If one of these cases occurs, pressing one of the
buttons with pre-set the machine does not make
coffee and never stops (obstruction to the limit), or
it can happen that the delivery does not stop or will
not start as planned.
In these cases the machine could signal an error
with a message (e.g. Group doser error 3).
To verify that the fan is effectively locked you can:
1 Check function by measuring the voltage
supplied to the control unit during a delivery.
2 Directly inspect the part.
Moreover, the key pressed with pre-set will remain
lit, while the continuous / stop key will flash to high-
light a malfunction.
Even if the pre-sets do not work, the machine will
always operate in semi-automatic mode using only
the start/stop button until the arrival of the techni-
cian.
Edition 01 of 08/2017
7.11
SERVICE MANUAL
Menu Principale
1.20 bar
°C°C °C °C
Group dose error 3
21 MarzoDomenica 14:45
Menu
Fig. 212
Fig. 213
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