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98318_201204
TROUBLESHOOTING
TYPE OF PROBLEM
POSSIBLE CAUSE
SOLUTION
The burner goes into lock-out with the flame
on (Red lamp on). The fault is in the flame
control device.
1) Photocell severed or fouled with smoke
2) Insufficient draft
3) Photocell circuit severed
4) Fouled disk or orifice
1) Clean or replace it
2) Check all the smoke ducts in the boiler and in
the chimney
3) Replace the unit
4) Clean
The burner goes into lock-out spraying fuel
but the flame does not ignite (Red lamp
on). The problem is in the ignition device,
providing the fuel is in good condition (not
polluted with water or other impurities) and
sufficiently atomised.
1) Ignition circuit severed
2) The ignition transformer leads have dried out.
3) The ignition transformer leads are not properly
connected
4) Ignition transformer interrupted.
5) The electrode tips are not at the correct
distance
6) The electrodes discharge to earth because
they are dirty or due to cracked insulation; also
check under the insulation clamps.
1) Check the entire circuit
2) Replace them
3) Lock
4) Replace it
5) Return them in the required position
6) Clean or replace them, if necessary
The burner goes into lock-out spraying
fuel but the flame does not ignite. (red
indicator lit).
1) Pump pressure is not normal
2) Water in the fuel
3) Excessive combustion air flow
4) Air passage between disk and blast tube
excessively closed
5) Nozzle worn or fouled
1) Remove it.
2) Remove it from the tank with a suitable pump
(never use the burner pump for this purpose).
3) Reduce combustion air flow
4) Rectify the position of the combustion head
control device
5) Clean or replace it
The burner goes into lock-out without
spraying fuel (Red lamp on).
1) One phase missing
2) Inefficient electric motor
3) Diesel fuel not reaching the pump
4) No diesel fuel in the tank
5) Gate valve on the suction pipe
closed
6) Nozzle clogged
7) Motor (three-phase) rotates in the wrong
direction (see arrow)
8) Bottom valve leaking or jammed
9) Defective pump
10) Inefficient solenoid valve
11) Voltage too low
1) Check the supply line
2) Repair or replace it
3) Check the suction pipe
4) Fill it up
5) Open it
6) Remove and clean it thoroughly
7) Change one phase in the supply switch
8) Remove and clean it
9) Replace it
10) Check and replace, if necessary
11) Contact the electric company
Noisy burner pump
1) Pipe diameter too small
2) Air infiltration in the pipes
3) Dirty filter
4) Excessive distance between the tank and
the burner or numerous accidental leakages
(elbows, curves, bottlenecks, etc.)
5) Deteriorated flexible pipes
1) Replace it according to instructions
2) Check and eliminate infiltrations
3) Remove and wash it
4) Adjust the length of the suction pipe to reduce
the distance
5) Replace them
Burner fails to start
1) Thermostats (boiler or environment) or pressure
switches open
2) Photocell in short circuit
3) Lack of voltage due to the main switch being
off or meter maximum switch tripped or lack of
voltage in the mains
4) Thermostat line not wired according to diagram
or some thermostat has not activated
5) Fault in the appliance
1) Increase the value or wait until they activate
due to natural reduction of the temperature or
pressure
2) Replace it
3) Activate switches or wait for power to return
4) Check connections and thermostats
5) Replace it
