Astoria 2GR - 6.11 Programming the DISPLAY version machine parameters

TECHNICIANS' manual
54 of 108
Problem Cause Action
SAE version:
COFFEE IS BEING DISPENSED
INCORRECTLY
THE COFFEE DOSE IS NOT
CORRECT
THE DOSE BUTTON LED IS
FLASHING
• The volumetric dosing device connection is
faulty.
• The electronic control unit connection is faulty.
• The volumetric dosing device connector is wet.
• The volumetric dosing device is faulty: the LED
does not ash during the dispensing process.
• The coffee has been ground too nely: there
isn't enough water ow in the dosing device.
• The non-return valve is losing pressure (the
dose is too small).
• The expansion valves are losing pressure (the
dose is too small).
• Water is leaking from the group solenoid valve
when coffee is being dispensed or when in
standby.
• The volumetric dosing device is partially ob-
structed.
• Check that the volumetric dosing device con-
nector has been connected properly.
• Check that the connector (8/10 poles) has
been connected correctly to the electronic
control unit.
• Remove the volumetric dosing device connec-
tor and thoroughly dry the contacts.
• Replace the heads of the volumetric dosing
device or replace the whole dosing device.
• Suitably adjust the grind and check the grind-
ers, if necessary.
• Check and replace the non-return valve, if nec-
essary.
• Check and replace the expansion valves, if
necessary.
• Clean and replace the solenoid valve, if necessary.
• Clean or replace the volumetric dosing device.
SAE version:
THE LEDS OF ALL THE
PUSHBUTTON PANELS ARE
FLASHING
AEP version:
THE FRONT LED IS FLASHING
• The water stops being automatically lled af-
ter a few minutes.
• The timeout device has cut in.
• There is no water in the mains.
• The automatic level device valve is closed.
• Some of the hoses in the circuit are clogged.
• The probe and/or the mass are disconnected.
• Turn the machine off and then back on.
• Open the water mains valve.
• Open the automatic level device valve.
• Check and replace the faulty hoses.
• Check and restore the connections.
UNEVEN AMOUNTS OF MILK
ARE DISPENSING FROM THE
CAPPUCCINO MAKER
• The milk has run out.
• The milk injector is clogged.
• The cappuccino maker is clogged.
• The suction hose is clogged.
• The silicone tube is detached.
• Rell the milk.
• Clean the milk injector.
• Clean the cappuccino maker with the brush.
• Clean the milk suction hose.
• Connect the hose correctly.
THERE ARE AIR POCKETS IN
THE MILK FROTH FROM THE
CAPPUCCINO MAKER
• The air regulator is open too much.
• The air suction hose is disconnected from the cap-
puccino maker.
• Properly calibrate the air regulator.
• Restore the connection via the hose.
THE PUMP WORKS ONLY WITH THE
MANUAL DISPENSING BUTTON
• The pump fuse of the electronic control unit
is burned out.
• Replace the pump fuse of the electronic con-
trol unit (10A).
COFFEE IS BEING DISPENSED
INCORRECTLY
THE COFFEE DOSE IS NOT
CORRECT
• The volumetric dosing device connection is faulty.
• The electronic control unit connection is faulty.
• The volumetric dosing device connector is wet.
• The volumetric dosing device is faulty: during
dispensing the dosing device LED does not ash.
• The coffee has been ground too nely: not
enough water is owing into the dosing de-
vice.
• Water leakage from the group solenoid valve
during coffee dispensing or when in stand-by.
• The volumetric dosing device is partially ob-
structed.
• Check that the volumetric dosing device con-
nector has been connected properly.
• Check for proper connection of the elec-
tronic control unit connector.
• Remove the volumetric dosing device con-
nector and thoroughly dry the contacts.
• Replace the heads of the volumetric dosing
device or replace the whole dosing device.
• Suitably adjust the grind and check the
grinders, if necessary.
• Clean and replace the solenoid valve, if necessary.
• Clean or replace the volumetric dosing de-
vice.
BUBBLES IN THE MILK FROTH
• The air regulator is open too much.
• The air suction hose is disconnected from
the cappuccino maker.
• The frothed milk is too hot.
• Properly calibrate the air regulator.
• Restore the connection via the hose.
• Reduce the temperature of the frothed milk,
increase the speed of the milk pump.