Sime Format 25, Installer'S Instructions

Page: 93 / 100

selector to the desired function.
ATTENTION:
After about 15 minutes, or once the hot
water request has been fulfilled, the
chimney sweep function automatically
deactivates.
4.8 FAULT FINDING
The burner does not light up and the cir-
culator functions.
– Check that the water pressure is on a
value of 1 - 1.2 bar.
– The water pressure switch is faulty and
needs to be replaced.
The main burner does not start either in
the hot water or heating drawing.
– Check and eventually replace the water
pressure switch.
– If the smoke stat has intercepted, then
reinstate it.
– Check that the coils of the gas valve are
receiving electricity, check the functio-
ning and eventually replace it.
– Check the functioning of the limit stat of
the smoke pressure switch (vers. “BF” ).
– The fan works but at a reduced number
of turns and not activating the smoke
manostat, it is necessary to replace it
(vers. “BF” ).
– Replace the electronic board.
The boiler starts up but after 10 seconds
it blocks.
– Check that in the electrical connection
the positions of phase and neutral have
been respected.
– The ignition/detection electrode is faulty;
it must be replaced.
– Replace the electronic board.
The gas valve does not modulate in hea-
ting and hot water phases.
– The sensor is interrupted, it needs to be
replaced.
– The winding of the modulator is interrup-
ted.
– Check that the electricity to the modula-
tor is in compliance with the specifica-
tions.
– Substitute the panel as it is faulty.
In the exchanger of the boiler there are
noises and sparking.
– Check that the circulator is not blocked,
eventually unblock it.
– Remove impurities and sediment that
have accumulated around the rotor of
the circulator.
– The circulator is burnt or the number of
turns is less than that foreseen; it must
be replaced.
– Check that the power to the boiler is
adequate to the actual necessities of the
heating system.
The safety valve of the boiler frequently
intercepts.
– Check that the filling cock is closed. If it
does not close perfectly then replace it.
– Check that the filling pressure when the
system is cold is not too high, keep to
the given values.
– Check whether the safety valve is calibra-
ted, eventually replace it.
– Check whether the capacity of the tank
is enough to hold the quantity of water of
the system.
– Check the pre-loading pressure of the
expansion vessel.
– Replace the expansion vessel if faulty.
The radiators do not heat up in winter.
– The rotary switch is in the summer posi-
tion, put it on the winter position.
– The room stat is regulated too low or
needs to be replaced as it is faulty.
– The electrical connections of the room
stat are not correct.
The principal burner burns badly: flames
too high, yellow flames.
– Check that the gas pressure to the bur-
ner is normal.
– Check that the burners are clean.
– Check that the coaxial duct is correctly
installed (vers. “BF” ).
Smell of combusted gas
– Check that the boiler is perfectly clean.
– Check that the suction is sufficient.
– Check that there is not an excessive.
The boiler is functioning but the tempera-
ture is not increasing.
– Check that the consumption of gas is not
below that foreseen.
– Check that the boiler is clean.
– Check that the boiler is proportional to
the system.
In the “BF” versions on request for hot
water or heating the fan does not start.
– Make sure that the smoke pressure
switch is functioning and that the relative
contact is in rest conditions.
– Check and if necessary remove impuri-
ties or condensation from the connec-
ting tubes of the smoke pressure switch.
– It is necessary to replace the smoke
pressure switch.
– Replace the electronic board.
93
IT
ES
PT
GB
SPIA LAMPEGGIANTE
VERDE/ARANCIO
Fig. 34
FLASHING
GREEN/ORANGE LED