Sime Format 25/60 OF Manual De Instrucciones página 93

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.
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