Noticed
Press
wrong boiler
Water
pressure.
Boiler
temperature
Feeler
feeler
Water
signaling
error.
Feeler
Exhaust feeler
exhaust
signaling error
Fume
Hot
temperature
exhaust
too high
Boiler water
Hot
temperature
Water
too high
A black-out
has happened
Black-Out
during the
regular
working.
EXAMPLES OF APPLIANCE/PLANT CONNECTION (Mod. 540 VT–540N VT)
The following connection diagrams are only indications of some connection
possibilities and should not be considered as satisfaction in matter of installations.
Wrong pressure of thermal
plant.
Too high pressure
Electrical connections
interrupted.
Pressure switch control
breakdown.
Wrong appliance
carburation.
Change fuel.
Fume feeler
Wrong appliance
carburation
Breakdown/block
circulation plant pump.
Air inside the boiler.
Fume feeler.
68/140
IT IT IT IT- - - - GB
GB- - - - FR
FR- - - - ES
ES mod. 540 VT – 540N VT
GB
GB
FR
FR
ES
ES
Verify thermal plant pressure.
(min. 0,5bar max. 2bar).
Reduce the pressure of the plant by
draining water.
Verify the electrical connections of
pressure switch.
Verify/replace pressure switch
control.
Verify/replace temperature feeler.
Verify/replace exhaust feeler.
Verification of appliance by a
technical service center.
Proceed with "Pellet Correct".
Verification of appliance by a
technical service center.
Utilize better quality of pellet .
Proceed with "Pellet Correct".
Verify fume feeler position.
Verify/replace fume feeler.
Verification of appliance by a
technical service center.
Proceed with "Pellet Correct".
Verify circulation pump working
Eliminate air from the thermal plant
Verify boiler feeler position.
Verify/replace boiler feeler.
Empty and clean the burner basket
and then proceed with the lighting
phase.