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Idiomas disponibles
5.7.14 Frequency supply error
The flame control automatically detects the value of the frequen-
cy of the main supply in the range of 50 - 60 Hz, in both cases
working times are verified. The fault is indicated by way of the
blinking LED (see paragraph "Fault diagnostics - lockouts" on
page 27).
If the fault is detected before heat request the burner does
not start.
If the fault is detected during the pre-purging, the burner
remains in purge condition and the fault is appropriately sig-
nalled.
The fault is not detected during normal running, the burner
remains in this state. When the fault disappears, the burner
restarts.
5.7.15 Internal voltage fault
The flame control automatically detects if the internal voltage
works correctly. The fault is indicated by way of the blinking LED
(see paragraph "Fault diagnostics - lockouts" on page 27).
If the fault is detected during the initialisation check time, the
burner does not start.
If the fault is detected after a lockout the burner does not
start.
If the fault is detected after a shut-down test, the burner does
not start.
The fault is not detected during normal running, the burner
remains in this state. When the fault disappears, the burner
restarts.
5.7.16 Checking the fan motor
The flame control automatically detects the presence of the fan
motor and, in the event of a fault, it performs a lockout.
The lockout is indicated by the blinking of the LED (see para-
graph "Fault diagnostics - lockouts" on page 27).
5.7.17 Checking the electronic control circuit of the
1st stage valve
The flame control detects the presence of a fault in the 1st stage
valve's electronic control circuit, the fault is indicated by the flash-
ing led (see paragraph "Fault diagnostics - lockouts" on
page 27):
if the fault is detected during the initialisation, the burner
goes into lockout.
If the fault is detected during the pre-purging, the burner
goes into lockout.
During a recycling, if the fault is detected, the burner does
not start and goes into lockout.
The fault is not detected during normal running with flame,
the burner remains in this state.
The fault is not detected if the burner is in lockout.
5.7.18 Checking the short-circuit of the 1st stage
valve
The flame control, in addition to detecting a fault with the elec-
tronic control circuit of the 1st stage valve, can also detect the
presence of a short-circuit of the valve itself.
In this case the flame control goes into lockout to protect against
overcurrent.
This lockout can also occur if, even with the valve operating cor-
rectly, because of a fault the electric section inside connected to
the valve itself is damaged.
The fault is indicated by the blinking of the LEDs.
Start-up, calibration and operation of the burner
5.7.19 EEprom check
The flame control automatically detects if EEprom memory of mi-
cro-controller has failed and will perform a lockout. The lockout is
indicated by the blinking of the LED (see paragraph "Fault diag-
nostics - lockouts" on page 27).
5.7.20 Post-purging
Post-purging is a function that allows you to maintain the air purg-
ing even after the burner is switched off in the absence of the heat
request for a pre-set time.
The burner switches off the flame when the heat request thermo-
stat opens, cutting off the fuel supply to the valves.
The post-purging function is not performed:
after a lockout of the motor or valves;
if the heat request is interrupted during pre-purging.
Post-purging occurs:
if the heat request is interrupted during the safety time.
If the heat request is interrupted during normal operation.
After a lockout due to a parasite flame in pre-purging.
After a lockout due to a lack of flame at the end of the Ts.
After a lockout due to the finishing of the number of recycles
due to flame loss.
After a short-circuit 1st stage valve lockout.
NOTE:
If during post-purging there is an extraneous light or a parasite
flame the burner goes into lockout after 25 seconds.
If during post-purging there is a new heat request, the post-purg-
ing time is halted, the fan motor stops and a new burner operating
cycle starts.
5.7.21 Continuous purging
Continuous purging is a function that maintains the air ventilation
independently of the request for burner ignition.
From the moment when it is set, the motor remains in operation
both when the limit thermostat (TL) is not switched over (burner
switched off), and when the burner is in lockout.
When the limit thermostat (TL) switches the motor stops for the
stand-by time of 2 seconds and a new burner operating cycle
starts.
If during continuous purging when there is no heat request a
parasite flame is detected, the motor stays on and the fault is
signalled.
the burner reaches the lockout condition after 25 seconds.
If during continuous purging a parasite flame is detected, the
motor stays on but if a heat request occurs the motor is
switched off, the motor is not started after the standby (2sec)
if the parasite flame persists; the burner reaches the lockout
condition after 25 seconds. After the lockout has been reset
the motor is restarted.
The motor stays on even in a lockout.
The continuous purging is interrupted if an internal fault is
detected that brings the burner to the lockout condition
(eeprom, motor, 1st stage valve).
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