ENGLISH
31 / 36
0006160064_201510
TROUBLESHOOTING INSTRUCTIONS
ANOMALY
Appliance locked out due to no fla-
me (red light lit).The fault is in the
flame control device.
The burner goes into “lock-out”,
gas flows, but there is no flame
(red light on).Fault in ignition cir-
cuit.
The burner goes into “lock-out”,
gas flows, but there is no flame
(red light on).
POSSIBLE CAUSE
1
Disturbance to ionisation current
from the ignition transformer.
2
Flame sensor (ionisation probe)
inefficient.
3
Flame sensor (ionisation probe)
position incorrect.
4
Ionisation probe or relative ground
cable.
5
Electrical connection cut-off by
flame sensor.
6
Inefficient draught or fumes passa-
ge blocked.
7
Flame disc or combustion heads
dirty or worn.
8
Faulty equipment.
9
No ionisation.
1
Fault in ignition circuit
2
Ignition transformer cable dischar-
ges to earth.
3
Ignition cable disconnected.
4
Ignition transformer faulty.
5
The distance between electrode
and ground is incorrect.
6
Isolator dirty, and electrode dischar-
ges to earth.
1
Air/gas ratio incorrect.
2
Gas pipe has not been properly
bled of air (in the case of first igni-
tion).
3
The gas pressure is insufficient or
excessive.
4
Air flow between disc and head too
narrow.
REMEDY
1
Invert the ignition transformer power
supply (230V side) and check using an
analogue micro-ammeter.
2
Replace flame sensor.
3
Correct the position of the flame sensor,
and then check for its efficiency by con-
necting the analogue micro-ammeter.
4
Check visually and using the instrument.
5
Restore the connection.
6
Ensure that the boiler fumes passage
and chimney connection are free.
7
Visually check and replace, if necessary.
8
Replace it.
9
If the “ground” of the equipment is
not efficient, there is no ionisation
current.Check the efficiency of the
“earth” at the terminal concerned in the
equipment and at the “earth” connection
of the electrical system.
1
Check the ignition transformer power
supply (230V) and high voltage circuit
(electrode to earth or isolator broken
under locking terminal).
2
Replace it.
3
Connect.
4
Replace it.
5
Position at the correct distance.
6
Clean or change the isolator or electro-
de.
1
Correct the air/gas ratio (there is pro-
bably too much air or very little gas).
2
Bleed out the gas pipe again, taking
great care.
3
Check the maximum gas pressure
value at the time of ignition (use a water
pressure gauge, if possible).
4
Adjust the disc/head opening.
Summary of Contents for GI 500 MC
Page 2: ......
Page 34: ...ITALIANO 32 36 0006160064_201510 SCHEMI ELETTRICI ...
Page 35: ...ITALIANO 33 36 0006160064_201510 ...
Page 36: ...ITALIANO 34 36 0006160064_201510 ...
Page 38: ...ITALIANO 36 36 0006160064_201510 ...
Page 70: ...ENGLISH 32 36 0006160064_201510 WIRING DIAGRAMS ...
Page 71: ...ENGLISH 33 36 0006160064_201510 ...
Page 72: ...ENGLISH 34 36 0006160064_201510 ...
Page 74: ...ENGLISH 36 36 0006160064_201510 ...
Page 75: ......