Resetting The Control Box; Visual Diagnostics; Software Diagnostics; Opening Burner - Riello RL 42 BLU Installation, Use And Maintenance Instructions

7.4.1

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.
7.4.2

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
Tab. H.
Button pressed for
Between 1 and 3 seconds
More than 3 seconds
More than 3 seconds starting from the visual
diagnostics condition
The sequence of pulses issued by the control box identifies the
possible types of malfunction.
7.5

Opening burner

Disconnect the electrical supply from the
burner.
DANGER
➤ Remove screw 1)(Fig. 30) and withdraw the casing 2).
➤ Unscrew screw 3).
➤ Pull part A backward keeping it slightly raised to avoid dam-
aging the flameholder 6) on blast tube 7).
7.6

Closing the burner

Refit following the steps described but in reverse order; refit all
burner components as they were originally assembled.
20023224
Maintenance
7.4.3
Reports burner life by means of an optical link with the PC, in-
dicating hours of operation, number and type of lock-outs, se-
rial number of control box etc...
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 for 1 second and then press again for
over 3 seconds until the yellow light pulses again.
➤ Once the button is released, the red LED will flash inter-
mittently with a higher frequency: only now can the opti-
cal link be activated.
Once the operations are done, the control box's initial state
must be restored using the resetting procedure described
above.
Control box status
Control box reset without viewing visual diagnostics
Visual diagnostics of lock-out condition:
(LED pulses at 1-second intervals)
Software diagnostics by means of optical interface and PC
(hours of operation, malfunctions etc. can be viewed)
D837
24 GB

Software diagnostics

Fig. 30