Edition 01 of 08/2017
6.6
SERVICE MANUAL
Fig. 157
°C°C °C °C
Boiler sensor error 2 NC
21 MarchSunday 14:45
Fig. 158
The temperature probes of the coffee boilers
have a value of 47-50 KOhm at room tempera-
ture (about 25°) and 4.3 KOhm at about 88°C.
The VA388 is provided with software to detect
possible malfunctions.
HEATER PROBE ERROR
If the following error is displayed:
“Heater probe error X NC”.
SOLUTION
1 Follow the entire route of the probe up to the
data collector and check that the cable is
intact;
2 Replace the probe;
3 Check for any damage to the flat cable that
connects the probe collector to the control
unit.
6.4 TEMPERATURE PROBE
The temperature probes of the coffee boilers
interface with the control unit located on the left
side of the machine through a passive signal col-
lector connected with the control unit via a flat
cable.
In this way you can access the probes more
quickly and independently. Each probe is
equipped with an extension, so you can replace
the probe without accessing the data collector.
G2
To PC
board
To static
relé
G1
G3
C2
C1
C3
Fig. 156
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