Control Box Visual Diagnostics; Led Colour Code Of The Control Box Reset Button - Riello G30 MRBLU CF Installation, Use And Maintenance Instructions

9.4

Control box visual diagnostics

The control box features a diagnostics function through which any causes of malfunctioning can be identified (indicator: RED LED).
To use this function, you must press and hold the reset button for at least 3 seconds once it has entered the safety condition (lockout).
The control box generates a sequence of led pulses, which is repeated at constant 2-second intervals.
RED LED illuminated
press and hold reset for 3 sec.
The sequence of led pulses issued by the control box identifies the possible types of malfunction, which are listed in the table below.
SIGNAL
2 led pulses

4 led pulses

7 led pulses

8 led pulses

To reset the control box after visual diagnostics have been displayed, you must press the reset button.
WARNING
9.4.1

Led colour code of the control box reset button

Operation status
Wait
Preheating
Pre-purging
Long pre-purging
Transformer turn on
Flame regular
Post-purging
Recycle
Continuous purging(*)
Extraneous light during preheating or wait
Extraneous light during post or continuous purging (*)
Extraneous light in block
Block
Block with continuous purging (*)
(*) only for applications provided for.
20011755
Maintenance

PROBABLE CAUSE
The flame does not stabilise at the end of the safety time:
– flame detector defective or dirty;
– oil valve defective or dirty;
– faulty ignition transformer;
– badly regulated burner.
Light present in the chamber before the burner's switching on or off:
– presence of a strange light before or after the limit thermostat switching over;
– presence of extraneous light during pre-purging;
– presence of extraneous light during post-purging.
Loss of flame during operation:
– badly adjusted burner;
– oil valve defective or dirty;
– flame detector defective or dirty;
Check and control of the oil heater (if there is one):
– faulty control thermostat or heater.
24
Interval
Led pulses
   
LED colour codes
LED off
Yellow
Green
Green
Green + Yellow blinking
Green + Yellow blinking
Green+Yellow
Green + Yellow blinking
Green
Yellow blinking
Green + Yellow blinking
Red + Yellow blinking
Red
Red + Green
GB
Led pulses
2s
  
ON
Blinking
speed
Seconds
Fast 0.3
Slow 0.3
Medium 2
Fast 0.3
Fast 0.3
Fast 0.3
 
OFF
0.3
2
1
0.3
0.3
0.3