Nuova Simonelli PRONTOBAR - Page 135

DISPLAY CAUSA EFFECT SOLUTION
SEE
PAR.
TOO MUCH
COFFEE
The group can
not close the
brewing cham-
ber with the
upper piston.
(the maximum
absorption of
the motor is
reached before
the group-
encoder has
done the num-
ber of impulse
set).
Coffee will not
be delivered and an
ejection cycle will
be effected.
t Check if the upper
piston enters free
in the brewing
chamber when it
goes up.
t Lubricate the
group
t Reduce the quan-
tity of grinded cof-
fee reducing grind-
ing time.
t Change the motor
ALARM BOILER
FILLING
The boiler fill-
ing stage has
exceeded the 90
seconds maxi-
mum
time; the level
probe is
uncovered.
The machine will
stop. (during first
installation, when
the boilers are
empty, this alarm
can appear twice).
t Switch OFF and
ON the machine;
t Check the auto-
matic level sole-
noid valve, clean
the level probe in
the steam boiler
and check its con-
nection.
ALARM COFFEE
TEMP
The coffee boiler
temperature
probe is broken.
The machine func-
tions
are blocked.
Check the connection
of the coffee boiler
temperature probe or
change it.
ALARM STEAM
TEMP
The steam boiler
temperature
probe is broken.
The steam boiler
temperature probe
is broken.
Check the connection
of the steam boiler
temperature probe or
change it.
ALARM GROUP
TEMP
The group tem-
perature probe
is broken.
The machine func-
tions are blocked.
Check the connection
of the group tempera-
ture probe or change
it.
PLEASE CLEAN
One of the set
cleaning alarms
programmed
has reached
the set value
with WASHING
BLOCK active.
The machine func-
tions are blocked.
Operate the washing
cycle.
14.3
SERVICE MANUAL
Edition 02 to 02/2014