Riello BS2 912 T1 Montage- Und Bedienungsanleitung Seite 48

FAULTS
The burner runs normally
in the prepurge and igni-
tion cycle and locks out
after about 3 seconds.
The burner starts with an
ignition delay.
T h e b u r n e r l o c k s o u t
after the prepurge phase
due to flame-failure.
T h e b u r n e r l o c k s o u t
d u r i n g t h e p r e p u r g e
phase.
The burner continues to
repeat the starting cycle
without going on lock-
out.
3080
POSSIBLE CAUSES
Ph ase an d neut r al conn ect ion is
inverted.
The earth connection lacks or is ineffi-
cient.
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 posi-
tioned.
Air output is too high.
Valve brake is too close with insuffi-
cient gas output.
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 posi-
tion.
The flame exists.
The pressure test point (11, 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 open-
ing of the pressure switch.
H o w e v e r t h i s o n l y t e m p o r a r i l y ,
because the valve immediately closes
again, so then does the pressure
switch, because 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 necessary
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 instruc-
tions of this manual.
Adjust it.
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 connec-
tors.
Check the right position of the electrode
according to the instructions of this man-
ual.
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