Ferroli F24 Installation, Service And User Instructions Manual page 40
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
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Check cold water
inlet pressure
Check if water
filter is clean
Go to
chart 4
DHW taps closed
Put CH temperature selector
to maximum
Ensure external controls
are calling for heat
Is LED4 flashing?
YES
Wait 2 minutes
Is LED4 flashing?
YES
Check and if is necessary
replace CH sensor
40
Check Domestic Hot Water operation
Open DHW taps
DHW flow rate at
NO
least 2,5 litre/min?
YES
Is LED3 on?
YES
Is LED4 flashing?
NO
Is relay RY100 switch on?
YES
NO
Check and if necessary
replace limit thermostat
Check Centra Heatin operation
NO
NO
Chart 2
NO
YES
Check and if necessary
replace main board
Chart
Does pump run?
NO
YES
Go to chart 4
Is relay RY100
NO
switch on
YES
Go to chart 4
Check and if necessary
replace DHW Sensor
Check and if necessary
replace Flow Sensor
Is relay RY101
switch on
NO
Check and if
necessary replace
main board
Check
limit thermostat
YES
Check and if
necessary
replace pump
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