Burner Start-Up Cycle Diagnostics; Resetting The Control Box And Using Diagnostics - Riello RL 42 BLU Installation, Use And Maintenance Instructions

Flame inspection window
Clean the glass whenever necessary (Fig. 28).
D484
Flexible hoses
Check to make sure that the flexible hoses are still in good con-
dition and that they are not crushed or otherwise deformed.
Fuel tank
Approximately every 5 years, or whenever necessary, suck any
water or other impurities present on the bottom of the tank using
a separate pump.
7.3

Burner start-up cycle diagnostics

During start-up, indication is according to the followin table:
Colour code table
Sequences
Pre-purging
Ignition phase
Operation, flame ok
Operating with weak flame signal
Electrical supply lower than ~ 170V
Lock-out
Extraneous light
Legend:
Yellow
7.4

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.
RED LED on
wait at least 10s
The methods that can be used to reset the control box and use
diagnostics are given below.
Maintenance
Fig. 28
Green off
Press reset
Lock-out
for > 3s
23
Boiler
Clean the boiler as indicated in its accompanying instructions in
order to maintain all the original combustion characteristics in-
tact, especially the flue gas temperature and combustion cham-
ber pressure.
Lastly, check the condition of the flue gas stack.
Fuel pump and/or couplings replacement
In conformity with Fig. 29.
Colour code
Red
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.
Pulses
GB
D1108
Interval
Pulses
3s
Fig. 29
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