45
RVV Gen II KO Service and Parts Manual
SECTION 5: Troubleshooting
Error Type
Detailed Error Code
Test Procedure
Corrective Action
Refrigeration
(continued
from previous
page)
Too Cold - Indicates a
temperature 10° F (5.5° C)
below the compressor cut-
out setting.
(continued from previous
page)
3. Make sure the vender’s door
switches are working properly.
2. Check Set Point settings.
4. Unplug the green wire
plugged into the refrigeration
relay.
3. Check the green and blue wires
for shorts from the control board.
4.If upon unplugging the green wire
the unit still runs, unplug one of the
two white wires. If the unit stops,
replace the refrigeration relay. If
optional heater relay kit is not
installed, one may be required.
5. If heater kit is installed and heater
does not turn on (heater relay does
not click upon energizing in heater
relay test mode), check the two
white wires from the board to the
heater relay for 24 VDC. Check the
other wire for continuity between
the control board and the relay. If
voltage is okay, replace the relay;
otherwise, replace control board.
Too Hot - Indicates a temperature
10° F (5.5° C) above the
compressor cut-in setting.
Proceed with normal
refrigeration troubleshooting.
Compressor - Indicates that the
cooling system is not heating at
1° F (0.5° C) per hour or better
while on.
Heater - Indicates that the cooling
system is not heating at 1° F (0.5°
C) per hour or better while on.
No Pulldown - Indicates an
inability to reach the set point
temperature.
Health Safety Failed - Indicates
that the health safety temperature
has been violated.
Error / Problem
Test Procedure / Possible
Cause
Corrective Action
Vender does not power up after
door is closed.
Make sure there are no obstructions
holding the door open.
Check to make sure the case holder is
folded and placed correctly, and remove
any obstructions.
Open the door and manually close both
door switches.
If the unit does not power up, check to
make sure the door switch harness is
connected properly to the VMC board. If
it is, then replace the switches. If the unit
still does not power up, replace the switch
harness.
Make sure the vender is plugged in and
that the fuse in the vender is not blown.
Door cannot close completely.
Make sure there are no obstructions
holding the door open.
Check to make sure the case holder is
folded and placed correctly, and remove
any obstructions.
Troubleshooting by Symptom