Start-Up Cycle Diagnostics; Resetting The Control Box And Using Diagnostics - Riello Two stage operation forced draught natural gas/propane burner Installation & Operating Manual

START-UP CYCLE DIAGNOSTICS

During start-up, indication is according to the followin table:
Sequences
Pre-purging
Ignition phase
Operation, flame ok
Operating with weak flame signal.
Electrical supply lower than ~ 170V
Lock-out
Extraneous light
Index: Off

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 identified the possible cause, the system must be reset
by holding the button down for between 1 and 3 seconds.
RED LED on
wait at least 10s
The methods that can be used to reset the control box and use diagnostics are given below.
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.
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,
indicated in the table below.
3245
COLOUR CODE TABLE
Yellow Green
Press reset
> 3s
Lock-out for
Colour code
Red
Interval
Pulses 3s
GB
Pulses
13