2694
9
GB
6.
FAULTS / SOLUTIONS
Here below you can find some causes and the possible solutions for some problems that could cause a
failure to start or a bad working of the burner.
A fault usually makes the lock-out lamp light which is situated inside the reset button of the control box
(3, fig. 1, page 1).
When lock out lamp lights the burner will attempt to light only after pushing the reset button. After this if the
burner functions correctly, the lock-out can be attributed to a temporary fault.
If however the lock out continues the cause must be determined and the solution found.
WARNING
The manufacturer cannot accept responsibility for any damage to persons, animals or property due to error
in installation or in the burner adjustment, or due to improper or unreasonable use or non observance of the
technical instruction enclosed with the burner, or due to the intervention of unqualified personnel.
FAULTS
POSSIBLE CAUSES
SOLUTION
The burner doesn’t
start when the limit
thermostat closes.
Lack of electrical supply.
Check presence of voltage in the
L1 - N clamps of the 7 pin plug.
Check the conditions of the fuses.
Check that the safety thermostat is not
lock out.
The photoresistance sees false light.
Eliminate the light.
Heater or start thermostats are faulty.
Replace them.
The connections in the control box are
wrongly inserted.
Check and connect completely all the
plugs.
Burner runs normal-
ly in the prepurge
and ignition cycle
and locks out after 5
seconds ca.
The photoresistance is dirty.
Clear it.
The photoresistance is defective.
Change it.
The fibre optic is dirty.
Clear it.
The fibre optic is not in line with the hole
of the diffuser disc-holder assembly
Check the line-up.
Flame moves away or fails.
Check pressure and output of the fuel.
Check air output.
Change nozzle.
Check the coil of solenoid valve.
Burner starts with an
ignition delay.
The ignition electrodes are wrongly
positioned.
Adjust them according to the
instructions of this manual.
Air output is too high.
Set the air output according to the
instructions of this manual.
Nozzle dirty or worn.
Replace it.
