Ferroli Falcon Installation, Servicing And User Instructions Manual page 37
Copper wall-mounted combination, gas fired boiler for central heating and domestic hot water production, fan assisted, room sealed compartment, electronic flame ignition and control installation, servicing and user instructions
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Is relay RY100 switch ON?
YES
Go to charts 2-3
Is 230V present across
fan terminals?
NO
Check air pressure
switch wiring connection in N.O.
NO
Check and if
necessary replace
air pressure switch
YES
Normal operation
carry out
Does fan run?
NO
NO
YES
Check and if
necessary replace fan
Boiler operated
on central heating mode
Does burner
flame modulate?
NO
Check CH sensor
and replace it if necessary
YES
Is air pressure switch
activated?
NO
Differential air pressure
across the air pressure
switch is greater than
180 Pascal?
NO
Check and clean fan
Check flue and air
intake are correct
and clean
Check Venturi and
air pressure switch
tubes are clean
Check restrictor
is correct
Boiler operated
on DHW mode
Does burner
flame modulate?
NO
Check DHW sensor
and replace it if necessary
YES
Go to chart 5
YES
Check and if
necessary replace
air pressure switch
YES
Normal operation
carry out
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