Fer Falcon 47-26701 Installation, Servicing And User Instructions Manual page 35

8.10 General test and fault finding
Check electrical supply - C.H. water pressure and frost protection
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
pressure
switch wiring
connection
Check and if
necessary
replace water
pressure switch
YES
FALCON
D.H.W. taps closed
CH Selector to
Summer " " position
Put main switch to on
Is LED5 on?
YES
Is LED5 flashing?
NO
Does fan run at full speed?
YES
Does CH Pump run? NO
YES
If the boiler temperature
is less than 5°C
frost protection is activated
Disconnect
CH flowtemp sensor
Has fan speed stopped?
NO
Check and if necessary
replace main board
Chart 1
Is 230V present across
NO
terminals X1-1 X1-2?
YES
Check and if necessary
replace 2A fuse
Is LED5 ON now?
YES
NO
Go to CHART 2
Is Relay RY101 switch on?
NO
INDUSTRIE
NO
Repair external
wiring fault
NO
Replace
main board
YES
Check pump
wiring
connection
Check and if
necessary
replace pump
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