64
of
92
TECHNICIANS manual
10.6
Malfunctions and solutions
Problem
Cause
Action
NO MACHINE POWER
•
The main switch is in the "OFF" position.
•
The machine switch is faulty.
•
The mains switch is in the OFF position.
•
The wiring is defective.
•
Turn the main switch to the ON position.
•
Replace the main switch.
•
Turn the mains switch to the ON position.
•
Check for any faulty connections.
NO WATER IN THE HEATING UNIT
•
The water mains tap is shut off.
•
The cut-off tap of the automatic level device is closed.
•
The pump filter is clogged.
•
The motor pump is disconnected or jammed.
•
The water filling solenoid valve is faulty.
•
The water inlet solenoid valve filter is clogged.
•
Open the water mains tap.
•
Open the automatic level device tap.
•
Replace the pump filter.
•
Check the motor pump.
•
Replace the water filling solenoid valve.
•
Clean or replace the solenoid valve filter.
TOO MUCH WATER IN
THE HEATING UNIT
•
The solenoid valve of the automatic level device is faulty.
•
The level probe is out of order (clogged by limescale).
•
Replace the solenoid valve of the automatic level device.
•
Replace the level probe.
WATER LEAKS FROM THE MACHINE
•
The tray is not draining.
•
The drain pipe is broken, has detached, or the water
flow is obstructed.
•
Water is leaking from the hydraulic circuit.
•
Check the sewer drain.
•
Check and restore the drain pipe connection to the tray.
•
Restore the hydraulic seal by replacing the pipe, the
gasket or the fitting as necessary.
WATER LEAKS FROM THE
DISPENSING GROUP
•
The group gasket is worn.
•
Damaged filter.
•
Replace the group gasket.
•
Replace the filter holder filter.
THE DISPLAY INDICATES
NON-CONFORMING PRESSURE
•
The display is faulty.
•
The motor pump has been calibrated incorrectly.
•
Replace the display.
•
Adjust the motor pump calibration.
THE SAFETY VALVE HAS CUT-IN
•
The electronic control unit is faulty.
•
Check that the service heating unit system is work-
ing properly.
NO STEAM RELEASED
FROM NOZZLE
•
The machine is switched off.
•
The electrical heating element is faulty.
•
The temperature probe is faulty.
•
The nozzle sprayer is clogged.
•
The safety thermostat is deactivated or faulty.
•
Turn on the machine.
•
Replace the electrical heating element.
•
Replace the temperature probe.
•
Clean the steam nozzle sprayer.
•
Reactivate the thermostat or replace it.
WATER OR STEAM MIXED WITH WATER
COMES OUT OF THE STEAM NOZZLES
•
The level of the heating unit is too high due to the level
probe being incorrectly positioned inside the heating
unit or the presence of limestone.
•
The heating unit filling solenoid valve is leaking.
•
Check the condition of the level probe: check if it
is positioned correctly and check for any surface
limescale.
•
Clean and replace the filling solenoid valve.
NO COFFEE IS DISPENSING
•
There is no water in the mains.
•
The group solenoid valve is faulty.
•
The pump is jammed.
•
The group solenoid valve is clogged or dirty.
•
The group filter is clogged.
•
The volumetric dosing device is jammed.
•
The inlet and outlet taps of the dosing device are closed.
•
The inlet nozzle of the volumetric dosing device is dirty.
•
Check that there is water in the mains.
•
Replace the group solenoid valve.
•
Replace the pump.
•
Clean or replace the solenoid valve.
•
Clean or replace the filter.
•
Check/replace the dosing device.
•
Open the taps.
•
Clean or replace the nozzle.
THE COFFEE GROUNDS ARE WET
•
The group solenoid valve drain is clogged.
•
The dispensing group is too cold.
•
The coffee has been ground too finely.
•
There's not enough ground coffee.
•
Clean the group drain.
•
Wait until the group has fully heated up.
•
Adjust the coffee grinder.
•
Increase the amount of ground coffee.
GROUNDS FOUND IN CUPS
•
The filter holder is dirty.
•
The filter holes are worn.
•
The coffee has not been ground evenly.
•
The group gasket is worn.
•
The pump pressure is too high.
•
Clean the filter holder.
•
Replace the filter.
•
Replace the grinders.
•
Replace the seal.
•
Adjust the pump pressure.
THE CUP IS DIRTY WITH
COFFEE SPLASHES
•
There are steam pockets in the dispensing system.
•
There are air pockets in the hydraulic circuit.
•
The coffee has been ground too coarsely.
•
Reduce the water temperature.
•
Check the cause and resolve the problem.
•
Adjust the grinder as appropriate.
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