Vollrath Stoelting F231, Service Manual, Page: 52 / 63

Service Manual #513659 44 Model F231
ERROR CODE 5 - FREEZING CYLINDER SENSOR
The Freezing Cylinder Sensor Error (E5) indicates
a failure of the barrel sensor or if the sensor is
out of range. If the control panel displays an E5,
press the On/Off button for the cylinder to turn it off
then back on. If the control panel still displays the
error code, refer to the machine's wiring diagram
and the Temperature Sensor Chart (Figure 7-1).
Check each lead of the sensor to ground for
continuity. If continuity is found, replace the sensor.
To check the resistance of the sensor, place a
thermocouple on the suction line at the exit of
the freezing cylinder. Compare temperature and
sensor resistance with the table as reference. If
measured value does not coincide with a value
on the table (± 500 ohms), replace the sensor.
NOTE
When the machine encounters a Freezing Cylinder
Sensor Error, the machine will continue to run using
preset timers. This mode will allow the operator to
continue serving product until the machine can be
serviced.
ERROR CODE 6 - HOPPER SENSOR
The Hopper Sensor Error (E6) will not occur on
the F231.
ERROR CODE 7 - DRIVE MOTOR
If the control panel displays a Drive Motor Error
(E7), the control does not sense the drive motor.
Press the On/Off button for the cylinder to turn
it off then back on. If the error returns, use the
machine's wiring diagram and check connections
at the IntelliTec control and at the motor. An E7
may also be the result of a faulty drive motor
contactor.
ERROR CODE 8 - CAB SENSOR
A Cab Sensor Error (E8) will not occur on the
F231.
ERROR CODE 9 - HIGH PRESSURE CUTOUT
High Pressure Cutout Errors (E9) are usually
caused by a dirty or inef
fi cient condenser. If the
control panel displays an E9, press the On/Off
button for the cylinder to turn it off. Wait for 8-10
minutes for the machine pressures stabilize and
an the internal timer to expire then press the On/
Off button for the cylinder to turn it back on.
In air cooled condenser models, check the air
fi lter to make sure it is clean. Replace or clean the
fi lter as required. Check for proper air clearance
around the machine. Refer to the machine's
Owner's Manual for clearances. Check the
condenser for blockage, and be sure condenser
fan is functioning.
On water cooled condenser models, check for
proper water
fl ow through the condenser coil.
After the cause of the error is determined and
corrected, press the On/Off button for the cylinder
to turn it off then back on.
ERROR CODE 10 - AMBIENT SENSOR
The Ambient Temperature Sensor Error (E10)
indicates a failure of the condenser air inlet
temperature sensor or if the sensor is out of
range. If the control panel displays an E10, press
the On/Off button for the cylinder to turn it off
then back on. If the control panel still displays
the error condition code, refer to the machine's
wiring diagram and the Temperature Sensor Chart
(Figure 7-1). Check each lead of the sensor to
ground for continuity. If continuity is found, replace
the sensor. To check the resistance of the sensor,
place a thermocouple on the suction line at the
exit of the freezing cylinder. Compare temperature
and sensor resistance with the table as reference.
If measured value does not coincide with a value
on the table (± 400 ohms), replace the sensor.
Figure 7-1 Temperature Sensor Resistance
(10K Ohms)
°F Resistance °F Resistance
-22 176950 40 26100
-20 165200 42 24725
-18 154300 44 23400
-16 144200 46 22175
-14 134825 48 21000
-12 126125 50 19900
-10 118050 52 18875
-8 110550 54 17900
-6 103550 56 17000
-4 97075 58 16125
-2 91025 60 15325
0 85400 62 14550
2 80150 64 13825
4 75275 66 13150
6 70725 68 12500
8 66475 70 11875
10 62500 72 11300
12 58800 74 10750
14 55325 76 10250
16 52100 78 9750
18 49075 80 9300
20 46250 82 8850
22 43600 84 8450
24 41125 86 8050
26 38800 88 7675
28 36625 90 7325
30 34575 92 7000
32 32675 94 6675
34 30875 96 6375
36 29175 98 6100
38 27600 100 5825