20197230
24
GB
Faults / Solutions
Here below you can find some causes and the possible solutions
for some problems that could cause a failure to start or incorrect
operation of the burner.
A fault usually makes the lockout LED signal which is situated in-
side the reset button of the control box.
When lockout lamp comes on the burner will attempt to light only
after pushing the reset button. After this if the burner functions
correctly, the lockout can be attributed to a temporary fault that is
not dangerous.
If however the lockout continues the cause must be determined
and the solution found.
Tab. K
10
Faults / Solutions
FAULTS
POSSIBLE CAUSE
SOLUTION
The burner does not 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 safety thermostat is not lock out.
Heater or enabling thermostats are faulty.
Replace them.
The connections in the control box are wrongly
inserted.
Check and connect completely all the
plugs.
The burner goes into
lockout mode before or
during the pre-purging.
The flame sensor sees extraneous light.
Eliminate the light.
Burner runs normally in
the prepurge and ignition
cycle and locks out after 5
seconds ca.
The flame sensor is dirty.
Clear it.
The flame sensor is faulty.
Replace it.
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 igni-
tion 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.
The burner goes into
lockout mode during
operation.
Flame disappears four times.
Clean or replace the flame sensor.
Replace the dirty or deteriorated nozzle.
Failure to go off.
Check the efficiency of the flame sensor.
Check the efficiency of the piston on the pressure
adjuster.
Check the efficiency of the pump cut off valve.
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 un-
qualified personnel.
Summary of Contents for 3749251
Page 2: ...Original instructions...
