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Drum not turning Broken or damaged drum. Inspect the drum and drum socket for damage, verify the drum
motor shaft turns with the hopper and drum removed. Replace
drum.
Unable to make a load size
selection, calibration has been
lost.
Reset Dispenser parameters (defaults) using the Parameter
function in the Clear Functions section of the Service Menu, then
calibrate the dispenser. See manual for calibration instructions.
Drum motor or controller has
failed.
Verify power is present at the motor. Use the Drum parameter in
the Test Outputs section of the Service menu to manually
operate the drum motor. Refer to the Service menu section of the
equipment manual. If power is present at the drum motor,
replace the drum motor. If not, replace the controller after
verifying connections.
Unable to calibrate Error message has not been
cleared.
Press the OK button.
Accumulator door assembly
movement is being restricted.
Verify the accumulator door shaft collars are pushed all the way
to the back of the cabinet.
Check for fries interfering with the accumulator door shafts.
Check for frost buildup. Defrost daily.
Weighing system fault.
Use the Scale Readout function
in the Service Menu to help
diagnose the weighing system.
Verify magnet block is secure and no foreign object is attached to
the magnet.
Verify cabling in the back is not resting on or interfering with the
movement of the weighing system.
Check behind the accumulator mechanism for any foreign object
which may be restricting movement of the assembly.
The Scale Readout function displays the live units used to
calibrate weight, the live calibrated weight, and the tare settings.
Weight readings are in grams or pounds. With the accumulator
housing in place the Live Calibrated Weight should reflect the
actual weight on the accumulator doors.
With the accumulator housing in place, readings between 2.5V
and 3.5V are considered normal with about 1V increase for each
1 lb. (454 g) of weight added to the accumulator doors. These
numbers are approximate.
If the live readout is 0.0V or no change in voltage when weight is
added, check and clean the connections on the NCWS board
(weighing board). Check the connection on the main board and
check for restrictions in accumulator assembly movement. If all is
correct, replace the NCWS board.
(Rare) The main controller may be at fault.
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