Biasi ADVANCE 15OV, Руководство по обслуживанию, Страница: 10 / 36

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FAULT FINDING
Components to check
Section of the manual

(note ref. in brackets)
– (1)
– (2)
– (3)
14.1
– (4)
5
–
6.5
7
8.4
9.2
10
11.4
12.2
12.2
13.1
– (7)
–
–
–
–
Appliance lock–out (*)
Defect

Power supply line
Gas supply line
Flue pipes
Cond. drain pipe and trap
C.H. circuit
Condensing heat exchanger
External pump
Fuses (Electronic p.c.b.)
Main electronic p.c.b.
Boiler settings
Control panel electr. p.c.b.
Gas valve
C.H. flow temp. probe
C.H. return temp. probe
Fan / air restrictor
Ignition electrode
Detection electrode
Safety thermostat
Gas restrictor
Flue temp. probe NTC
Expansion vessel external
Safety valve external
Pressure gauge external
External temp. probe
Room themostat delayed
No ”Er” indication on display
The boiler does not start. The control panel display OFF Fan still.
•
•
•
•
Incorrect modulation.
•
•
•
•
Noisy boiler
.
•
•
•
•
•
•
•
–
W
ater leaks from
the safety
valve
during operation on C.H.
•
•
•
•
•
–
W
ater leaks from
the safety
valve
when the boiler is of
f.
•
•
•
FAUL
T FINDING
* Lock out is indicated as “
Er
” on the display
.
Note Useful
information
can
be
obtained
also
from
the
optical
indication given by the appliance display (see section 4 .
1)
.
1
Check for 230V~ between line (L) and neutral (N). Verify the integrity of supply cable, plug and external fuses. Check the polarity of line and neutral connection.
2
Check the gas supply pipe and isolation tap for gas tightness.
3
Check
for
soundness
and
absence
of
obstructions.
Verify
that
the
flue
terminal
is
correctly
installed
(see
clearances)
and ensure that exhaust gas is not sucked back by the boiler
.
4
Check for soundness of the circuit and verify its correct fillin
g
(see
also
installation
manual).
5
A jammed by–pass could cause the over–heating of the main circuit and the intervention of the safety thermostat.
6
Using
the
flue
analyser
, check
the
CO
2
value
of
the
flue
gases. This reading
is a reference
value for the gas valve
setting.
7
Check the pressurization of the expansion
vessel.
Refer to the installation manual for proper values.
9
The boiler do
esn’t reach the nominal heat input.