42
COMMISSIONING AND MAINTENANCE
EXTRANEOUS LIGHT OR FALSE FLAME SIGNAL
If extraneous light or a false flame signal is detected when the
fan motor is running during pre-purging, the burner stays in
purge mode until the light or flame signal stops. If this does not
occur within 25 seconds, the burner locks out.
The burner also locks out if extraneous light or a false flame
signal is detected three times.
PRE AND POST-IGNITION
During pre-ignition, the ignition electrode switches on 2 sec-
onds before the fuel oil valve opens.
During post-ignition, the ignition electrode switches off 3 sec-
onds after the end of safety time.
Ignition remains active throughout safety time.
NOTE
If the ignition cycle repeats continuously or a series of heat re-
quests are received in a short time, the functioning of the igni-
tion transformer is limited to one cycle a minute.
POWER SUPPLY FREQUENCY ERROR
− The burner controller automatically detects the frequency
of the main power supply over the interval of 50 to 60 Hz.
Operating times are verified for both frequencies.
− An error is indicated by the LED flashing (see the “Fault
diagnosis - lockouts” section on page 38).
− If an error is detected before a heat request is made or
during pre-heating, the burner does not start up and the
error is signalled.
− If an error is detected during pre-purging, the burner re-
mains in purge mode and the error is signalled.
− If no error is detected during normal functioning, the
burner continues to function normally.
− The burner starts up as soon as the error disappears.
FAN MOTOR CONTROL
The burner controller automatically detects the presence of the
fan motor and enters lockout in the event of a fan motor failure.
An error is indicated by the LED flashing (see the “Fault diagnosis
- lockouts” section on page 38).
INTERNAL VOLTAGE ERROR
The burner controller automatically checks that internal voltage
is correct. An error is indicated by the LED flashing (see the “Fault
diagnosis - lockouts” section on page 38).
− If an error is detected during initialisation, the burner
does not start up.
− If an error is detected after a lockout, the burner will not
start up.
− If an error is detected after a shutdown test, the burner
will not start up.
If no error is detected during normal functioning, the burner
continues to function normally.
The burner starts up as soon as the error disappears.
RESET / REMOTE RESET BUTTON ERROR
If the reset or remote reset button is held down for more than 60
seconds, the LED flashes to indicate an error until the button is
released. (See the “Fault diagnosis - lockouts” section on page
38).
This is merely a signal of the error condition.
− If an error is detected during pre-ventilation or safety
time, the burner does not enter lockout but continues
with the startup sequence.
− If an error is detected during normal functioning, the
burner shuts down and does not restart. The error is sig-
nalled.
− If an error is detected while the burner is already locked
out, no signal is displayed but the burner cannot be re-
set.
The LED stops flashing as soon as the error disappears.
EEPROM CONTROL
The burner controller automatically checks for errors in the mi-
crocontroller EEPROM and enters lockout if an error is detected.
An error is indicated by the LED flashing (see the “Fault diagnosis
- lockouts” section on page 38).
DEACTIVATION OF AUTOMATIC PRE-HEATING
The automatic pre-heating functioning can be deactivated by
pressing the reset or remote reset button.
Pre-heating remains de-activated until:
− a lockout occurs;
− mains power fails or is switched off;
− the boiler shuts down for a controlled shutdown and re-
start.
Pre-heating de-activation sequence
Colour of
button LED
Only de-activate the pre-heating if no lockout
or errors are present
-
Deactivate the pre-heating by means of the
reset or remote reset button.
-
Switch on the burner and simultaneously hold
down the reset or remote reset button for 3
seconds.
RED
Release the reset or remote reset button with-
in 3 seconds.
OFF
The burner will de-activate pre-heating only
if the reset or remote reset button is released
within 3 seconds.
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