Ferroli Modena 80 E Manuel D’Utilisation
MODENA 80 E
37
Chart 4
Check fan/flue gas system
Does fan run?
Is relay RY100 switch ON?
NO
Go to charts 2-3
NO
Is 230V present across
fan terminals?
YES
Check air pressure
switch wiring connection
NO
Check and if
necessary replace
air pressure switch
NO
Check and if
necessary replace fan
YES
Is air pressure switch
activated?
YES
NO
Check and if
necessary replace
air pressure switch
YES
Differential air pressure
across the air pressure
switch is greater than
180 Pascal?
Go to chart 5
YES
NO
Check and clean fan
Check flue and air
intake are correct
and clean
Check Venturi and
air pressure switch
tubes are clean
Check restrictor
is correct
Chart 5
Check D.H.W. and C.H. modulation
Does burner
flame modulate?
Check wiring connection
to CH sensor
Normal operation
carry out
YES
NO
Check CH sensor
and replace it if necessary
Boiler operated
on central heating mode
Does burner
flame modulate?
Check wiring connection
to DHW sensor
Normal operation
carry out
YES
NO
Check DHW sensor
and replace it if necessary
Boiler operated
on DHW mode