25
2903397
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 lock-out lamp light which is situated
inside the reset button of the control box (8, Fig. 1 to page 8).
When lock out lamp lights the burner will attempt to light only after
pushing the reset button. After this if the burner functions correct-
ly, 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.
10
Faults / Solutions
WARNING
In the event the burner stops, in order to prevent
any damage to the installation, do not unblock the
burner more than twice in a row. If the burner
locks out for a third time, contact the customer
service.
DANGER
In the event there are further lockouts or faults
with the burner, the maintenance interventions
must only be carried out by qualified, authorised
personnel, in accordance with the contents of this
manual and in compliance with the standards and
regulations of current laws.
Faults
Possible Causes
Solution
The burner will not start
when the limit thermostat
closes.
Lack of electrical supply.
Check presence of voltage in the L - N clamps of
the control box.
Check the conditions of the fuses.
Check that safety thermostat limit is not lock out.
The photoresistance sees false light.
Eliminate the light.
The connections in the control box are wrongly
inserted.
Check and connect completely all the plugs.
Burner runs normally in the
prepurge and ignition cycle
and locks out after 5 sec-
onds ca.
The photoresistance is dirty.
Clean it.
The photoresistance is defective.
Change 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.
Nozzle dirty or worn.
Replace it.
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 G20D
Page 2: ...Original instructions...
