V21 Parts & Service Manual
All V21 Identified Equipment
REV A – 10/2013
P/N: 1230476
Error DESCRIPTION OF ERROR CODE CHECKING METHOD CORRECTIVE ACTION
Bill Acceptor ROM
Bill acceptor check sum is
incorrect.
Unplug service cord. Wait at
least 5 seconds. Plug in service
cord. Manually clear the error.
If error does not clear, replace bill
acceptor.
Bill Acceptor Open Bill acceptor is open.
Check that bill cashbox is closed
and in correct position.
If cashbox appears to be OK, replace
bill acceptor.
Bill Acceptor
Bill acceptor sensor is not
Check bill acceptor for
If no obstructions are apparent,
Card Reader
Card Reader
Communication
There is no card reader
communication for 5 seconds.
If card reader/bill acceptor is
being used, check for “Rom
Checksum” error.
If there is no “Rom Checksum” error:
1) Check changer harness. 2)
Replace card reader.
Unplug service cord. Wait at
least 5 seconds. Plug in service
cord. Manually clear the error.
If there is a “Rom Checksum” error:
Check control board MDB harness.
Card Reader
Most recent “non-transient error”
from the card reader.
No test available.
Refer to card reader manual for
corrective action.
Refrigeration
Temp Sensor
The temperature sensor is
defective or unplugged.
Check to see that temperature
sensor harness is plugged into
door harness at air dam area.
If the sensor is unplugged, replug it.
Check for temperature sensor
connection J7 on control board
is plugged in.
Not Cooling
System has failed to decrease
temperature 1° per hour while
the compressor is running.
Access relay mode (refer to
programming manual).
Refer to the refrigeration
troubleshooting flow chart on the
following pages.
Check refrigeration settings
(refer to refrigeration section of
Change settings as required.
Not Heating
Heater system has failed to
increase temperature 1° per hour
while heater is on.
Heater circuit not properly wired.
Check electrical connections.
Bad sensor on heater circuit. Replace sensor.
Defective heating element. Replace heating element.
Miscellaneous Problems
Door Switch
Door has been open for more
than one hour.
Check the vendor’s door switch
to see if it’s sticking or miswired.
Replace the door switch, if defective.
Ram Error
Ram check sum for service mode
settings stored in non-volatile
memory has been corrupted.
No test available.
If error shows up frequently, replace
the control board.
AC Low
AC voltage to the controller is
less than 20Vrms for more than
30 seconds.
Check for low voltage at the wall
outlet at unit start-up.
Contact a qualified electrician.
Scale
Scaling Factor error - one of the
credit peripherals has introduced
a scaling factor that is not
compatible with the current
configuration.
Check the connections of
changer harness; make sure
changer is plugged in and
working.
Make corrections to harness or
replace the changer if necessary.
Inlet Sensor
Machine's coin inlet sensor is
blocked for more than 1 minute.
Check changer harnessing for
cut, pinched or crimped wires.
Replace harnesses or changer.
V21 Troubleshooting Chameleon / Trade / HV3 | T1-14
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