Ferroli F24
40
Chart 2
Check Domestic Hot Water operation
Chart 3
Check Central Heating operation
Check and if necessary
replace DHW Sensor
NO
Is LED3 on?
Open DHW taps
DHW flow rate at
least 2,5 litre/min?
Check cold water
inlet pressure
Check and if necessary
replace Flow meter
Is LED4 flashing?
NO
Is relay RY100 switch on?
NO
YES
Check if water
filter is clean
NO
YES
YES
YES
Check and if necessary
replace main board
Check and if necessary
replace limit thermostat
Go to
chart 4
Wait 2 minutes
DHW taps closed
Put CH temperature selector
to maximum
Ensure external controls
are calling for heat
Is LED4 flashing?
Does pump run?
YES
YES
Go to chart 4
Is relay RY101
switch on
Check and if
necessary replace
main board
NO
Is LED4 flashing?
Check and if is necessary
replace CH sensor
YES
NO
Is relay RY100
switch on
NO
YES
Go to chart 4
NO
Check
limit thermostat
YES
Check and if
necessary
replace pump
NO
