command control device . . . . . . . . . . .
Replace
10 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . .
Replace
11 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . .
Replace
The burner does not start and a
function lock-out occurs
12 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replace control box
13 - Photoresistor short-circuit . . . . . . . . . . . . . . . . . . . . . . .
Replace photoresistor
14 - 2-phase power supply thermal relay trips . . . . . . . . . . .
Reset thermal cut-out when third phase is re-con-
nected
The burner starts but stops at max-
imum air damper setting
15 - Contact I of servomotor does not operate . . . . . . . . . . .
Adjust cam I or replace servo-motorcontrol box
terminals 9 - -8
The burner starts and then goes
into lock-out
16 - Fault in flame detection circuit . . . . . . . . . . . . . . . . . . . .
Replace control box
The burner remains in pre-purging
phase
17 - Contact III of servomotor does not operate . . . . . . . . . .
Adjust cam III or replace servomotorcontrol box
terminals 10-8
After pre-purge and the safety time,
the burner goes to lock-out and the
flame does not appear
18 - No fuel in tank; water on tank bottom . . . . . . . . . . . . . .
Top up fuel level or suck up water
19 - Inappropriate head and air gate valve adjustments. . . .
Adjust
20 - Light oil solenoid valves fail to open . . . . . . . . . . . . . . .
Check connections; replace coil
21 - Nozzle clogged, dirty, or deformed . . . . . . . . . . . . . . . .
Replace
22 - Dirty or poorly adjusted firing electrodes . . . . . . . . . . . .
Adjust or clean
23 - Grounded electrode due to broken insulation . . . . . . . .
Replace
24 - High voltage cable defective or grounded . . . . . . . . . . .
Replace
25 - High voltage cable deformed by high temperature . . . .
Replace and protect
26 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . .
Replace
27 - Erroneous valves or transformer electrical connections
Check
28 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . .
Replace
29 - Pump unprimed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prime pump and see "Pump unprimes” (53-54)
30 - Pump/motor coupling broken. . . . . . . . . . . . . . . . . . . . .
Replace
31 - Pump suction line connected to return line . . . . . . . . . .
Correct connection
32 - Valves up-line from pump closed . . . . . . . . . . . . . . . . .
Open
33 - Filters dirty: line - pump - nozzle . . . . . . . . . . . . . . . . . .
Clean
34 - Incorrect motor rotation direction. . . . . . . . . . . . . . . . . .
Change motor electrical connections
The flame ignites normally but the
burner locks out when the safety
time has elapsed
35 - Defective photoresistor or control box . . . . . . . . . . . . . .
Replace photoresistor or control box
36 - Photoresistor dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clean
Firing with pulsations or flame
detachment, delayed firing
37 - Poorly adjusted head. . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjust
38 - Poorly adjusted or dirty firing electrodes . . . . . . . . . . . .
Adjust
39 - Poorly adjusted fan air gate: too much air . . . . . . . . . . .
Adjust
40 - Nozzle unsuited for burner or boiler . . . . . . . . . . . . . . .
See Nozzle Table
41 - Defective nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replace
42 - Inappropriate pump pressure . . . . . . . . . . . . . . . . . . . .
Adjust
The burner does not pass to 2nd
stage
43 - Control device TR does not close . . . . . . . . . . . . . . . . .
Adjust or replace
44 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replace
Uneven fuel supply
45 - Check if cause is in pump or in the fuel supply system
Feed the burner from a tank located nearby
Rusty pump internal parts
46 - Water in tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suck water from tank bottom with separate pump
Noisy pump, unstable pressure
47 - Air has entered the suction line . . . . . . . . . . . . . . . . . . .
Tighten connectors
- Depression value too high (higher than 35 cm Hg):
48 - Tank/burner height difference too great . . . . . . . . . . . .
Feed burner with loop circuit
49 - Piping diameter too small . . . . . . . . . . . . . . . . . . . . . . .
Increase
50 - Suction filters clogged . . . . . . . . . . . . . . . . . . . . . . . . . .
Clean
51 - Suction valves closed . . . . . . . . . . . . . . . . . . . . . . . . . .
Open
52 - Paraffin solidified due to low temperature . . . . . . . . . . .
Add additive to light oil
Pump unprimes after prolonged
pause
53 - Return pipe not immersed in fuel. . . . . . . . . . . . . . . . . .
Bring to same height as suction pipe
54 - Air enters suction piping . . . . . . . . . . . . . . . . . . . . . . . .
Tighten connectors
Pump leaks light oil
55 - Leakage from sealing organ . . . . . . . . . . . . . . . . . . . . .
Replace
pump
1