Riello 40 Installation, Use And Maintenance Instructions page 28

COLOUR CODE OF THE CONTROL BOX RESET BUTTON LED
Operating status
Stand by
Pre-purging
Transformer ignition
Regular flame
Post-purging
Recycle
Continuous purging (*)
Flame present during stand by
Lockout
Lockout with continuous purging (*)
(*) only for suitable applications.
RESET CONTROL BOX
To reset the control box proceed as follows:
 Press the reset button for 1-2 seconds. If the burner fails to restart check that the limit thermostat (TL) is
closed.

Should the reset button of the control box continue to flash showing the cause of failure (RED
LED), push the button again for not more than 2 seconds.
Warning:
If the reset button is pressed for more than 2 seconds the control box goes into the visual diagnostics phase
and the LED indicator begins to flash (see VISUAL DIAGNOSTICS CONTROL BOX).
RECYCLE FUNCTION
The control box allows a recycle, i.e. complete repetition of the start-up programme, making up to 3 attempts, in
the event the flame goes out during operation.
If the flame goes out yet again (4
recycle, the 3 attempts are restored when the limit thermostat (TL) switches.
LOGGING OF BURNER OPERATING PARAMETERS
With this control box, data - i.e. the number of lockout that have occurred, the type of lockout that has occurred (just
the last one) and the oil valve opening operating time - can be logged even when there is no power supply. That
way, you can determine how much fuel has been consumed during operation. For the display of these parameters
it is necessary to connect the diagnostic software kit as described on page 2.
ADDITIONAL, PROGRAMMABLE CONTROL BOX FUNCTIONS
POST-PURGING FUNCTION (t6)
Post-purging is a function that keeps air purging on even after the burner switches off. The burner switches
off when the limit thermostat (TL) opens, consequently cutting off the fuel supply to the valves. To use this
function the reset button must be pressed when the limit thermostat (TL) is not switched (burner switched off).
Post-purging time can be set to a maximum of 6 minutes, proceeding as follows:

Press and hold the reset button for at least 5 seconds till the LED indicator changes to red.

Set the desired time by pressing the button the appropriate times: once = post-purging for 1 minute.

After 5 seconds the control box automatically shows the minutes set by the red LED blinking: 1 led pulse =
post-purging for 1 minute.
To reset this function, press and hold the button for at least 5 seconds at least, till the LED indicator changes to red
then release it without carrying out any operation, then wait for 20 seconds for the burner to start again.
If during post-purging there is a new request for heat, post-purging time is halted and a new burner operating cy-
cle starts when the limit thermostat (TL) switches.
The control box's factory settings are as follows: 0 minutes = no post-purging.
3389
LED colour codes
th
time) the burner goes into lockout. If there is a new heat request during the
10 GB
Led unlit
Green
Green
Green
Green
Green
Green
Led unlit
Red
Red + Green