Vollrath Stoelting E131-OT2, Service Manual

Page: 47 / 61

41
SECTION 7
TROUBLESHOOTING
7.1 ERROR CODES
When the machine experiences a problem, one of the
following error codes will be displayed on the control panel.
Each error code directs you to the system location of the
malfunction.
ERROR CODE MALFUNCTION
1 Soft
2 High Torque
3 Run Time
4 Clean
5 Freezing Cylinder Sensor
6 Hopper Sensor (single hopper machines)
7 Drive Motor
8 Cab Sensor
9 High Pressure Cutout
10 Auxiliary Sensor
11 Low Temperature
12 Left Hopper Sensor
13 Right Hopper Sensor
To return the machine to normal operation, any error
causing condition must be corrected and the Freezing
Cylinder Off-On switch must be placed in the Off position
and back in the On position before the affected side of the
machine will return to normal operation.
7.2 TROUBLESHOOTING
Error Code 1 - Soft Error
The Soft Error (E1) is an internal control board error
that is logged for future analysis. The refrigeration
is never stopped and the machine will continue to
operate normally.
Error Code 2 - High Torque
If the control panel displays a High Torque Error
(E2), the controller has sensed that the drive motor
is running at 125% of the preset CutOut amp
setting for 10 or more seconds. Very low and/or
fluctuating supply voltages typically cause this
error. The error can also be caused by faulty motor
or starting components which could produce a
high amp draw.
Error Code 3 - Run Time
The Run Time Error (E3) occurs when the
compressor runs continuously for 20 minutes
without the product reaching consistency in "Serve
Mode" or if the product does not reach proper
temperature in “Sleep 2 Mode”. This error is generally
caused by very low mix levels in the hopper or from
product breakdown. Another common cause results
from a restriction preventing mix from entering the
freezing cylinder. Check the mix in the hopper. If
the level mix is low, add mix. If there is a possibility
that the mix is broken down, clean and sanitize the
machine and replace the mix with fresh product.
Ice crystals in the hopper can clog the mix inlet
regulator and prevent mix from entering the freezing
cylinder. Thoroughly thaw mix per manufacturer's
recommendations. To check for ice crystals, pour
a small amount of product in the mix container
through a clean and sanitized sieve or strainer. If
ice crystals are in the mix, check the temperature
where the mix is stored. If the hopper temperature
is below 34°F (1°C), adjust the temperature from
the left control touchpad, under the Storage Menu
(Refer to Section 4.7).
The Run Time Error may also occur if airflow within
the machine has reduced or stopped. Check the
sides and top of the machine for anything that
would restrict airflow. Check the condenser filter
and clean if necessary. Check the evaporator for
frost that could restrict airflow.
The compressor will run continuously if a solenoid
valve fails to open. This could be due to loose
wiring, magnetic coil failure, a stuck valve or a
faulty control board.
After the cause of the problem is found and
remedied place the Freezing Cylinder Off-On switch
in the Off position and back in the On position.
Error Code 4 - Clean
If the machine is left in the Clean Mode for more
than 20 minutes, the control panel will display a
Clean Error (E4). This condition does not reflect a
problem with the machine itself. The Clean Error
has been programmed into the controller as a
safeguard to protect the machine from potential
damage caused by the machine being accidentally
left in "Clean Mode". The control will attempt to
restart itself after 5 minutes. The display will then
flash and read Restart. To clear the Clean Error,
turn the Freezing Cylinder Off-On switch Off and
back On. After restarting the machine, a refrigeration
cycle will begin. This protects the product in case
the clean button was pressed by mistake.
https://appliancetechmanuals.com