Resetting Of Burner Control; Diagnostics Of The Cause Of The Fault - Riello 908T4 Installation, Use And Maintenance Instructions

9.3

Resetting of burner control

When a lockout occurs, the burner control can be immediately re-
leased by pressing the "RESET" button (See Fig. 163 on
page 50).
NOTE:
For the meaning of the diagnostic codes and errors, see the
chapter List of error codes with operation using AZL21 Display ...
on page 58.
9.3.1

Diagnostics of the cause of the fault

After the lockout, the faults indicator lamp stays on fixed. Under
these conditions, it is possible to activate the visual diagnostic of
the cause of the fault based on the table of colour codes by keep-
ing the reset button pressed for more than 3 seconds (info but-
ton).
Error code table
Red blink code fault indica-
tor light
2 blinks
4 blinks
7 blinks
8 blinks
9 blinks
10 blinks
12 blinks
13 blinks
14 blinks
15 blinks
During the diagnosis of the cause of the fault, the outputs of the
controls are disabled
– The burner stays off
– Indication of external fault (alarm) on the clamp X2-03, foot 3
on fixed
At the outlet of the diagnostic of the cause of the fault the burner
is switched on again by resetting the burner control.
Press the reset button (info button) for about 1 second (<
3 seconds).
Operation, indications, diagnostic
Possible cause
No flame at the end of the safety time
– Fuel valves dirty or defective
– Flame detector dirty or defective
– Burner not adjusted correctly, no fuel
– Ignition device defective
– Extraneous light at burner start-up
Too many flame losses during operation (limitation of repetitions)
– Fuel valves dirty or defective
– Flame detector dirty or defective
– Burner adjustment incorrect
Free
Free
Wiring error or internal error, outlet contacts, other faults
Valve test
– Fuel valve 1 leak
Valve test
– Fuel valve 2 leak
POC error valve closure control
Error code 15 (e.g. according to the type of program module)
error code 20: Min gas pressure switch fault
error code 22: Safety loop error
Press the reset button again (info button) for at least 3 seconds
to activate the diagnostics interface.
If the diagnostic interface is started accidentally, a condition sig-
nalled by the blinking red indicator light, it can be deactivated by
pressing the reset button again (info button) for > 3 seconds.
The switching moment is indicated by a pulse of yellow light.
59 GB
Tab. W
20160576