Necta Canto Plus Espresso - Failure Diagnosis and Resolution; Failure Overview and Readout; Failure Reset and History; Specific Failure Conditions

© by N&W GLOBAL VENDING S.p.A. 42 10 2009 3325 - 00
FAILURES
FAILURES
FAILURE READOUT
FAILURE RESET
FAILURE HISTORY FILE
TECHNICIAN> X.X
The machine is equipped with several sensors intended
to control the various functional units.
As soon as a malfunction is found out, the type of failure
is displayed and the machine (or part of it) is set out of
order.
The failures are stored in special counters. The failures
controlled by the software can be related to functional
units not available on a specic model. However, they
are listed on scrolling the menu.
reading currenT failures
When the display is set to the “Failure” function, press
the Enter key

to display the current failures.
If there is no failure at the moment, press the Enter key

to display the “Failure end” message.
Expected failures are highlit in the following cases:
No water
If the air-break microswitch should remain closed for one
minute, the water inlet solenoid valve will remain ener-
gized while waiting for the water ow to come back.
If the water supply kit from internal tank is mounted on
the machine, the pump is powered o.
Waste container full
Espresso coee based selections are disabled as soon
as you reach the number of used doses the solid waste
tray can contain.
Air-break
The machine stops after 10 selections if the microswitch
has never signalled any lack of water.
No cups
As soon as the no cups microswitch is opened, the cup
stake shift motor is actuated. The machine is put out of
order if the microswitch has not closed after a complete
rotation.
If the machine is complete with an (optional) cup sensor,
the machine will display the “No cups” message.
Use the corresponding function to dene whether the
failure shall lock the machine or let it ready for a cup
sale.
Cup shift arm
The machine stops if the cup shift arm should fail to
reach 1 of the 2 microswitches within the pre-established
time of 15 sec.
Volumetric counter (impeller)
The volumetric counter is not counting within a max.
interval of time (impeller).
Instant boiler
The machine stops if the instant boiler water has not
reached the temperature after having heated for 20
minutes since you powered on the machine or last made
a selection.
Machine board
No communication between the C.P.U. board and the
machine board.
Coin mechanism
The machine stops if it should receive an over 2-sec.
pulse on a validator line or if the communication with the
serial coin mechanism is not longer than 30 seconds
(Executive protocol) or 75 seconds (BDV protocol).
Coee dispenser
Coee-based selections are disabled if the doser micro-
switch should signal the presence of coee in the doser
chamber after having dispensed the dose of ground
products.
Coee unit
It is due to a mechanical lock of the coee unit. The
machine is not locked, but espresso coee-based selec-
tions are disabled.