20035745
28
GB
Maintenance
If the problem lies in the suction line, check to make sure that the
filter is clean and that air is not entering the piping.
Hoses
Check periodically the flexible pipes conditions. They have
to be replaced at least
every 2 years
.
In case of use of gas oil and bio fuel blends, it is strongly rec-
ommended to inspect
even more frequently
the hoses and
replace them where contamination has occurred.
Check to make sure that the hoses are still in good condi-
tion.
Nozzles
Do not clean the nozzle openings; do not even open them.
The nozzle filters however may be cleaned or replaced as re-
quired. It is advisable to replace nozzles every year during regu-
lar maintenance operations. Combustion must be checked after
the nozzles have been changed.
Fuel tank
If water or contamination is present within the fuel tank, it is es-
sential that this is removed before the equipment is to be used.
This is extremely important when gas oil containing Bio diesel is
in use. If in doubt about how to achieve this then please contact
the fuel or oil tank supplier.
Combustion
In case the combustion values found at the beginning of the inter-
vention do not respect the standards in force or, in any case, do
not correspond to a proper combustion, contact the Technical
Assistant and have him carry out the necessary adjustments.
8.3
Burner start-up cycle diagnostics
During start-up, indication is according to the Tab. J:
Tab. J
8.4
Resetting the control box and using diagnostics
The control box features a diagnostics function through which
any causes of malfunctioning are easily identified (indicator:
RED
LED
).
To use this function, you must wait at least 10 seconds once it
has entered the safety condition (lock-out), and then press the re-
set button.
The control box generates a sequence of pulses (1 second
apart), which is repeated at constant 3-second intervals.
Once you have seen how many times the light pulses and identi-
fied the possible cause, the system must be reset by holding the
button down for between 1 and 3 seconds.
The methods that can be used to reset the control box and use
diagnostics are given below.
8.4.1
Resetting the control box
To reset the control box, proceed as follows:
–
Hold the button down for between 1 and 3 seconds.
The burner restarts after a 2-second pause once the button
is released.
If the burner does not restart, you must make sure the limit
thermostat is closed.
8.4.2
Visual diagnostics
Indicates the type of burner malfunction causing lockout.
To view diagnostics, proceed as follows:
–
Hold the button down for more than 3 seconds once the red
LED (burner lockout) remains steadily lit.
A yellow light pulses to tell you the operation is done.
Release the button once the light pulses. The number of
times it pulses tells you the cause of the malfunction, accord-
ing to the coding system indicated in the table on page 30.
EN 267
Excess air
Max output
1.2
Min output
1.3
Theoretical max. CO
2
0 % O
2
Calibration CO
2
%
CO
mg/kWh
= 1,2
= 1,3
15.2
12.6
11.5
100
Sequences
Colour code
Pre-purging
Ignition phase
Operation, flame ok
Operating with weak flame signal
Electrical supply lower than ~ 170V
Lock-out
Extraneous light
Key:
Off
Yellow
Green
Red
RED LED on
wait at least 10s
Lock-out
Press reset
for > 3s
Pulses
Interval
3s
Pulses
