Service manual

T-6
06/2005
Error DESCRIPTION OF ERROR
CODE
CHECKING METHOD Corrective Action
Dollar Bill Validator
bC Bill validator communications - No
bill validator communication for 5
seconds.
If changer or card reader is being
used, check for “CC” or “rC” errors.
If there are no “CC” or “rC” errors:
1) Check bill validator harness; 2)
Replace bill validator. If there is a
“C” or “rC” error: 1) Check control
board MDB harness.
Turn off door switch and wait at least
five seconds. Turn on door switch.
bFUL Bill validator full - reported by
validator (ST
ACKER command).
Insure bill cashbox is empty and that
the cashbox is properly closed and
in place.
If cashbox appears to be OK,
replace bill validator.
biLL Bill validator motor is reported as
defective by validator
.
No test available. Replace bill validator.
bJ Bill jammed -- reported by
validator
.
Check bill validator for obstructions
or dirt.
If no obstructions are apparent,
replace bill validator.
brCH Bill validator check sum is
incorrect.
T
urn power switch off. Wait at least
five seconds. Turn power switch on.
Manually clear the error.
If error does not clear, replace bill
validator.
bOPn Bill validator is open. Check that bill cashbox is closed and
in correct position.
If cashbox appears to be OK,
replace bill validator
.
bS Bill validator sensor is not
functioning.
Check bill validator for obstructions
or dirt.
If no obstructions are apparent,
replace bill validator
.
Card Reader
CrC There is no card reader
communication for 5 seconds.
If card reader/bill acceptor is being
used, check for “rC’
or “bC” errors.
If there is no “rC” or “bC” error:
1) Check changer harness. 2)
Replace changer.
Turn power switch off. Wait at least
five seconds. Turn power switch on.
If there is a “rC” or “bC” error:
3) Check control board MDB
harness.
CrXY Most recent “non-transient error”
from the card reader
.
No test available. Refer to card reader manual for
corrective action.
Refrigeration
SENs 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.
CnPr 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 section
on the following pages.
Check refrigeration settings (refer to
refrigeration section of programming
manual).
Change settings as required.
Htr 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
ds 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.
Ran 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.
ACLO AC voltage to the controller is low
for more than 30 seconds.
Check for low voltage at the wall
outlet at unit start-up.
Contact a qualifi
ed electrician.