Ferroli Falcon Installation, Servicing And User Instructions Manual page 35

Chek the following carefully before starting
• Gas supply is turned on, is adequate and purged
• Electricity supply is turned on
• Polarity is correct
• CH pressure is set between 1 - 1,5 bar
• CH pump spins freely
YES
Water pressure
YES
is not set
between
1 - 1,5 bar?
NO
Set pressure to
1 - 1,5 bar
Check water
Does fan run at full speed?
pressure
switch wiring
connection
Check and if
necessary
replace water
pressure switch
frost protection is activated
YES
D.H.W. taps closed
CH Selector to
Summer " " position
Put main switch to on
Is LED5 on?
YES
Is LED5 flashing?
NO
YES
Does CH Pump run?
YES
If the boiler temperature
is less than 5°C
Disconnect
CH flowtemp sensor
Has fan speed stopped?
NO
Check and if necessary
replace main board
Is 230V present across
NO
terminals X1-1 X1-2?
Check and if necessary
replace 2A fuse
Is LED5 ON now?
NO
Go to CHART 2
NO
Is Relay RY101 switch on?
NO
YES
Repair external
wiring fault
NO
YES
Replace
main board
YES
Check pump
NO
connection
Check and if
necessary
replace pump
wiring