Burner Start-Up Cycle Diagnostics; Resetting The Control Box And Using Diagnostics - Riello 3470510 Installation, Use And Maintenance Instructions

9.5

Burner start-up cycle diagnostics

During start-up, indication is according to the Tab. K:
9.6

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 (lockout), and then press the re-
set button.
RED LED on
wait at least 10s
The methods that can be used to reset the control box and use
diagnostics are given below.
9.6.1 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.
9.6.2 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 29.
BUTTON PRESSED FOR
Between 1 and 3 seconds
More than 3 seconds
More than 3 seconds starting from the visual diagnos-
tics condition
The sequence of pulses issued by the control box identifies the
possible types of malfunction, which are listed in the table on
page 29.
6426
Maintenance
Press reset
Lock-out
for > 3s
CONTROL BOX STATUS
Control box reset without viewing visual diagnostics.
Visual diagnostics of lockout condition: (Led pulses at 1-second intervals).
Software diagnostics by means of optical interface and PC (hours of opera-
tion, malfunctions etc. can be viewed)
Sequences
Pre-purging
Ignition phase
Operation, flame ok
Operating with weak flame signal
Electrical supply lower than ~ 170V
Lock-out
Extraneous light
Key: Off
 
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.
Pulses

9.6.3 Software diagnostics
Reports burner life by means of an optical link with the PC, indi-
cating hours of operation, number and type of lock-outs, serial
number of control box etc ...
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 for 1 second and then press again for
over 3 seconds until the yellow light pulses again.
Once the button is released, the red LED will flash intermit-
tently with a higher frequency: only now can the optical link
be activated.
Once the operations are done, the control box's initial state must
be restored using the resetting procedure described above.
28 GB
Colour code







Yellow
Green

Interval
3s

Red

Tab. K
Pulses