1915
9
GB
6.
FAULTS / SOLUTIONS
Here below you can find some causes and the possible solutions for some problems that could cause a fail-
ure 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.
In the event of a burner lockout, more than
two consecutive burner reset operations
could cause damage to the installation. On
the third lockout, contact the Aftersales Ser-
vice.
If further lockouts or burner faults occur, in-
terventions must only be made by qualified,
authorised personnel (as indicated in this
manual, and in compliance with the laws
and regulations currently in force).
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
safety thermostat
is not
lock out.
The photoresistance sees false light.
Eliminate the light.
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.
Flame moves away or fails.
Check pressure and output of the fuel.
Check air output.
Change nozzle.
Check the coil of solenoid valve.
WARNING
DANGER