for the user
Also the opening of the manual venting taps of radiators (intentional or unintentional)
makes the pressure decrease. Check that this doesn’t happen.
— the boiler has an overheating and the Safety Thermostat has triggered;
Turn the SUMMER/WINTER Selector in the central Unlock
Position until the
red lamp turns off (or eventually for a longer period to make the boiler cool), then
bring again the selector in the desired position (Summer
or Winter ). If the
Lock Out takes place again call the Service Centre.
— the burner hasn’t regularly switched on or the flame has suddenly turned off;
incorrect combustion.
Restore the service turning the SUMMER/WINTER selector in the Unlock
Position
until the red lamp turns off. In case of frequent Locks:
• Call a technician to check the combustion and verify that the burner is clean and in
good conditions;
In “SE” models with Sealed Combustion Chamber:
• Check that the Inlet/Outlet Ducts and the respective terminals are clean and in good
condition, and that there are no leaks. During the Installation Process it is necessary
to respect the prescriptions included in the national and local regulations and laws, in
addition to the slopes and measurement included in the paragraphs “Chimney
connections” and “Flue systems”.
Note for the TECHNICIAN: The burner flame is not detected by the Flame Control Unit becouse it has not
turned on or it has suddendly turned off, or it has detached from the burner, because of an incorrect
combustion. This can be due, in exemple, to combustion product reflowing into inlet duct, leaks in inlet/
outlet ducts or errors in sizing of ducts (ducts length above or below the allowed, and/or wrong use of
restrictor on boiler’s outlet).
— “E” models with Natural Draught only: the device which signals the wrong Flue
Outlet has intervened;
Exceptionally the cause can be a strong wind gust. Restore the service turning the
SUMMER/WINTER selector in the Unlock
Position until the red lamp turns off. In
case of frequent Locks:
• Check the efficiency of the Flue.
• Check that the outlet which communicates with the outdoor, compulsory according
to the law, is not obstructed by pieces of furniture against the wall or by other objects.
It is however normal that the outlet is realized behind a radiator. The outlet must be of
the dimension prescribed by the law and must be cleaned inside: some types have
an anti-insects net which could have been dirtied by dust or by spider’s webs. Call a
Qualified Technician when it is necessary.
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CONTROL PANEL
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