Riello RL Series - 9.1 Burner start-up cycle diagnostics; 9.2 Resetting the control box and using diagnostics; 9.3 Resetting the control box; 9.4 Visual diagnostics

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20111051
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Maintenance
9.1 Burner start-up cycle diagnostics
During start-up, indication is according to the following table:
9.2 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
reset 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.
9.3 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.
9.4 Visual diagnostics
Indicates the type of burner malfunction causing lock-out.
To view diagnostics, proceed as follows:
– Hold the button down for more than 3 seconds once the red
LED (burner lock-out) 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, according to
the coding system indicated in the table on pag. 26.
Colour code table
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
Press reset
for > 3s 3sPulses Pulses
RED LED on
wait at least 10s
Interval
Lock-out