Operation, Indications, Diagnostic; Control Sequence In The Event Of A Fault - Riello 908T4 Installation, Use And Maintenance Instructions

9

Operation, indications, diagnostic

9.1

Control sequence in the event of a fault

In the event of a lockout, the outlets for fuel valves, burner motor
and ignition devices should be immediately deactivated (<1 sec-
ond).
Causes
Mains voltage interruption
Voltage below the undervoltage threshold
Voltage above the undervoltage threshold
Extraneous light before the safety time
Extraneous light during the standby time
No flame at the end of the safety time
Flame loss during the operation
Min pressure switch:fault during operation
In the event of a lockout, the LME71... remains in lockout and the
red fault indicator lamp comes on. The burner control can be im-
mediately released. This state is maintained also when the mains
supply is interrupted.
Operation, indications, diagnostic
Answer
Restart
Safety switch off
Restart
Lockout
Starting pre-purging, lockout after about 30 seconds maximum
3 recirculation attempts, then shutdown
Factory settings: lockout
Can be configured: (depending on the program module 1 x repe-
tition
Switching of and on the pre-purging
57 GB
Tab. U
20160576