Royal Vendors RVV Gen II Operation manual

Royal Vendors, Inc.
RVV Generation II with KO Programming
RVV Gen II
Royal Vendors, Inc. • 426 Industrial Boulevard • Kearneysville WV 25430-2776 • USA
Telephone [phone] • Fax [phone] • [email protected] • [email protected] • www.royalvendors.com
Manufactured by
R
Operation and Service Manual

RVV Gen II KO Service and Parts Manual
2
Royal Vendors, Inc. • 426 Industrial Boulevard • Kearneysville WV 25430-2776 • USA
Customer Service: [phone] or Toll Free 1 [phone] • Fax [phone]
E-mail: [email protected]
[email protected]
Website: www.royalvendors.com

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RVV Gen II KO Service and Parts Manual
SAFETY SEGMENT.........................................................................5
SECTION 1: General Information and Setup ..............................7
Introduction .....................................................................................7
Unpacking the Vender and Installing It On Location ......................7
Voltage Requirements and Vender’s Power Cord ..........................8
Programming the Vender ...............................................................8
Loading the Vender ........................................................................8
Specications .................................................................................9
Important Note on Transporting the RVV NG .................................9
Vender Identication .......................................................................9
SECTION 2: Vender Component Explanation ..........................10
Vender Main Controller (including pinouts) ..................................10
Delivery Mechanism Controller.....................................................13
Touch Pad ....................................................................................14
Delivery Sensor ............................................................................14
Door Switches ..............................................................................14
Vacuum Fluorescent Display (VFD) .............................................14
Electronic Power Supply ..............................................................14
Refrigeration System ....................................................................15
Ballast ...........................................................................................17
Credit Peripherals .........................................................................17
SECTION 3: Vender Programming ........................................... 18
Internal (Service) Menu .............................................................. 19
Error Codes ................................................................................19
Coin Pay Out ..............................................................................21
Tube / Stack Fill ..........................................................................21
Recycler Pay Out .......................................................................21
Test Modes .................................................................................21
Password Entry ..........................................................................25
Cash Counters ...........................................................................25
Sales Counters ...........................................................................25
Card Counters ............................................................................25
Token Counters ..........................................................................25
Free Vend Accounting ................................................................25
Price Program ............................................................................26
StS Programming .......................................................................26
Cong Switches ..........................................................................27
Correct Change ..........................................................................29
Preview Password ......................................................................29
Language Select ........................................................................29
Time Programming .....................................................................30
Lighting Control ..........................................................................31
Refrigeration ...............................................................................32
Select Block 1/2 ..........................................................................34
TABLE OF CONTENTS

RVV Gen II KO Service and Parts Manual
4
Select Discount ..........................................................................35
Over-ride Switch .........................................................................37
Return to Sales ...........................................................................38
External Menu ................................................................................39
Sales Counters ...........................................................................39
Cash Counters ...........................................................................39
Error Codes ................................................................................39
Return to Sales ...........................................................................39
SECTION 4: Vender Maintenance ............................................. 40
What to Clean .............................................................................. 40
Lubrication ................................................................................... 40
Preventive Maintenance .............................................................. 40
RVV NG Product Cup Manual Calibration ....................................41
SECTION 5: Troubleshooting ....................................................42
Troubleshooting by Error Codes ...................................................42
Troubleshooting by Symptom .......................................................45
Test Diagnostics Routines Troubleshooting .................................48
SECTION 6: Parts Catalog ........................................................ 64
Programming Flowchart ..............................................................85
RVV NG Wiring Schematic...........................................................86
CREDIT AND REPLACEMENT POLICY.......................Back Cover
TABLE OF CONTENTS (continued)

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RVV Gen II KO Service and Parts Manual
SAFETY SEGMENT
ROYAL VENDORS’ COMMITMENT TO
SAFETY
Royal Vendors is committed to safety with all of our
product designs. We are committed to notifying the user
of a possible danger involving the improper handling
or maintenance of our venders. The servicing of any
electrical or mechanical device involves potential dangers,
both to those servicing the equipment and to users of
the equipment. These dangers can occur because of
improper maintenance or usage. The purpose of this safety
segment is to alert everyone servicing Royal equipment
of potentially dangerous areas, and to provide basic safety
guidelines for proper upkeep.
The service manual contains various warnings that should
be carefully read to minimize the risk of personal injury.
This manual also contains service information to ensure
that proper methods are followed to avoid damaging
the vender or making it unsafe. It is also important to
understand these warnings provide general guidance only.
Royal could not possibly know, evaluate, or advise of all
of the conceivable ways in which service might be done.
Consequently, Royal cannot predict all of the possible
dangerous results. These outlined safety precautions
are the basis for an effective safety program. Use these
safety measures, along with the service bulletins, helpful
hints and product specication sheets, when installing or
servicing Royal equipment.
We recommend that persons servicing our equipment
maintain a similar commitment to safety. Only personnel
properly trained should have access to the interior of
the vender. This will minimize the potential dangers
that are inherent in electrical and mechanical devices.
Royal has no control over the vender once it leaves the
premises. It is the owner or lessor’s responsibility to
maintain the vender in a safe condition. See installation
insert located in the coin box of a new vender for proper
installation procedures and refer to the service manual
for recommended maintenance procedures. If you have
any questions, please contact the Technical Services
Department at 1.800.931.9214.
SAFETY REGULATIONS
· Read the safety segment before installation or service.
· Test for proper grounding before installing to reduce
the risk of electrical shock and re.
· Turn off or disconnect power cord from wall outlet
before servicing.
· Only fully trained service technicians should service
vender when vender has power.
· Remove any product before moving a vender.
· Use appropriate equipment when moving a vender.
· Always wear eye protection, and protect your hands,
face, and body when working near the refrigeration
system.
· Use only authorized replacement parts.
· Be aware of inherent dangers in rocking or tipping a
vender.
SECTION I: ELECTRICAL HAZARDS
GENERAL ADVICE
Careless or improper handling of electrical circuits can
result in injury or death. Anyone installing, repairing,
loading, opening, or otherwise servicing a vender should
be aware of this precaution. Apply all of the normal
precautions when handling electrical circuits, such as:
· Refrigeration servicing to be performed by qualied
personnel only.
· Unplug the vender before servicing.
· Replace electrical cords if there is any evidence of
fraying or other damage.
· Keep all protective covers and ground wires in place.
· Plug equipment into outlets that are properly grounded
and polarized (where applicable), and protected with
fuses or circuit breakers of the correct size.
· All electrical connections must be dry and free of
moisture before applying power.
WARNING:
ALWAYS TEST TO VERIFYPROPER GROUNDING
PRIOR TO INSTALLATION IN ORDER TO
REDUCE THE RISK OF ELECTRICAL SHOCK
AND FIRE.

RVV Gen II KO Service and Parts Manual
6
SAFETY SEGMENT
SECTION II: ELECTRICAL HAZARDS
A. Servicing with “Power Off”
For maximum safety, unplug the power cord from the wall
outlet before opening the vender door. This will remove
power from the equipment and avoid electrical hazards.
Service personnel should remain aware of possible hazards
from hot components although electrical power is off.
B. Servicing with “Power On”
Some service situations may require access with power on.
Only fully qualied service technicians should perform
power-on servicing. Particular caution is required in
servicing assemblies that combine electrical power and
mechanical movement. Sudden movement (to escape
mechanical action) can result in contact with live circuits
and vice versa. It is therefore important to maintain
maximum clearances from both moving parts and live
circuits when servicing.
WARNINGS:
1. ONLY FULLY TRAINED PERSONNEL SHOULD
ACCOMPLISH “POWER-ON” SERVICING.
SUCH SERVICE BY UNQUALIFIED
INDIVIDUALS CAN BE DANGEROUS.
2. LIGHTING CIRCUITS CAN BE HAZARDOUS.
ALWAYS DISCONNECT VENDER FROM THE
WALL OUTLET BEFORE REPLACING A BULB
OR SERVICING THE VENDER IN THAT AREA.
3. NEVER USE A HOSE, PRESSURE WASHER
OR ANY CLEANING METHOD THAT COULD
WET ELECTRICAL COMPONENTS. SEE
CLEANING SECTION OF MANUAL FOR
SUGGESTED CLEANING METHODS. IF
WATER CONTAMINATION OF ELECTRICAL
COMPONENTS IS SUSPECTED, USE QUALIFIED
ELECTRICAL TESTING EQUIPMENTAND TEST
METHODS TO ASSURE THAT VENDER IS NOT A
HAZARD BEFORE APPLYING POWER FORANY
REASON.
SPECIAL NOTE FOR VENDERS
EMPLOYING R744 (Carbon Dioxide)
REFRIGERATION UNITS
1. The vender must be installed in a well-ventilated area.
Installation in conned spaces must be avoided.
2. Users and / or installers must follow requirements in
the R744 Material Safety Data Sheet (MSDS) and
in the Safety Standard for Refrigeration Systems,
ANSI / ASHRAE 15.

7
RVV Gen II KO Service and Parts Manual
SECTION 1: General Information and Setup
General Information
Introduction
This manual contains installation, operation, and service
instructions for the Royal Vision Vender Generation II,
by Royal Vendors, Inc. This manual also contains a parts
catalog and electrical schematic for the RVV Gen II.
The RVV is a microprocessor-controlled glass-front
vender that permits pricing per selection from $0.00 to
$99.95. The RVV provides electronic space-to-sales
programmability, and it will collect, store, and transfer
MIS data elds to a hand-held computer (HHC) or on-line
device through a DEX port.
Unpacking the Vender and
Installing It On Location
UNWRAP THE VENDER
Unwrap the vender and remove the padding. Check for
any signs of damage. If the vender is damaged, contact
the carrier immediately. They will instruct you on the
procedure for ling a claim.
If the vender is being stored, remove the plastic stretch
wrap, cardboard cover, and styrofoam cushioning rst.
The plastic stretch wrap and styrofoam cushioning can
adhere to the exterior of the vender over an extended
period of time, damaging the vender’s nish.
Note: The vender’s keys are located in the coin cup.
REMOVE THE SHIPPING SKID
Separate (split) each section of the shipping skid by
inserting a claw hammer, crowbar, or similar device into
the slot of each section to break it apart. Tilt the vender
slightly to remove the separated pieces. (See Figure 1.1.)
REMOVE DOOR BLOCK
After opening the vender’s door, locate the wooden
shipping block at the bottom right under the door. Lift the
block straight up to remove it.
Figure 1.1
REMOVE THE INTERIOR PACKING
Before plugging in the vender’s power cord, remove the
interior packing. Failure to remove this packing before
plugging in the vender could result in damage to the vend
mechanisms.
• Remove the packing tape which secures the case
supports.
• Remove the binder clips that secure each of the two
belts, located approximately in the middle of the belts’
runs.
PLACING THE VENDER ON LOCATION
When placing the vender on location, allow for a minimum
of 4” (10 cm) of space at the back of the vender. This will
ensure proper ventilation of the refrigeration system.
To level the vender, close and latch the vender’s door.
Using a spirit level, adjust the four leveling legs until the
top of the vender is level left-to-right and front-to-back.
Make sure all leveling legs are in contact with the oor
(including the support leg - see next paragraph).
ADJUSTING THE SUPPORT LEG
The RVV is equipped with a support leg that is designed
to prevent the vender from tipping. Always ensure that
this leg is extended all the way to ground level. Failure to
do so may result in the vender tipping forward, potentially
resulting in broken bones, dismemberment, or even
death!
The support leg is located under the bottom hinge plate of
the vender’s main door. Using a 1½” (38 mm) wrench,
turn the leg counterclockwise until it is extended to ground
level.
Generation II
VISION VENDER

RVV Gen II KO Service and Parts Manual
8
SECTION 1: General Information and Setup
Voltage Requirements and
Vender’s Power Cord
The vender is designed to operate at a voltage of 115
volts AC, 60 Hertz. It requires the minimum of a 15
amp service, and it should be on a dedicated circuit. The
service outlet voltage must not exceed 129 VAC or fall
below 103 VAC.
The vender has a three-wire grounding cord. The vender
must be plugged into a grounded electrical outlet to
protect customers from electrical shock. If the outlet is not
equipped with a grounded socket, have one installed by a
qualied electrician. Do not use an extension cord, unless
it has been authorized by a certied electrician. Extension
cords are not recommended.
After plugging the vender’s power cord into the AC
voltage source, the following should be observed:
1. The uorescent bulbs will illuminate (if the door is
closed);
2. The refrigeration compressor will start to run after
approximately 5-7 minutes (with the door closed);
3. The evaporator fan will run; and
4. The Vacuum Fluorescent Display will light.
The control board is equipped with a battery back-up for
use in the event of a power loss. The battery is used to
retain important programming information, such as space-
to-sales, prices, etc., so that it will not be erased if power is
lost or the vender is unplugged.
Programming the Vender
All programming of the vender is done in the Service
Mode. To enter the Service Mode, open the vender’s door,
and press and release the Service Mode Button, located on
the controller board. For programming instructions, see
the section entitled “Vender Programming,” later in this
book.
Loading the Vender
Package
Package Loading
20 oz PET
16 oz Glass
16 oz PET
12 oz Can
240 / 250 mL Can
Qty/Col
7
7
8
8
11
Quantities are approximate.
Fig. 1
14 oz PET
8
Fig. 2
Loading Recommendations
Retainer
Front of Cell Lockout Bracket
Pusher
For FIFO (first in, first out) Loading:
1. Press down lockout bracket (right side), lift tray, and pull out slightly.
2. Release lockout bracket and pull tray out to extended position.
3. Use one hand to push package pusher back far enough to load first package
with opposite hand behind existing packages.
4. Use newly loaded bottles to push stack of packages towards rear of selection.
Continue until selection is full.
5. Make sure packages do not extend past tray front (see Figure 1, above).
6. When finished, press down the lockout bracket and return tray to original
position (see Figure 2, above).
For Front Loading:
1. Load package off-center, using bottle to spread open nearest retainer. Then,
rotate bottle slightly towards other retainer and into opening.
2. Continue in same manner until selection is full.
3. Make sure packages do not extend past tray front (see Figure 1, above).
Ensure shelf is flush with slide and
tab fully engaged (both sides).

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RVV Gen II KO Service and Parts Manual
RVV Gen II Specications
Dimensions (280 cap.).................72” H x 39” W x 36.5” D
Approximate Empty Weight ........720 lbs. (327 kg)
Operating Voltage ........................115 VAC, 60 Hz
Amperage Rating.........................9 Amp
Charge..........................................8.0 oz. R134a
Construction.................................Steel cabinet, plastic
cells, glass front
Conguration ...............................40 selections (5 shelves)
IMPORTANT NOTE ON
TRANSPORTING THE RVV
Before transporting the RVV, always ensure that the
protective transport packaging is replaced, including:
• Packing tape to secure the case support;
• Styrofoam block on top of the motor cover, below the
elevator arm;
• Binder clips to secure each belt, placed approximately in
the middle of each belt’s run; and
• Cardboard to protect the glass.
Improper packaging before shipping could cause damage.
SECTION 1: General Information and Setup
Vender Identication
VENDER SERIAL PLATE — The vender’s main serial
plate is located on the exterior left side of the vender’s
main door and has the following information:
• Vender model code
• Vender serial number
• Amps required by the vender
• Unit charge of R134a
• Refrigeration design pressures
The vender’s model code contains useful information:
the machine type, such as RVRVV (Royal Vendors Royal
Vision Vender); the model number, such as 500; and the
number 40, which designates that the vender has forty
cells.
The vender’s serial number contains several important
pieces of information as well. The serial number currently
in use consists of the following:
• The rst four numbers represent the year the vender
was produced;
• The fth and sixth digits represent the week within that
year the vender was produced;
• The rst letter represents the style of the vender;
• The second letter represents the location where the
vender was built; and
• The last ve digits represent the number of that vender
built within that week.
REFRIGERATION SERIAL PLATE: The Refrigeration
Serial Plate is located on the front of the vender’s
refrigeration unit, mounted on the kick plate. It looks
similar to the Vender Serial Plate with the exception that
the model number specied is the refrigeration unit model.
There is currently one model in use:
Model Compressor size Usage
8000V Super 1/3 Horsepower All RVV

RVV Gen II KO Service and Parts Manual
10
SECTION 2: Vender Component Explanation
Vender Component
Explanation
Vender Main Controller
(including pinouts)
The vender’s main control board (VMC) is responsible for
most vender operations. The VMC is the larger of the two
printed circuit boards located in the upper left corner of the
inside of the door. The boards are protected by a cover.
Removing this cover will expose the boards, along with all
wiring connections to the boards.
IDENTIFICATION: The RVV Gen II’s VMC can be
easily identied by a Royal Vendors part number decal on
the capacitor of the VMC board.
OPERATION REQUIREMENTS: The VMC requires
approximately 24 volts DC from the electronic power
supply. This will allow the VMC to function and to supply
power to all the vender’s components listed below.
OPERATION: Upon receiving the appropriate voltage
from the power supply, the VMC issues information
to some components, receives information from some
components, and communicates both ways with some
components.
VENDER MAIN CONTROLLER PINOUTS: The RVV
Gen II VMC has several electrical pinouts, a set-up mode
button, and various other electronic components (all of
which have designated position codes). The following
section outlines all the VMC’s pinouts.
The word key refers to the small plastic insert plugged into
a position of the connector. The purpose of the key is to
prevent connecting the harnessing backward or upside-
down. The “keyed position” is a blank position within the
pinout (no pin) in which a key is inserted. Some pinouts
may have several blank positions with a key plugged
into one or more of the positions. You can use the key to
determine which end of the pinout is Pin 1.
DEX / UCS Connections (Position P1): The RVV Gen
II is equipped with a DEX / UCS jack directly on the
VMC at position J1. It also has pinouts for optional
three (3) wire harnesses leading to internal and external
jacks. The Hand Held Computer (HHC) plugs into these
jacks to read information from the VMC. If the vender
is equipped with these optional jacks and the HHC does
not operate properly with them, check the harnesses for
bad connections at the solder joints. Also check to ensure
that the insulator at the jack is not cracked from over
tightening.
PIN WIRE FUNCTION
NUMBERCOLOR
1 RED VMC RECEIVE / DEX
TRANSMIT DATA (ring)
2 - FUTURE USE
3 BROWN VMC TRANSMIT / DEX
RECEIVE DATA (tip)
4 - KEY
5 BLACK DEX COMMON (sleeve)
6 - FUTURE USE
7 - KEY
8 RED VMC RECEIVE / DEX
TRANSMIT DATA (ring)
9 BROWN VMC TRANSMIT / DEX
RECEIVE DATA (tip)
10 BLACK DEX COMMON (sleeve)

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RVV Gen II KO Service and Parts Manual
SECTION 2: Vender Component Explanation
Standard VFD Display Interface (Position P2): The four-
wire harness connecting to this pinout travels from the
vender’s VFD (Vacuum Fluorescent Display) to the VMC.
It allows the VMC to send power to and communicate with
the VFD. If this harness is cut or disconnected, the VFD
will go blank. If this harness is pinched, you may see
“broken segments” on the VFD with various segments of
the display lit.
PIN WIRE FUNCTION
NUMBERCOLOR
1 RED DISPLAY 5 VDC POWER
2 BLACK DISPLAY CLOCK
3 BROWN DISPLAY DATA
4 ORANGE DISPLAY 5 VDC COMMON
5 - KEY
6 - VUN
7 - MDB TRANSMIT
8 - MDB RECEIVE
Selection Switches (Position P3): The RVV uses a touch
pad, which utilizes a matrix wiring system. Upon pressing
a particular button, a signal circuit is completed. Because
each output wire carries a different signal, the controller
will determine which key has been pressed based on which
input wire receives the output signal.
PIN WIRE FUNCTION
NUMBERCOLOR
1 BLACK ROW 2
2 WHITE ROW 3
3 RED ROW 4
4 - NC
5 - NC
6 - NC
7 - NC
8 - NC
9 - KEY
10 GREEN COL 1
11 BROWN COL 2
12 BLUE COL 3
13 ORANGE COL 4
14 - NOT USED
15 YELLOW +5VDC
16 VIOLET GROUND
Sold Out LEDS (Position P4) and Ready To Vend
Indicators (Position P4A): These pinouts may be
available in the future, but at the time of this printing they
are not available.
24 Volt DC Power In (Position P5): The two (2) wire
harness connecting to this pinout comes from the
electronic power supply. It is imperative the correct
harness be connected to this pinout. If this harness is not
connected (or if power is lost to this connection), you
will noticeably lose all vender functions, including power
to the VFD display. In addition, on venders with the
optional TriTeq door lock, unless the electronic door lock
is equipped with a battery backup, it will not be possible
to open the vender’s main door. The coin mechanism will
not accept coins, and the refrigeration system will not run.
With this connector, the wires can be in either position,
and the control board will not be affected.
PIN WIRE FUNCTION
NUMBERCOLOR
1 - GROUND
2 WHITE 24 VOLTS DC+
3 - KEY
4 BLACK 24 VOLTS DC-
Environmental Controls (Position P6): The wiring
harness connecting to this pinout powers the refrigeration
relay (to power the refrigeration unit). It is also
responsible for powering any optional relays, such as the
refrigeration heater relay, evaporator fan relay, and light
relay. It powers each relay by providing a constant 24
volts DC to each relay from Pin 1. Upon activation, the
control board will remain neutral for each relay from either
Pin 2, 3, 4, or 6.
PIN WIRE FUNCTION
NUMBERCOLOR
1 GREEN 24 VDC
2 HEATER RELAY
3 BLUE COMPRESSOR RELAY
4 GREY EVAPORATOR FAN RELAY
5 - KEY
6 VIOLET FLUORESCENT LIGHT
RELAY
7 - KEY
8 - 24 VDC

RVV Gen II KO Service and Parts Manual
12
Electronic Door Lock and Options (Position P7): This
pinout connects to the standard electronic door lock, as
well as to the optional manual override switch and to the
top and bottom door switches. Pin 1 receives data from
the electronic door lock. This wire should never be cut,
pinched, or spliced if cut. If the harness is cut, pinched,
or grounded out, power will be lost to the electronic door
lock. Entry into the vender will not be possible, unless the
electronic door lock is equipped with an optional battery
backup.
PIN WIRE FUNCTION
NUMBERCOLOR
1 WHITE DATA FROM ELECTRONIC
DOOR LOCK
2 - NOT USED
3 - KEY
4 MANUAL OVERRIDE
5 GROUND
6 - KEY
7 BLACK TOP DOOR SWITCH
8 - COIN SENSOR
9 - 5 VDC
10 BLACK BOTTOM DOOR SWITCH
11 - 24 VDC
12 - KEY
13 - VEND COUNTER
Temperature Sensors (Position P8): The wiring harnesses
connecting to this pinout travel from the temperature
sensor and optional health sensor to the control board. The
temperature sensor is mounted adjacent to the evaporator
fan inlet. These harnesses are molded into the temperature
sensor and health sensor, and they should never be cut,
pinched, or spliced together if cut. If the harness is cut,
pinched, or improperly grounded, the sensor may give the
control board false temperature readings. Refrigeration
activity is based on the signal reported to the control board
from these sensors.
PIN WIRE FUNCTION
NUMBERCOLOR
1 RED TEMP. SENSOR +5 VDC
2 WHITE TEMP. SENSOR SIGNAL
3 - KEY
4 BLACK TEMP. SENSOR GROUND
5 RED HEALTH SENSOR +5 VDC
6 WHITE HEALTH SENSOR SIGNAL
7 - KEY
8 BLACK HEALTH SENSOR GROUND
SECTION 2: Vender Component Explanation
Multi-Drop Bus (Position P9): The ve-wire serial
harness connecting to this pinout provides power and
communications to and from the control board for the coin
mechanism, the optional 24 VDC bill validator, and/or the
optional debit card reader, as well as the electronic door
lock. If this harness is cut, pinched, or disconnected, you
will noticeably lose power to these items. Note: This
harness also connects to the DMC at position P6.
PIN WIRE FUNCTION
NUMBERCOLOR
1 WHITE 24 VDC
2 BROWN RETURN
3 - NOT USED
4 BLACK RECEIVE
5 RED TRANSMIT
6 GREEN COMMON
Vend Motors (Position P10): This pinout is not currently
used.
Port Power (Position P11): The harness connecting to
this pinout should never be cut, pinched, or spliced if cut.
The delivery sensors are located in the port area of the
vender’s main door. The emitter is located below the port;
the receiver is located above the port. Note: This harness
also connects to the DMC at position P4.
PIN WIRE FUNCTION
NUMBERCOLOR
1 RED +5 VDC DELIVERY SENSOR
2 WHITE GROUND DMC LOOP (ORANGE)
3 - NC
4 - +5 VDC
5 BLACK DEL. DOOR SW. GROUND
Delivery Sensor (Position P14) and Parallel Display
(Position P15): These pinouts are not currently used.

13
RVV Gen II KO Service and Parts Manual
SECTION 2: Vender Component Explanation
Delivery Mechanism
Controller (including
pinouts)
The vender’s delivery control board (DMC) is responsible
for delivery operations. The DMC is the smaller of the
two printed circuit boards located in the upper left corner
of the inside of the door. Along with the VMC, the DMC
is protected by a cover. Removing this cover will expose
the boards and all wiring connections to the boards.
Y-Axis (Position P1): The Y-axis is the up and down
movement of the product elevator.
PIN WIRE FUNCTION
NUMBERCOLOR
1 BLACK Y-AXIS ENC GROUND
2 RED Y-AXIS ENC 5 VDC
3 WHITE Y-AXIS ENCODER CHANNEL B
4 GREEN Y-AXIS ENCODER CHANNELA
5 BLACK 5 VDC Y-AXIS HOME SWITCH
6 RED COMMON Y-AXIS HOME SW.
7 - +5 VDC
8 BLACK Y-AXIS PHASE A-
9 - NOT USED
10 RED Y-AXIS PHASE A+
11 - NOT USED
12 GREEN Y-AXIS PHASE B-
13 - NOT USED
14 WHITE Y-AXIS PHASE B+
X-Axis (Position P2): The X-axis is the left and right
movement of the product elevator.
PIN WIRE FUNCTION
NUMBERCOLOR
1 BROWN X-AXIS ENC GROUND
2 YELLOW X-AXIS ENC 5VDC
3 - NOT USED
4 WHITE X-AXIS ENCODER CHANNELA
5 GREEN X-AXIS ENCODER CHANNEL B
6 - GROUND
7 BROWN X-AXIS PHASE B-
8 YELLOW X-AXIS PHASE B+
9 - NOT USED
10 - NOT USED
11 GREEN X-AXIS PHASE A-
12 WHITE X-AXIS PHASE A+
Delivery Cup (Position P3): This harness connects to the
delivery cup assembly board.
PIN WIRE FUNCTION
NUMBERCOLOR
1 BLACK GROUND
2 BROWN PRODUCT DETECT
3 RED TACHOMETER SENSE
4 YELLOW POSITION SENSE
5 GREEN 5 VDC
6 BLUE PLUNGER MOTOR -
7 GREY PLUNGER MOTOR +
8 - NOT USED
9 PINK DRIVE MOTOR +
10 WHITE DRIVE MOTOR -
Port Sensors (Position P4): The harness connecting to
this pinout should never be cut, pinched, or spliced if cut.
The delivery sensors are located in the port area of the
vender’s main door. The emitter is located below the port;
the receiver is located above the port. Note: This harness
also connects to the VMC at position P11.
PIN WIRE FUNCTION
NUMBERCOLOR
1 - +5 VDC
2 RED PORT DETECT
3 BLACK DELIVERY DOOR SWITCH
4 BROWN GROUND
5 - NOT USED
6 ORANGE GROUND VMC LOOP (WHITE)
Multi-Drop Bus (Position P6): The ve-wire serial
harness connecting to this pinout provides power and
communications to and from the VMC and DMC for the
coin mechanism, the optional 24 VDC bill validator, and/
or the optional debit card reader, as well as the electronic
door lock. If this harness is cut, pinched, or disconnected,
you will noticeably lose power to these items. Note: This
harness also connects to the VMC at position P9.
PIN WIRE FUNCTION
NUMBERCOLOR
1 WHITE 24 VDC
2 BROWN RETURN
3 - KEY
4 BLACK RECEIVE
5 RED TRANSMIT
6 GREEN COMMON

RVV Gen II KO Service and Parts Manual
14
Touch Pad
The 12-button touch pad is located on the right side of
the door front. The touch pad contains the numbers 0-9,
plus the * key and the # key. All programming and sales
selections are done by way of the touch pad.
Delivery Sensor
The delivery sensor actually consists of two separate
components which work in conjunction with one another.
The emitter, below the product delivery port, emits an
infrared beam. The receiver, above the delivery port,
receives the infrared beam. When a product falls into the
delivery port, the infrared beam is broken, signalling to the
DMC board that a vend has been made.
Door Switches
There are two door switches mounted on the door’s
chassis. The door switches are actuated by the door each
time it is opened or closed. The following functions are
performed each time the vender door is closed:
1. All sold-out selections are cleared;
2. The greeting scrolls on the display;
3. If door switch reset is enabled in programming, the
resettable MIS counters will be reset if at least one
selection has been read;
4. A 5-7 minute delay begins after which the refrigeration
unit will come on; and
5. The door lights will turn on.
Vacuum Fluorescent
Display (VFD)
The VFD, a two-line, 20-character per line display,
is located above the validator. All information to the
programmer and to the customer is conveyed on the VFD.
SECTION 2: Vender Component Explanation
Electronic Power Supply
The Royal Vision Vender Generation II uses an electronic
power supply which converts 115 volts AC (conventional
voltage) to 24 volts DC, to power the vender’s control
board. The electronic power supply is a major contributor
to the vender’s operation. Without it, the control board
cannot function.
LOCATION OF ELECTRONIC POWER SUPPLY: The
power supply is located in the bottom of the vender’s door.
It is contained in a metal tray which also holds the light
ballast and the fusebox assembly. To remove this metal
tray, remove the screw from each end of the tray with a
Phillips screwdriver. WARNING: Before removing this
tray, remove power from the vender by unplugging the
main power cord from the AC voltage source (wall outlet)!
CHECK THE POWER SUPPLYAND FUSE: If upon
arriving at the vender the display is not lit, the coin
changer does not take coins or payout coins, and the door
lights are not lit, make sure the vender is plugged in. Next,
check the external 3-amp fuse for visual damage. Check
for continuity across the fuse with a voltage meter or
similar device. If defective, replace the external fuse.
1. Check the power going into the power supply at the
connected red and black wires. It should register 115
volts AC. If not, check all wiring leading up to this
point from the bottom of the vender’s door. The power
supply may not be the problem. There may be a broken
wire or bad connection.
2. If 115 volts is registered in Step 1, measure voltage
coming out of the power supply. The two-pin
connector at the VMC connected to position P5 should
register approximately 24 volts DC. If so, check the
control board; the power supply is good.
3. If 115 volts is registered in Step 1 and 24 volts is
NOT registered in Step 2, the electronic power supply
is probably bad. Unplug the vender, and unplug the
connections at the power supply (115-volt and 24-
volt side). Remove the power supply from the door.
Replace it with a new electronic power supply.

15
RVV Gen II KO Service and Parts Manual
SECTION 2: Vender Component Explanation
Refrigeration System
The vender’s refrigeration system is responsible for the
cooling of the cabinet and the products loaded within it.
The refrigeration system comes as a completely sealed unit
and should never be cut or tapped into, or the warranty
will be voided.
OPERATION REQUIREMENTS
The refrigeration system requires 115 volts AC from
the main wiring harness for it to operate. The main
wiring harness will get its voltage for the unit from the
refrigeration relay.
COOLING SOFTWARE FEATURES
The RVV Gen II controller software includes the following
refrigeration modes and features:
• Normal Mode (Energy Saving): When the main door
is closed and switches are made, the controller counts
the number of refrigeration cycles. When this number
equals a stored counter, the refrigeration unit converts
from a pull-down mode, in which the evaporator fan
runs continuously, to a normal mode, in which the
evaporator fan runs only when the compressor is on.
This process normally takes about 24 hours after the
door is shut, with a complete product reload in a 75°F
(24°C) ambient environment.
• Defrost Mode: The defrost feature is a 30-minute
period in which the compressor is shut off and the
evaporator fan is allowed to run. The defrost feature is
initiated by a timer. The factory setting is three hours,
but this setting may be adjusted in the service menu.
If the unit is already in the defrost mode when the
door is opened, the defrost function will continue after
the door is closed. Because of that, the compressor
may not restart for as much as 30 minutes after the
door is closed.
• Door Switch Inactivation Mode: If the door switch
does not activate, the uorescent lights will stay off
and the refrigeration unit will not run until 30 minutes
have passed. After 30 minutes, the controller will
assume that the switch may be defective and will then
start the cooling process. In this mode, the evaporator
fan will cycle with the refrigeration unit (similar to
Normal Mode, but without the counter).
• Compressor Motor Save Mode: If the controller
calls for cooling continuously for 24 hours, the
vender will go into a defrost mode for one hour. If
the refrigeration unit still does not cycle after an
additional eight hours, a no pull-down error will be
displayed. Note: This no pull-down error is not
self-clearing; it must be cleared manually through the
service menu or through DEX.
HEALTH SENSOR OPERATION
The rising temperature in the cooling compartment is
reported to the VMC board by the temperature sensor.
At power up, the VMC will check for the temperature.
If the temperature is above 41°F (5°C), the vender will
display “Out of Order.” Once the “Health Safety Failed”
error has been cleared, a 30-minute timer will begin. At
the end of this 30 minutes, the vender will stay in normal
operating mode as long as the temperature remains 41°F
(5°C) or below. If the vender is 41°F (5°C) or below at
power up, the vender will stay in normal operating mode.
If the door is open after power up and the temperature is
41°F (5°C) or below and stays at 41°F (5°C) or below, a
30-minute timer will start after the door is closed. If the
temperature is above 41°F (5°C) after 30 minutes, the
vender will display “Out of Order.” Any time the vender
is in a normal operating mode and the temperature reaches
above 41°F (5°C), a 15-minute timer will start. If after 15
minutes the temperature remains above 41°F (5°C), the
vender will display “Out of Order.”
REFRIGERATION COMPONENTS
The refrigeration system is a sealed system. Described in
this section are explanations of the refrigeration system’s
major components.
Compressor - The compressor is a hermetically-sealed
unit located beneath (outside) the cooling compartment.
The compressor is a pump, driven by the compressor
motor which draws low-pressure vapor (refrigerant) from
the evaporator coil, compresses it, and forces it into the
condenser under high pressure. The motor is started and
controlled by the refrigeration relay.
Condenser - The condenser is located beneath (outside)
the cooling compartment next to the compressor. It can
be seen from the front with the door open. The condenser
removes heat from the high-pressure vapor discharged
from the compressor and condenses it to a high-pressure
liquid. The condenser and evaporator coils have aluminum
ns attached to effectively increase heat exchange
surfaces.

RVV Gen II KO Service and Parts Manual
16
SECTION 2: Vender Component Explanation
Starting Relay - The starting relay is mounted on the side
of the compressor housing. The compressor motor has
two windings (start winding and run winding). To give the
motor torque when it rst starts, the starting relay switches
in the additional start winding. After the motor gets up
to speed, the relay opens the start winding and the motor
continues using only the run winding.
Thermal Overload - The thermal overload is a heat-
sensitive device mounted on the side of the compressor
housing. If the compressor motor gets too hot or draws
an excessive amount of current, the thermal overload
will open, breaking the circuit to the compressor. After
the compressor cools to a safe operating temperature, the
thermal overload will close, allowing the compressor and
condenser fan motors to restart.
Condenser Fan and Motor - The condenser fan and motor,
located beneath the cooling department, are a forced-air
device using outside ambient air to cool the surface of the
condenser coil. The condenser fan and motor run while
the compressor operates.
Evaporator Coil - The evaporator coil is located in the
cooling compartment. As low pressure liquid passes
through the evaporator coil, it absorbs and removes
heat from the compartment as it changes to vapor. The
condenser and evaporator coil have aluminum ns attached
to effectively increase their heat exchange surfaces.
Evaporator Fan and Motor - The evaporator fan and motor
are a forced-air device circulating air throughout the
cooling compartment and over the heat exchange surface
of the evaporator coil.
Expansion Valve - The expansion valve is located in the
refrigerant line between the condenser and evaporator coils.
The expansion valve is used as a metering device to control
the ow of liquid refrigerant to the evaporator coil. This
creates a low pressure causing the refrigerant to vaporize
and absorb heat as it passses through the evaporator.
Drier - The drier is located in the refrigerant line between
the capillary tube and condenser. It traps and removes
moisture from the refrigeration system while allowing oil
and refrigerant to pass through the system.
Accumulator - The accumulator is located in the
refrigerant line between the evaporator coil and the
compressor. The accumulator traps any liquid refrigerant
which did not vaporize before it reaches the compressor.
Refrigeration Relay - The refrigeration relay is located in
the lower left section of the vender’s cabinet near the main
wiring harness. The refrigeration relay is responsible for
powering the compressor and condenser fan motors. The
refrigeration relay consists of a coil powered by the control
board (24 VDC) and a switch. When the control board
completes the circuit to the refrigeration relay, the relay
will energize, closing the contact between the common and
the normally-open positions. When this happens, power
(115 VAC) travels from the refrigeration relay to the main
wiring harness for the refrigeration unit.
REFRIGERATION CYCLE
1. The rising temperature in the cooling compartment is
reported to the control board through the temperature
sensor.
2. The control board registers
the current temperature inside the
vender’s cabinet. When it rises equal
to or above the pre-programmed
cut-in temperature, the control board
will complete the circuit to the
refrigeration relay to energize its coil.
3. The refrigeration relay coil closes
the contact between the common
and normally-open positions,
allowing 115 volts to travel to the
main wiring harness to start the
compressor.
4. The compressor circulates
refrigerant throughout the system
by pulling low-pressure refrigerant
vapor from the evaporator coil,
compressing it, and forcing it into
the condenser. The condenser,
aided by the condenser fan
COMPRESSOR
Discharge
Suction
Condensor
Fan Motor
Evaporator
Fan Motor
CONDENSOREVAPORATOR
Drier
REFRIGERATION SYSTEM
Legend
Direction of
Refrigerant
Flow
Accumulator
Expansion
Valve
Figure 2.1
Refrigeration System Flow

17
RVV Gen II KO Service and Parts Manual
SECTION 2: Vender Component Explanation
motor, removes heat from the refrigerant as it ows
through the condenser and releases it to the outside
environment. The dropping of the refrigerant
temperature changes the vapor to liquid.
5. The evaporator coil allows the liquid refrigerant
to absorb heat from the cooling compartment as it
evaporates in the coil.
6. The falling temperature in the cooling compartment
is caused by the continual circulation of refrigerant
through the system, removing heat from the cooling
compartment and transporting it to the outside
environment. When the temperature drops, the
temperature sensor reports this to the vender’s control
board.
7. When the temperature drops below the preset cut-
out temperature, the control board will disable
the refrigeration relay, thus killing power to the
refrigeration unit.
TESTING THE REFRIGERATION SYSTEM
1. The sealed refrigeration unit can be tested by
unplugging it from the top of the main wiring harness
and plugging it directly into a power source. If the
unit still does not operate, a problem exists within the
sealed unit.
2. If the sealed unit runs when plugged into an external
power source, the problem more than likely lies
between the control board, the refrigeration relay, and
the main wiring harness.
WARNING
ELECTROCUTION HAZARD
When plugging the refrigeration unit directly into
a wall outlet or other external electrical source,
the refrigeration unit MUST remain in the vender
for proper grounding. If the unit is removed from
the vender, an electrocution hazard exists.
Ballast
The ballast acts as a transformer to convert conventional
voltage (115 VAC) to a higher voltage required to energize
the vender’s uorescent lights (upwards of 600 VAC).
The ballast is located in a metal tray in the bottom of the
vender’s door, along with the electronic power supply and
the fusebox assembly. To remove this metal tray, remove
the screw from each end of the metal tray with a Phillips
screwdriver.
WARNING: Before removing the
ballast tray, remove power from the
vender by unplugging the main power
cord from theAC voltage source (wall
outlet)!
Credit Peripherals
There are three possible credit peripherals for the RVV
Gen II: the coin changer, bill acceptor, and debit card
reader. The coin changer determines the validity and value
of each coin that is inserted into the vender and sends
the coin information to the vender controller. The coin
changer also continuously informs the vender controller
if coins are available in the change tubes to be used for
change payout. The bill acceptor determines the validity
and value of each bill that is inserted and sends that
information to the vender controller. The debit card reader
allows customers to purchase a product using a debit or
credit card. For detailed information on any of the credit
peripherals, refer to the separate operation and service
manual provided by the peripheral’s manufacturer.

RVV Gen II KO Service and Parts Manual
18
SECTION 3: Vender Programming
Vender Programming
PRECAUTIONS TO TAKE WHEN
WORKING WITH CONTROL BOARD
As with any printed circuit board, our electronics are
very sensitive to Electrostatic Discharge (ESD). Simply
walking across a tile or carpeted oor can generate a range
of 30,000 to 50,000 volts of electricity. One ESD can be
enough to seriously damage your control board or at least
weaken it enough that erratic problems could occur in the
future. Even a discharge surge under 100 to 200 volts
is enough to create problems within the circuitry of the
electronics. It is advised when storing the electronics that
they be kept in anti-static bags, even if the electronics are
thought to be defective. If a control board is thought to
be defective and is really not, it soon will be after being
charged with ESD. The ideal prevention against ESD is
to use anti-static conductive wrist straps which ground
you to the machine before touching the electronic boards.
If it is not possible to use these, at least ground yourself
before handling the electronic boards by touching the
metal framework of the vender. Whatever method you
use, always handle the electronic boards by the edges. Be
careful not to touch the components on the control board.
TOUCH PAD PROGRAMMING
It is very important that the RVV Gen II is programmed
properly. All programming of the vender options is done
in the Service Mode. To enter the Service Mode, open the
vender door, and press and release the blue mode button
located on the control board.
The vender’s touch pad consists of 12 buttons. Five of
these buttons (see Figure 3.1, below left) are used to
program the vender and navigate through the service
routines, plus two are used to move the elevator cup (in
“Product Location”), as follows:
Button Meaning Usage
2 FORWARD Increase, next, up
4 LEFT Move elevator cup left
6 RIGHT Move elevator cup right
8 BACKWARD Decrease, previous, down
0 CLEAR Clear errors
* EXIT Escape, cancel, exit
# ENTER OK, accept, save
The controller will automatically return to the Sales Mode
if:
• No response from the touch pad is received for
approximately ve minutes;
• The service mode button is pressed a second time;
• The “Return” mode is activated (with door open); or
• The door is actually closed.
If credit exists, the credit amount will be displayed after
returning to the Sales Mode.
MENU SYSTEM
When programming, you must rst use the programming
buttons listed above to maneuver through menus and sub-
menus before you will be allowed to accomplish your task.
Each menu consists of various items, or modes, such as
“Set Prices” Mode or the “Set Time / Date” Mode. There
are two menus:
1. INTERNAL (Service) MENU - This menu is available
only with the vender’s door open. It is accessed upon
pressing the control board’s mode button.
2. EXTERNAL MENU - This menu is available by
entering the proper external password with the
vender’s door closed. (See “Preview Password” in the
following section.) From this menu, cash / sales counts
and vender errors can be read (but not cleared).
Note: Programming owchart located in rear of manual.
1
2
3
456
7
8
9
EXIT
0
#
ENTER
*
CLEAR
Figure 3.1
Touch Pad

19
RVV Gen II KO Service and Parts Manual
SECTION 3: Vender Programming
Internal (Service)
Menu
Error Codes
If <enter> is pressed at the “Error Codes” prompt, the
controller will enter the error display mode. If no errors
have occurred since the last error reset, the display will
show “None.” If an error has been detected since the last
error reset, the display will show the rst summary error
code that has occurred, such as “Vend Mechanism,” which
would indicate a vend error. Pressing <up> or <down>
will allow you to cycle through all of the summary error
codes that are present. Pressing <enter> at the displayed
summary error code will allow you to view the detailed
error codes beneath the summary error heading (see
below). Pressing <up> or <down> at this point will
allow you to cycle through all of the detailed error codes
that are present beneath the summary error code. If the
<exit> button is pressed anytime during this operation, the
controller will return to the “Error Codes” prompt. Press the
<up> button to proceed to the next prompt, “Coin Pay Out.”
If the <clear> button is pressed during the display of any
detailed error code, that error will be cleared. If other
errors exist that fall under the currently accessed detail
type, the next error would be displayed. If no other errors
of the current type exist, the next error summary code
will be displayed, or “None” will be displayed if no other
errors exist.
The error summary codes and their corresponding detailed
error codes are as follows:
• Control System
By pressing <enter> at the “Control System” prompt,
the controller will display:
1. “Door Switch,” indicating the door switch has
been open for more than an hour;
2. “RAM Checksum,” indicating the machine setup
information has been corrupted;
3. “DC Under Voltage,” indicating that the average
rectied voltage was under 20VDC for more than
30 seconds;
4. “DC Over Voltage,” indicating that the average
rectied voltage was over 45VDC for more than
30 seconds;
5. “System Scale Factor,” indicating one of the
credit peripherals has introduced an incompatible
scaling factor;
6. “Inlet Sense,” indicating the machine’s coin inlet
sensor has been blocked for more than a minute
(note: this is an optional component not installed
on all venders); or
7. “Inlet Blocked,” indicating two coins were
sensed at the inlet sensor but didn’t make it to the
changer within 10 seconds.
After taking corrective action to manually x the
“Control System” errors, the errors may be cleared
electronically via a hand held device or through the
service mode using the <clear> button.
• Selection Switch
By pressing <enter> at the “Selection Switch” prompt,
the controller will display “Selection Switch XX,”
where “XX” indicates the rst selection switch that
has been determined to be closed for more than 15
seconds. If there is a selection key error, navigation of
the service menu will not be possible. This error can
only be cleared by manually correcting or replacing
the keypad.
• Changer
By pressing <enter> at the “Changer” prompt, the
controller will display either:
1. “Changer Comm,” indicating no changer
communications for more than 2 seconds;
2. “Tube Sense,” indicating a tube sensor error;
3. “Changer Inlet,” indicating no coins sensed by
acceptor for over 96 hours:
4. “Tube Jam XX,” indicating a tube jam error for
coin type XX;
5. “Changer ROM,” indicating a changer ROM
checksum error;
6. “Excessive Escrow” indicating more than 255
escrow attempts since the last coin was accepted;
7. “Coin Jam,” indicating a coin jam;
8. “Low Acceptance,” indicating a low acceptance
rate (more than 20% of the last 255 coins were
slugs);
9. “Disconnected Acceptor,” indicating an
unplugged acceptor; or
10. “Misrouted Coin,” indicating a coin had been
improperly routed.
The “Changer Comm” error will be cleared when
proper communications are re-established. After
taking corrective action to manually x the other
“Changer” problems, the errors may be cleared
electronically via a hand held device or through the
service mode using the <clear> button.

RVV Gen II KO Service and Parts Manual
20
SECTION 3: Vender Programming
• Bill Validator
By pressing <enter> at the “Bill Validator” prompt,
the controller will display either:
1. “Bill Val Comm,” indicating no bill validator
communications for more than 5 seconds;
2. “Bill Stacker Full,” indicating a full bill stacker;
3. “Bill Motor,” indicating a defective motor;
4. “Bill Jam,” indicating an bill jam error;
5. “Bill Val ROM,” indicating a bill acceptor ROM
check sum error;
6. “Open Cash Box,” indicating an open cash box;
or
7. “Bill Sensor,” indicating a bill sensor error.
The “Bill Val Comm” error will be cleared when
proper communications are re-established. After
taking corrective action to manually x the other
“Bill Validator” problems, the errors may be cleared
electronically via a hand held device or through the
service mode using the <clear> button.
• Card Reader
By pressing <enter> at the “Card Reader” prompt, the
controller will display either:
1. “Card Reader Comm,” indicating no card reader
communications for more than 5 seconds; or
2. “Card Reader Error XY,” indicating that a
particular type of card reader malfunction
occurred where “XY” indicates the error type.
The “Card Reader Comm” error will be cleared when
proper communications are re-established. The “Card
Reader Error XY” errors may be reset via the hand
held device or through the service mode using the
<clear> button.
• Vend Mechanism
By pressing <enter> at the “Vend Mechanism”
prompt, the controller will display either:
1. “Delivery System,” indicating that there is a
generic vend mechanism error;
2. “Cup Sensor,” indicating that the cup sensor has
malfunctioned;
3. “Home Sensor,” indicating that the DMC home
sensor has malfunctioned;
4. “Critical Mech,” indicating a critical vend
mechanism error has occurred;
5. “USD Comm,” indicating that the Universal
Satellite Device (i.e., the DMC) is no longer
online;
6. “Delivery Port Sense,” indicating that the DMC is
reporting a port sense error; or
7. “Delivery Port Door,” indicating that the DMC is
reporting a port door error.
After taking corrective action to manually x the
“Vend Mechanism” errors, the errors may be cleared
electronically via a hand held device or through the
service mode using the <clear> button.
• Space to Sales
By pressing <enter> at the “Space to Sales” prompt,
the controller will display “Unassigned Cell XX,”
indicating that cell XX is unassigned. These errors
are cleared when new space to sales programming
resolves the errors or via the service mode using the
<clear> button. (Note: When an unassigned cell is
selected in the sales mode, the display will show “No
Sales Available.”)
• Refrigeration
By pressing <enter> at the “Refrigeration” prompt, the
controller will display either:
1. “Temperature Sensor,” indicating an unplugged
temperature sensor error;
2. “Too Cold,” indicating temperatures 3º F (1.5º C)
below the compressor cut-out setting;
3. “Too Hot,” indicating temperatures 3º F(1.5º C)
above the compressor cut-in setting;
4. “Compressor,” indicating that the compressor
is not cooling at 1º F (0.5º C) per hour or better
while on;
5. “Heater,” indicating that the heating system is not
heating at 1º F (0.5º C) per hour or better while
on;
6. “No Pulldown,” indicating an inability to reach
the set point temperature; or
7. “Health Safety Failed,” indicating that the health
safety limit temperature has been violated.
The “Temperature Sensor” error will be cleared if
the sensor is detected. The “Too Cold” error will be
cleared when the temperature rises above the cut-
out limit. The “Too Hot” error will be cleared when
the temperature falls below the cut-in limit. The
“Compressor” error will be cleared when the system
cools at 1º F (0.5º C) per hour or better. The “Heater”
error will be cleared when the system heats at 1º F
(0.5º C) per hour or better. The “Pulldown” error must
be manually cleared electronically via a hand held
device or through the service mode using the <clear>
button. All other “Refrigeration” errors can also be
cleared via the hand held device or through service
mode using the <clear> button.