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8
Faults - Probable causes - Solutions
Below is a list of some of the causes and possible solutions to a
series of problems that might be encountered and could cause a
failure to start or irregular burner operation. A fault turn-on the led
into the reset button of the control box.
The burner will attempt to a new ignition only after pushing the re-
set button. After this if the burner functions correctly, the lock-out
can be attributed to a temporary fault.
However, if lockout continues, you must determine the cause of
the problem and take the action illustrated in the solution column
in the Tab. M.
8.1
Burner start-up difficulties
Faults
The burner will not start when
the limit thermostat closes.
Burner runs normally in the
prepurge and ignition cycle and
locks out after 5 seconds ca.
Burner starts with an ignition
delay.
The manufacturer cannot accept responsibility for
any damage to persons, animals or property due
to error in installation or in the burner adjustment,
WARNING
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.
Faults - Probable causes - Solutions
Possible causes
Lack of electrical supply.
The flame sensor sees false light.
Resistance or start thermostats are faulty.
The connections in the control box are
wrongly inserted.
The flame sensor is dirty.
The flame sensor is defective.
Flame moves away or fails.
The ignition electrodes are wrongly posi-
tioned.
Air output is too high.
Nozzle dirty or worn.
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 Service.
WARNING
If further lockouts or burner faults occur, interven-
tions must only be made by qualified, authorised
personnel (as indicated in this manual, and in
compliance with the laws and regulations current-
DANGER
ly in force).
Solution
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.
Eliminate the light.
Replace them.
Check and connect completely all the plugs.
Clean it.
Change it.
Check pressure and output of the fuel.
Check air output.
Change nozzle.
Check the coil of solenoid valve.
Adjust them according to the instructions of this
manual.
Set the air output.
Replace it.
25
GB
Tab. M
20130035
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