Ferroli Domina 80 E Installation, Service And User Instructions Manual page 57

Check cold water
inlet pressure
Check if water
filter is clean
YES
Go to
chart 4
DHW taps closed
Put CH temperature selector
to maximum
Ensure external controls
are calling for heat
Is led4 " " light on?
YES
Wait 2 minutes
Is led4 " " light off?
NO
Check and if is necessary
replace CH sensor
DOMINA 80 E
Check Domestic Hot Water operation
Open DHW taps
DHW flow rate at
NO
least 2,5 litre/min?
YES
Is led2 " " light on?
YES
Is led4 " " light on?
NO
Is relay 2 switch on?
NO
Check and if necessary
replace limit thermostat
Check Central Heating operation
Does pump run?
NO
YES
Chart 2
NO
YES
Check and if necessary
replace main board
Chart 3
NO
YES
Go to chart 4
Is relay 2
NO
switch on
YES
Go to chart 4
Check and if necessary
replace DHW Sensor
Check and if necessary
replace Flow Sensor
Is relay RY01
switch on
NO
Check and if
necessary replace
main board
Check
limit thermostat
YES
Check and if
necessary
replace pump
57