Riello Gulliver BS2D TL Installation, Use And Maintenance Instructions page 66

FAULTS
The burner runs nor-
mally in the prepurge
and ignition cycle and
locks out after about 3
seconds.
The burner starts with
an ignition delay.
The burner doesn't
change over the 2 nd
stage.
The burner locks out
after the prepurge
phase due to flame-
failure.
The burner locks out
during the prepurge
phase.
The burner continues
to repeat the starting
cycle without going on
lock-out.
3115
POSSIBLE CAUSES
Phase and neutral connection is
inverted.
The earth connection lacks or is in-
efficient.
The ionization probe is earthed or not
in contact with the flame, or its wiring
to the control box is broken, or there
is a fault on its insulation to the earth.
The ignition electrodes is wrongly
positioned.
Air output is too high.
Valve brake is too close with insuffi-
cient gas output.
The air damper is locked.
The 2 nd stage gas valve doesn't
pull in.
The solenoid valves is passing too
little gas.
The solenoid valves are defective.
The ignition arc is irregular or has
failed.
The pipe has not been purged from
the air.
The air pressure switch does not
change over to the operational po-
sition.
The flame exists.
The pressure test point (13, fig. 9,
page 9) is badly positioned.
The gas pressure in the gas-mains
lies very close to the value to which
the gas pressure switch has been set.
The sudden falling-off pressure at the
opening of the valve causes the
opening of the pressure switch. How-
ever this only temporarily, because
the valve immediately closes again,
so then does the pressure switch, be-
cause the pressure builds-up again,
causing the cycle to be repeated
over and over.
Invert them.
Make the earth connection efficient.
Check the right position and if neces-
sary set it according to the instructions
of this manual.
Reset the electrical connection.
Replace the faulty connection.
Adjust it according to the instructions
of this manual.
Set the air output according to the in-
structions of this manual.
Adjust it.
Check the right working.
Check the right electrical connection.
Failed valve: replace it.
The air damper doesn't close com-
pletely and therefore it doesn't pull in
the 2 nd stage valve micro: check the
micro working.
Check the pressure in the network and/
or adjust the solenoid valve according to
the instructions of this manual.
Change them
Check the right insertion of the
connectors.
Check the right position of the elec-
trode according to the instructions of
this manual.
Carry out a complete breathing of the
line of gas-supply.
The pressure switch is faulty, change it.
The air pressure is too low, (the head is
bad adjusted).
Faulty valves: replace them.
Place it in the right position according
to the instructions of this manual on
page 9, chapter 4.2.
Lower and set the pressure switch.
14 GB
SOLUTION