Operating Defects; Preliminary Tests; Possible Defects; Standard Gas Change - Accorroni GHIBLI 4-5-6 ELITE Technical Information

f) start the air heater according to what is
indicated in point 5.2
g) insert the water column pressure gauge tube
into the pressure outlet on the gas unit burner
(fig. 22) after having backed off the closing
screw a few turns. Check that the supply
pressure corresponds to what is indicated in
the technical data table. If the gas supply
pressure to the burner does not correspond to
the value indicated, use the pressure regulator
(fig. 22) to obtain the correct value. Turn
counterclockwise to decrease the pressure
and clockwise to increase the pressure
h) remove the pressure gauge tube and tighten
the pressure inlet screw. Insert the regulator
protection plug (original equipment)
l) use a special spray or electronic leak detector
to identify any leaks in the gas circuit

7. OPERATING DEFECTS

7.1 PRELIMINARY TESTS

Before performing specific tests, make sure that:
a) the electric power supply is properly connected
(with particular attention focused on the phase-
neutral polarity and earth connector)
b) the gas supply is correct, the gas on-off valve
is open and the pressure to the burner
corresponds to what is indicated in the
technical data table
c) the external terminal of the combustion air
intake and combustion product exhaust duct
is not obstructed

STANDARD GAS CHANGE

Plastic pressure
regulator screw
Protection plug
Gas injector

7.2 POSSIBLE DEFECTS

The following is a list of possible defects along
with their probable causes. The information
indicated in italics refers to repair operations or
corrections which are the responsibility of the
authorised Technical Service Centre.
7.2.1 The appliance does not start even if the
conditions described in the previous points
are correct.
a) the flame detection circuit of the control
- Replace the control equipment (see point
b) The flame detection electrode has an earth
- Check the correct position of the electrode.
7.2.2 At the end of the pre-ventilation phase,
the ignition electrode does not discharge
and the control equipment locks out within
the safety time.
a) The ignition transformer is malfunctioning.
- Replace the control equipment which contains
b) The ignition electrode is no longer connected
page 21
Screw block with pin
for group 3 gas
equipment is malfunctioning and the initial
self-check does not allow the cycle to conti-
nue.
8.1).
leakage.
The ceramic insulation material may be
cracked and this is difficult to determine
visually. In case of doubt, replace the electrode
(see point 8.6).
the transformer.
to the equipment connector.
Gas unit
Fig. 23