Burner Start-Up Cycle Diagnostics; Resetting Of Control Box And Diagnostics Use; Control Box Reset; Visual Diagnostics - Riello 20068219 Installation, Use And Maintenance Instructions

6.9

Burner start-up cycle diagnostics

During start-up, indication is according to the colour code table
(Tab. M).
Sequences
Pre-purging
Ignition phase
Operation, flame OK
Operation with weak flame signal
Electrical supply below ~ 170V
Lockout
Extraneous light
Key (Tab. M):
Off Yellow
RED LED lit wait for at least 10s
The methods that can be used to reset the control box and use
diagnostics are given below.
6.9.2

Control box reset

To carry out the control box reset, 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.
6.9.3

Visual diagnostics

Indicates the type of burner malfunction causing lockout. To
visualise the 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 blink to tell you the operation is done.
– Release the button once the light has blinked. The number of
blinks indicates the reason for the malfunctioning (refer to the
coding in Tab. T on page 38).
PRESSURE ON THE BUTTON
From 1 to 3 seconds
More than 3 seconds
More than 3 seconds starting from the condi-
tion of visual diagnostics
The sequence of led pulses issued by the control box identifies
the possible types of malfunction, which are listed in the table
Tab. T on page 38.
Start-up, calibration and operation of the burner
Colour code
Tab. M
Green Red
Lockout Press reset for > 3s
STATE OF CONTROL BOX
Reset of the control box without visualisation of the visual diagnostics.
Visual diagnostics of the lockout condition:
(LED blinks at 1-second intervals).
Software diagnostics, with the help of optical interface and PC (possibility to visualise
the working hours, irregularities, etc.)
6.9.1

Resetting of control box and diagnostics use

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.
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 blinks and identi-
fied the possible cause, the system must be reset by holding the
button down for 1 - 3 seconds.
Pulses
6.9.4

Software diagnostics

Gives an analysis of the life of the burner, through optical connec-
tions with a PC showing the working hours, number and types of
lockout, control box serial number 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 blink 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 blinks 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 status must
be restored using the resetting procedure described above.
33 GB
3s interval Pulses
20075006
Tab. N
Tab. O