KitchenAid 2003 M Technical Education

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TECHNICAL EDUCATION

KAR-15

BUILT-IN SIDE-BY-SIDE

REFRIGERATOR WITH VARIABLE

CAPACITY COMPRESSOR

2003 M MODEL

JOB AID 4317344

FORWARD

This KitchenAid Job Aid, “2003 M Model Built-In Side-By-Side Refrigerator With Variable Capacity Compressor” (Part No. 4317344), provides the technician with information on the installation, operation, and service of the Built-In Side-By-Side Refrigerator. It is to be used as a training Job Aid and Service Manual. For specific information on the model being serviced, refer to the “Use and Care Guide,” or “Tech Sheet” provided with the refrigerator.

The Wiring Diagrams and Strip Circuits used in this Job Aid are typical and should be used for training purposes only. Always use the Wiring Diagram supplied with the product when servicing the unit.

GOALS AND OBJECTIVES

The goal of this Job Aid is to provide detailed information that will enable the service technician to properly diagnose malfunctions and repair the Built-In Side-By-Side Refrigerator.

The objectives of this Job Aid are to:

• Understand and follow proper safety precautions.

• Successfully troubleshoot and diagnose malfunctions.

• Successfully perform necessary repairs.

• Successfully return the refrigerator to its proper operational status.

WHIRLPOOL CORPORATION assumes no responsibility for any repairs made on our products by anyone other than Authorized Service Technicians.

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TABLE OF CONTENTS

Page

GENERAL............................................................................................................................... 1-1

Safety First......................................................................................................................... 1-1

Model & Serial Number Designations ................................................................................ 1-3

Model & Serial Number Label And Tech Sheet Locations................................................. 1-4

KitchenAid Built-In Refrigerator Warranty .......................................................................... 1-5

INSTALLATION INFORMATION ........................................................................................... 2-1

THEORY OF OPERATION ..................................................................................................... 3-1

COMPONENT ACCESS ......................................................................................................... 4-1

Component Locations ........................................................................................................ 4-1

Removing A Door Switch And The Power Switch ............................................................. 4-2

Removing The Inverter Assembly...................................................................................... 4-4

Removing The Condenser Fan Motor ............................................................................... 4-6

Removing The Ice Maker Inlet Heated Fill Tube ............................................................... 4-8

Removing The Main Control Board Assembly ................................................................... 4-9

Removing The Electronic Meat Pan Power Supply Board .............................................. 4-10

Removing The Compressor And Filter/Drier.................................................................... 4-12

Removing The Bimetal, The Evaporator Fan Motor,

The Defrost Heater, And The Evaporator ..................................................................... 4-14

Removing The Touch And Display Boards & The Motorized Air Door ............................ 4-18

Removing The Meat Pan Air Baffle & Thermistor, The Air Supply

Thermistor, And The Meat Pan Electronic Touch Control Assembly.......................... 4-20

Removing A Thermistor ................................................................................................... 4-23

Removing The Ice Maker, The Emitter, And The Receiver ............................................. 4-24

Removing The Auger Motor............................................................................................. 4-26

Removing The Water Reservoir And Water Valve .......................................................... 4-28

Removing A Light Socket ................................................................................................ 4-30

Removing The Water & Ice Dispenser ............................................................................ 4-31

Removing A Door ............................................................................................................ 4-34

COMPONENT TESTING ........................................................................................................ 5-1

Thermistor.......................................................................................................................... 5-1

Evaporator Fan Motor ........................................................................................................ 5-2

Condenser Fan Motor ........................................................................................................ 5-2

Compressor & Inverter....................................................................................................... 5-3

Motorized Air Door ............................................................................................................. 5-4

Defrost Heater & Bimetal ................................................................................................... 5-4

Main Control Board ............................................................................................................ 5-5

Power Switch ..................................................................................................................... 5-6

Door Switch ....................................................................................................................... 5-6

Air Supply Thermistor ........................................................................................................ 5-7

Water Valve Solenoid ........................................................................................................ 5-7

Checking The Auger Motor ................................................................................................ 5-8

Ice Maker Inlet Heated Fill Tube ...................................................................................... 5-10

Meat Pan Air Baffle Motor And Thermistor ...................................................................... 5-10

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Page

DIAGNOSTICS & TROUBLESHOOTING .............................................................................. 6-1

Diagnostics ........................................................................................................................ 6-1

Pre-Diagnostics Checks ................................................................................................. 6-1

Diagnostics Mode ........................................................................................................... 6-1

Service Diagnostics Mode Chart .................................................................................... 6-2

Water Filter Input (WFI) Test .......................................................................................... 6-2

Electronic Temperature-Controlled Meat Pan Diagnostics ............................................. 6-3

Troubleshooting Chart ....................................................................................................... 6-4

WIRING DIAGRAMS & STRIP CIRCUITS ............................................................................. 7-1

SXS Non Dispenser Wiring Diagram ................................................................................. 7-1

SXS Dispenser Wiring Diagram......................................................................................... 7-2

Bottom Mount Wiring Diagram........................................................................................... 7-3

Main Control Board Block Diagram ................................................................................... 7-4

Electronic Temperature-Controlled Meat Pan Diagram ..................................................... 7-5

SXS Tubing Joint Diagram ................................................................................................ 7-6

Bottom Mount Tubing Joint Diagram ................................................................................. 7-7

Strip Circuits ...................................................................................................................... 7-8

TECH TIPS ............................................................................................................................. 8-1

Servicing The Ice Bin Auger Assembly.............................................................................. 8-1

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GENERAL

SAFETY FIRST

Your safety and the safety of others is very important.

We have provided many important safety messages in this Job Aid and on the appliance. Always read and obey all safety messages.

This is the safety alert symbol. This symbol alerts you to hazards that can kill or hurt you and others. All safety messages will follow the safety alert symbol and either the word “DANGER” or “WARNING.” These words mean:

You can be killed or seriously injured if you don’t immediately follow instructions.

You can be killed or seriously injured if you don’t follow instructions.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can happen if the instructions are not followed.

ELECTRICAL POWER SUPPLY & GROUNDING REQUIREMENTS

Electrical Shock Hazard Disconnect power before servicing.

Replace all parts and panels before operating.

Failure to do so can result in death or electrical shock.

Electrical Shock Hazard

Plug into a grounded 3-prong outlet.

Do not remove ground prong.

Do not use an adapter.

Do not use an extension cord.

Failure to follow these instructions can result in death, fire, or electrical shock.

1-1

Electrical Shock Hazard

ELECTROSTATIC DISCHARGE (ESD) SENSITIVE ELECTRONICS

ESD problems are present everywhere. ESD may damage or weaken the electronic control assembly. The new control assembly may appear to work well after repair is finished, but failure may occur at a later date due to ESD stress.

Connect green ground wire to ground screw.

Failure to do so can result in death or electrical shock.

ANTI-TIP REQUIREMENTS

Tip Over Hazard

Refrigerator is top heavy and tips easily when not completely installed.

Keep doors taped closed until refrigerator is completely installed.

• Use an antistatic wrist strap. Connect the wrist strap to a green ground connection point or unpainted metal in the appliance; or touch your finger repeatedly to a green ground connection point or unpainted metal in the appliance.

• Before removing the part from its package, touch the antistatic bag to a green ground connection point or unpainted metal in the appliance.

• Avoid touching electronic parts or terminal contacts. Handle the electronic control assembly by the edges only.

• When repackaging the failed electronic control assembly in an antistatic bag, observe the above instructions.

Use two or more people to move and install refrigerator.

Failure do so can result in death or serious injury.

1-2

MODEL & SERIAL NUMBER DESIGNATIONS

MODEL NUMBER

MODEL NUMBER K SS S 4 2 Q M X 0 0

PRODUCT GROUP

K = KitchenAid Brand

PRODUCT IDENTIFICATION

BR = Bottom Mount Right Hand Hinge

BL = Bottom Mount Left Hand Hinge

SS = Side-By-Side Built-In

MERCHANDISING SCHEME/SERIES

C = Wrap Around Stainless Steel

P = Factory Installed Panel Kit

S = Framed Trim Kit (Panels Not Included)

V = VBL Pro Line Series

CAPACITY/ SIZE

36 = 36″ Width

42 = 42″ Width

48 = 48″ Width

FEATURES

D = Ice & Water Dispensing

F = Factory Installed Ice Maker w/Filter

M = Factory Installed Ice Maker wo/Filter

Q = Ice/Crushed Ice & Water Dispensing w/Filter

YEAR OF INTRODUCTION

M = 2003

COLOR CODE

S = Stainless

M = Meteorite

X = No Color Used

ENERGY POWER CONSUMPTION CHANGE

0 = Original, 1 = 1st Change, 2 = 2nd Change, Etc.

ENGINEERING CHANGE (NUMERIC)

0 = Original, 1 = 1st Change, 2 = 2nd Change, Etc.

SERIAL NUMBER

SERIAL NUMBER Q P 30 10003

MANUFACTURING SITE

Q = LaVergne, TN

YEAR OF PRODUCTION

P = 2003

WEEK OF PRODUCTION

30th WEEK

PRODUCT SEQUENCE NUMBER

1-3

MODEL & SERIAL NUMBER LABEL

AND TECH SHEET LOCATIONS

The Model/Serial Number Label and Tech Sheet locations are shown below.

Model & Serial Number Location (Refrigerator Compartment)

Tech Sheet Location

(On Unit Compartment Cover)

1-4

KITCHENAID® BUILT-IN REFRIGERATOR WARRANTY

TWO-YEAR FULL WARRANTY

For two years from the date of purchase, when this refrigerator (excluding the water filter cartridges) is operated and maintained according to instructions attached to or furnished with the product, KitchenAid will pay for factory specified replacement parts and repair labor costs to correct defects in materials or workmanship. Service must be provided by a KitchenAid designated service company.

Water filter cartridge: 30 day limited warranty on water filter. For 30 days from the date of purchase, when this filter is operated and maintained according to instructions attached to or furnished with the product, KitchenAid will pay for replacement parts to correct defects in materials and workmanship.

THIRD THROUGH SIXTH YEAR FULL WARRANTY ON SEALED REFRIGERATION SYSTEM PARTS AS LISTED

In the third through sixth years from the date of purchase, when this refrigerator is operated and maintained according to instructions attached to or furnished with the product, KitchenAid will pay for factory specified replacement parts and repair labor costs to correct defects in materials or workmanship in the sealed refrigeration system. These parts are: compressor, evaporator, condenser, dryer, and connecting tubing. Service must be performed by a KitchenAid designated service company.

SEVENTH THROUGH TWELFTH YEAR LIMITED WARRANTY ON SEALED REFRIGERATION SYSTEM

In the seventh through twelfth years from date of purchase, when this refrigerator is operated and maintained according to instructions attached to or furnished with the product, KitchenAid will pay for factory specified replacement parts to correct defects in materials or workmanship in the sealed refrigeration system. These parts are: compressor, evaporator, condenser, dryer, and connecting tubing.

LIFETIME LIMITED WARRANTY ON DOOR BINS

For the life of the product, when this refrigerator is operated and maintained according to instructions attached to or furnished with the product, KitchenAid will replace all Door Bins due to defective materials or workmanship.

KitchenAid will not pay for:

1. Service calls to correct the installation of your refrigerator, to instruct you how to use your refrigerator, to replace house fuses or correct house wiring or plumbing, to replace light bulbs, or to replace water filters other than as noted above.

2. Repairs when your refrigerator is used in other than normal, single-family household use.

3. Pickup and delivery. Your refrigerator is designed to be repaired in the home.

4. Damage resulting from accident, alteration, misuse, abuse, fire, flood, improper installation, acts of God, or use of products not approved by KitchenAid, or KitchenAid Canada.

5. Any food or medicine loss due to product failure.

6. Repairs to parts or systems resulting from unauthorized modifications made to the appliance.

7. Removal and replacement of trim or decorative panels that interfere with servicing the product.

8. Labor or parts installed by any non-designated service company during the full warranty period, unless approved by KitchenAid before service is performed.

9. In Canada, travel or transportation expenses for customers who reside in remote areas.

10. Any labor costs during the limited warranty periods.

KITCHENAID AND KITCHENAID CANADA SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Some states or provinces do not allow the exclusion or limitation of incidental or consequential damages, so this exclusion or limitation may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state-to-state, or province-to-province.

Outside the 50 United States and Canada, a different warranty may apply. Contact your authorized KitchenAid dealer to determine if another warranty applies.

If you need service, first see the “Troubleshooting” section of the Use and Care Guide. After checking “Troubleshooting,” additional help can be found by checking the “Assistance or Service” section, or by calling the KitchenAid Customer Interaction Center, 1-800-422-1230 (toll-free), from anywhere in the U.S.A. In Canada, contact your designated KitchenAid Canada service company, or call 1-800-807-6777.

1-5

— NOTES —

1-6

INSTALLATION INFORMATION

831/

(211 cm)

(see chart following)

Width of Refrigerator

36" (91 cm) 42

(106 cm)

(122 cm)

36-1/4

(92 cm)

42-1/4

(107 cm)

48-1/4

(123 cm)

Model Width A (as shown above)

PRODUCT DIMENSIONS

Side View

831/8"

(211 cm)*

251/8"

(64 cm)

231/2"

(60 cm)

24" (61 cm) Power Cord

Front View

NOTE: (*) Dimensions shown are for leg levelers extended 1/8″ (3 mm) below the rollers. For levelers fully extended 1-1/4″ (32 mm) below the rollers, add 1-1/8″ (29 mm) to this dimension.

Top View

Model Width A

36" (91 cm) 42

(106 cm)

(122 cm)

/2" (9 cm)*

1. 25-1/8" (64 cm) dimension is to front of top grille

2. Power cord (24") (61 cm)

3. 5 ft. (1.5 m) water line tubing taped to back

25-1/8"

(64 cm)

(89 cm)

(104 cm)

(119 cm)

NOTE: The width dimensions shown represent the distance from outside trim to outside trim.

2-1

Opening Dimensions

(

)

Model

Width A (as shown above)

36 in. (91.4 cm) 42 in. (106.7 cm) 48 in. (121.9 cm)

35-1/2 in. (90.2 cm) 41-1/2 in. (105.4 cm) 47-1/2 in. (120.7 cm)

The solid soffit must be within 1″ (2.5 cm) maximum above the refrigerator. If the solid soffit is higher than 1″ (2.5 cm) or one is not available, then the refrigerator must be braced to prevent tipping during use.

If the anti-tip boards are needed, they must be attached to the rear wall studs 80″ to 90″ (203

- 229 cm) above the floor (see “Install Anti-Tip Boards” for more information).

NOTE: A clearance of 1/2″ (1.3 cm) must be maintained above the top grille in order for the top grille to be removed.

(1.3 cm)

A grounded 3 prong electrical outlet should be placed within 4″ (10.2 cm) of the right side cabinets or end panel.

The water shutoff should be located in the base cabinet on either side of the refrigerator or some other easily accessible area. If the water shutoff valve is not in the cabinets, the plumbing for the water line can come through the floor or the back wall (see “Water Supply Requirements” for more information).

80" - 90"

(203-229 cm)

(10.2 cm)

831/4" (211.5 cm) min.

/4" (215 cm) max.

to bottom of solid soffit

Width

(see chart following)

3" (7.6 cm)

231/2"

(60 cm) min.

(28 cm)

11"

77" (196 cm)

(15.2 cm)

15.2 cm

2-2

WATER SUPPLY REQUIREMENTS

ANTI-TIP BOARDS

All installations must meet local plumbing code requirements.

The water shutoff should be located in the base cabinet on either side of the refrigerator or some other easily accessible area. The righthand side is recommended. The access hole through the right-hand side cabinet must be within 1/2″ (12.7 mm) of the rear wall.

(15.2 cm)

3" (7.6 cm)

11"

231/2"

(60 cm) m in.

(28 cm)

(15.2 cm)

If the water shutoff valve is not in the cabinets, the plumbing for the water line can come through the floor or the back wall. A 1/2″ (12.7 mm) hole for plumbing should be drilled 6″ (15.2 cm) to 12″ (30.4 cm) from the right-hand side cabinet or panel. On the floor, the hole should be no more than 11″ (28 cm) away from the back wall. On the wall, the hole should be no more than 3″ (7.6 cm) up from the floor.

IMPORTANT:

• The solid soffit must be within 1″ (2.5 cm)

maximum above the refrigerator. If the solid soffit is higher than 1″ (2.5 cm), or one is not available, prevent the refrigerator from tipping during use, as shown.

• It is recommended that the boards be installed before the refrigerator is installed.

• Boards must be long enough to fully cover the width of the compressor cover.

• Locate the boards so the bottom surface of the boards are 84″ (213 cm) from the floor.

• During installation, raise the refrigerator up so there is 1/4″ (6.4 mm) maximum between the top of the refrigerator and the bottom of the anti-tip boards. Do not crush the condenser cover when raising the rear leveling legs.

2" (5 cm)

If this recommended water line location is used, no additional plumbing must be purchased. If additional tubing is needed, use copper tubing and check for leaks. Install the copper tubing only in areas where the household temperatures will remain above freezing.

Do not use a piercing-type or 3/16″ (4.76 mm) saddle valve, which reduces water flow and clogs more easily. NOTE: Any refrigerator dealer has a kit available with a 1/4″ (6.35 mm) saddle-type shutoff valve, a union, and copper tubing. Before purchasing, make sure a saddletype valve complies with your local plumbing codes.

Cold Water Supply

Connect the ice maker to a cold water line with water pressure between 15 and 100 psi (103 690 kPa).

1. Center board 1/4" (6 mm) max. above refrigerato

2. Two 2" x 4" x 32" (5 cm x 10 cm x 81 cm) boards

3. Attach to studs with 6-#8 x 3" (7.6 cm) screws

4. Compressor cover

To Install The Anti-Tip Boards:

1. Mark the stud locations on the rear wall

80″ to 90″ (203 - 229 cm) above the floor.

2. Securely attach one or two 2″ x 4″ x 32″

(5 cm x 10 cm x 81 cm) wood boards to the wall studs behind the refrigerator. Use six #8 x 3″ (7.6 cm) or longer wood screws. The wood screws must be screwed into the studs at least 1-1/2″ (3.8 cm). The boards must overlap the compressor cover.

2-3

LOWERING THE LEVELING LEGS

All four leveling legs must contact the floor to support and stabilize the full weight of the refrigerator. Rollers are for moving the refrigerator, and not for permanent support.

Use a socket wrench to turn the leg levelers on both sides of the refrigerator to the right (clockwise) until the refrigerator weight is supported by the legs. The rollers should be off the floor. To avoid cabinet damage, do not apply more than 50 in/lbs (58 cm/kg) of torque to the leveling legs.

1. Rear leveling legs

2. Front leveling legs

1 2

LEVELING THE REFRIGERATOR

NOTE: Door panels must be installed before leveling.

1. Open the doors and place a level on top of the refrigerator frame. Check to see if the refrigerator is level from left to right.

2. Use the leveling bolts to adjust the leveling legs until the refrigerator is level from left to right.

1 2

1. Rear leveling bolt

2. Front leveling bolt

1 2

3. Place a level on the shelves and check to see if the refrigerator is level from front to back.

4. Use the leveling bolts to adjust the leveling legs until the refrigerator is level from front to back.

5. Make sure that all four leveling legs contact the floor and support the full weight of the refrigerator.

6. Make a final check to see that the refrigerator is level.

ADJUSTING THE DOORS

Door Alignment

Use the following steps to adjust the door alignment to the left, right, in, or out.

1. Inspect the spacing of the gap between the freezer and refrigerator doors. Make sure that the spacing between the doors is the same distance at the top and bottom.

1. Level to check left to right leveling

2. Level to check front to back leveling

1. Uneven door gap

2. If the door gap is uneven, loosen the four T27 flat-head mounting screws on top of both hinges. Loosen the screws to the point that the hinge is movable, but there is friction when trying to move the hinge. NOTE: Do not loosen the two 1/4″ hexhead mounting screws.

2-4

1. T27 flat-head mounting screws

2. 1/4 in. hex-head mounting screws

3. Adjust the hinges so that the door gap is the same distance at the top and bottom. The bottom distance should be used as a template for the top.

4. Tighten the screws on both hinges.

Door Height Adjustment

Overlay Models

Remove the two door stop screws: one from the bottom side using a 3/8″ openend wrench, and one from the top side using an Allen wrench.

1. Door stop screw from bottom

2. Door stop screw from top

Use the following steps to adjust the door height up or down after the doors have been leveled.

1. Open the freezer or refrigerator door and locate the hinge assembly at the bottom of the door, and remove the stop screw.

Classic & Architect® Models

Remove the door stop screw from the bottom side of the hinge.

123

1. Locking plate

2. Door stop screw

3. Bushing

2. Remove the locking plate, as shown.

3. Turn the bushing located underneath the bottom of the hinge using the open-end wrench. Turning the bushing to the left (counterclockwise) will raise the door. Turning the bushing right (clockwise) will lower the door.

4. After adjusting, check the doors to make sure they are even at the top and bottom. If the doors are not even, continue to turn the bushing to adjust the door height.

5. Replace the locking plate.

6. Turn the bushing slightly to align the hinge and locking plate screw holes.

7. Replace the door stop screw or screws and tighten.

8. Make final recheck to make sure the doors are aligned and even.

2-5

Door Swing Adjustment

1. Open the refrigerator and freezer doors and make sure that they open freely. If a door opens too wide, remove the door stop screw(s) from the bottom hinge.

2. Hold the door open to a position that is less

than 90°.

3. Replace the door stop screw(s) in the bottom hinge and tighten.

12 3

1. 130

2. 110

3. 90

2-6

THEORY OF OPERATION

Warmer

Power

On/Off

Colder

THE ELECTRONIC TEMPERATURE CONTROL PANEL

FREEZER REFRIGERATOR

°C

SELECT

OVERVIEW

The KitchenAid Built-In Refrigerator Constant Flow Temperature Management System uses two thermistors to monitor temperature changes inside the refrigerator and freezer compartments. The electronic control manages the operation of the variable capacity compressor (VCC), a variable speed evaporator fan motor, and a variable position air door. The air door allows independent temperature control of the refrigerator and freezer compartments.

The electronic control seeks the most efficient means possible to maintain temperatures as it controls the operation and speed of the compressor and the evaporator fan motor. Higher fan speed is used before increasing the compressor speed to minimize power consumption. A nearly constant run time is sought at the lowest possible fan and compressor speed.

Freezer temperatures can be set from 6°F to –5°F (–14°C to –21°C). Refrigerator temperatures can be set from 46°F to 34°F, (8°C to 1°C).

The Adaptive Defrost Control (ADC) portion of the electronic control utilizes “pulsed defrost” technology to perform the defrost function (see page 3-4).

Warmer

WATER FILTER

RESET

PERCENT LEFT

Colder

The electronic control monitors the water valve for total elapsed time and gallons of water used. The number displayed on the Water Filter Indicator (WFI) is the percentage of filter usage remaining.

The numeric display can be set for Fahrenheit or Celsius and displays the actual temperatures. The display range for the refrigerator is from 27° to 70°F (–2.8°C to 21°C). The normal freezer display range is from –5°F to 70°F (–21°C to 21°C). Temperatures above or below these limits will be displayed at the corresponding temperature limit. During Max Cool, the freezer display will read –5°F (–21°C), and the refrigerator will read 34°F (1°C).

The display will show the temperature setting any time the actual temperature is within ±6°F of the customer setting. This will prevent concern over temperature fluctuations when the doors are opened. Press the temperature adjustment key to view the current temperature setting, or to change the setting. When the temperature adjustment key is used to change the temperature setting, the display will brighten for 5 seconds.

Available features include:

• Water Filter Indicator

• Max Cool

• Over-Temperature Alarm

• Holiday Mode

3-1

TEMPERATURE CONTROL

The electronic control checks the resistance of the thermistors, and compares it to both the customer temperature settings and the last thermistor reading taken. This information is used to determine when to begin a cooling operation, and if a change is necessary in the damper setting, or the evaporator fan or compressor speed.

When a warm refrigerator is first put into a cooling mode, the air door partially opens, and the compressor and evaporator fan motors start to run at maximum rpm. The air door will gradually move to its fully open position.

As the actual temperature in the refrigerator nears the selected temperature setting, the electronic control compares the temperatures in both compartments. The compartment that has the greatest need for cooling, will control the speed of the evaporator fan motor.

Freezer Temperature Control — Temperature Increasing

When the freezer calls for cooling, the compressor begins to run at minimum rpm, (see the chart on page 3-3), and the evaporator fan begins to run at 2000 rpm. The compressor and evaporator speeds are continuously updated. Speed changes are made based on:

• The difference between the actual temperature and the selected temperature settings.

• The rate of temperature change.

If the temperature increases 4°F above the selected temperature setting, the evaporator fan speed begins to gradually increase. The evaporator fan motor reaches the maximum speed of 3000 rpm at 5°F above the selected temperature setting, and the compressor speed begins to gradually increase. A maximum compressor speed of 4500 rpm will be reached at 9°F above the selected temperature setting.

Freezer Temperature Control — Temperature Decreasing

When the freezer temperature begins to decrease, the process will reverse. The compressor speed decreases, followed by the evaporator fan speed.

Refrigerator Temperature Control — Temperature Increasing

When the refrigerator calls for cooling while the freezer is satisfied, the air door begins to open, and the evaporator fan starts to run at minimum speed. If the temperature continues to rise, the air door will continue to open. If the temperature continues to rise after the air door is fully open, the evaporator fan speed will gradually increase to a maximum of 3000 rpm. If the temperature continues to rise, the compressor starts to run, or if it has already been running, begins to increase in speed.

Refrigerator Temperature Control — Temperature Decreasing

As the refrigerator temperature approaches the selected setting, the control compares the temperatures in both compartments to determine which compartment will control the fan speed. If the freezer is further from the selected temperature setting, it controls the fan speed, and the air door begins to close, thus reducing the airflow to the refrigerator.

If the freezer is satisfied, the air door remains open, and the fan speed begins to decrease. When the selected temperature setting is reached, the air door closes.

3-2

COMPRESSOR

COMPRESSOR PROTECTION

The main control board supplies a 5 vdc, peakto-peak square wave, at 54 to 150 Hz, to the inverter board. A standard VOM will read approximately 2.5 vdc. The inverter board supplies the variable capacity compressor with three-phase 230 vac. Varying the frequency to the inverter board, and not the voltage, changes the speed of the compressor. The compressor can run at speeds of 1620 to 4500 rpm.

NOTE: It is not necessary, nor is it recommended, to test the output of the inverter board.

While the compressor is running, its speed is continuously updated. Speed is determined after analyzing two factors:

• The difference between the actual tempera-

ture and the selected temperature settings.

• The rate of temperature change.

Minimum compressor speed is based on the freezer’s selected temperature setting, as shown in the following chart.

To protect the compressor and maintain efficiency, minimum compressor off time is programmed into the main control board. When the compressor turns off, a minimum of 7 minutes must elapse before allowing a restart.

At the end of the 7 minute period, the condenser fan motor starts, and the main control board sends the compressor speed signal to the inverter. The compressor will not start for an additional minute, due to the inverter delay.

The inverter board utilizes a current limiting device and thermal protection that eliminates the need for a compressor-mounted thermal protector. The inverter will not allow a compressor restart for 8 minutes after the compressor turns off. This inverter delay will not occur after a power interruption, because inverter memory is lost (see “Power Interruption” on page 3-4).

EVAPORATOR FAN MOTOR

The evaporator fan motor is a 12 vdc, variable speed motor. The motor has four wires:

Freezer Temperature Compressor

Setting (°F)

Minimum Speed

6 to –2 1620 rpm

–3 1800 rpm

– 4 2000 rpm

–5 2200 rpm

The compressor generally cycles on and off according to the cut-in and cut-out temperatures of the freezer, however, the refrigerator can turn on the compressor if the evaporator fan is at maximum speed and the refrigerator temperatures are not dropping.

• A blue wire provides feedback to monitor the speed of the motor.

• A red wire provides a constant 12 vdc.

• A yellow wire provides a variable voltage of between 5 vdc and 17 vdc to control the motor speed from 2000 to 3000 rpm.

• A white wire provides a common return.

EVAPORATOR FAN & AIR DOOR DELAY

After defrost, an evaporator fan delay prevents unnecessary movement of warm, moist air through the refrigerator by chilling the evaporator prior to starting the fan. Immediately after defrost drip time, the compressor starts at 4500 rpm, but the evaporator fan is delayed for 8 minutes. Also, the air door remains closed during the 8 minute delay.

3-3

AIR DOOR

The air door is driven by a reversible DC stepper motor. The motor operates on a 12 vdc, peak-to-peak square wave. Voltage is delivered to the air door in a series of short pulses. It is not possible to obtain a reliable voltage reading with a VOM.

Separate windings are used to move the air door open or closed. The door can be in any one of 1800 positions from 0 to 90 degrees. The air door is used to fine-tune the airflow to the refrigerator.

The refrigerator temperature determines the opening of the air door. When the refrigerator requires cooling, if the evaporator fan motor is already running for the freezer, the air door partially opens, and then adjusts, if necessary. While the refrigerator is cooling, the door will be adjusting continuously to maintain or recover refrigerator temperature.

ADAPTIVE DEFROST

The adaptive defrost control allows the unit to enter a defrost mode only when it is needed. When powered up for the first time, the control initiates a defrost cycle after 8 hours of compressor run time. By monitoring the duration of defrost heating time and compressor run time, the control will continuously adapt the time between defrosts to optimize efficiency. Time between defrost periods will vary between 8 and 100+ hours.

Defrost will occur immediately when the compressor has run at 4000 rpm or greater for 1 hour, and 8 hours have elapsed since the last defrost.

PULSED DEFROST

For the first 2 minutes of defrost, the heater is on continuously. It will then cycle off for 1 minute, and back on for 2 minutes. The heater will continue to cycle at this ratio until the bimetal opens, or until 33 minutes has elapsed. At this point, heat is discontinued, and a 4-minute “drip time” begins. This allows the water to drain before the unit returns to a cooling mode. Maximum defrost time, (pulsed heat on/off time + drip time) is 37 minutes.

When entering a defrost cycle, if the bimetal is open, the time to defrost is reset to 8 hours, and the control will time through the entire 37 minute defrost period. During diagnostics this will allow a technician time to look for heater operation, and if necessary, bypass the bimetal.

POWER INTERRUPTION

After a power interruption, the following events will occur:

• The unit returns to the same operating mode and settings in use prior to the power interruption. If the unit was off, it remains off.

• Initially, the compressor, evaporator fan, and condenser fan motors will be off.

• The air door will close, and then adjust to the proper opening. The evaporator fan starts when the air door opens.

• The adaptive defrost control resets the compressor run time counter to 0, and if the freezer is above 20°F, the time to defrost is set to 8 hours.

• If the freezer temperature is below 12°F (–11.1°C), the compressor starts after a delay of 7 minutes. If the freezer temperature is above 12°F, the compressor starts immediately.

FAILURE DEFAULTS

In the event of a thermistor, or keypad failure, the control uses one of the following default modes, which will continue until the failure is corrected.

Refrigerator Thermistor

If the control senses an open or a shorted thermistor, the air door and the evaporator fan motor will begin to operate on a timed on and off cycle, based on current selected temperature settings. The evaporator fan motor will run when the air door is open.

At mid-settings of 37°F / 0°F, the air door will open for 16 minutes, and close for 30 minutes. Setting the freezer colder, or the refrigerator warmer, will reduce the door-open time. Setting the freezer warmer, or the refrigerator colder, will increase the door-open time.

3-4

Freezer Thermistor

MAX COOL MODE

If the control senses an open or a shorted thermistor, the compressor and the evaporator fan motor will begin to operate on a timed on and off cycle. The cycle time is based on current selected temperature settings.

At mid-settings of 37°F / 3°C, the compressor and the evaporator fan motors will run for 35 minutes, and be off for 25 minutes. Setting the freezer colder will increase the run time. Setting the freezer warmer will decrease the run time.

The compressor will run at minimum speed. The evaporator fan will also run at minimum speed, unless the refrigerator compartment requests a higher speed.

Keypad

If the control detects that the keypad is not working, it reverts to the default temperature settings of 37°F (3°C) in the refrigerator, and 0°F (–18°C) in the freezer.

Max Cool changes the refrigerator temperature setting to 34°F (1 °C) and the freezer to –5°F (–21°C) for 24 hours. During Max Cool, the freezer and refrigerator temperature displays show the new temperature settings, not the actual temperatures.

In most cases the motors run 100% for more than 1 hour. The control returns to the previous user setting after 24 hours, or any time the temperature settings are changed.

AUTOMATIC MAX ICE

Automatic Max Ice operates any time the ice maker water valve is energized. The duration of Automatic Max Ice is 1-1/2 hours. During Automatic Max Ice the following occurs:

• The freezer display shows the user tempera-

ture settings and not the actual temperature.

• The freezer temperature setting changes to

–5°F (–21°C).

• The evaporator fan runs at 3000 rpm.

Evaporator Fan Motor

If the evaporator fan motor malfunctions, the compressor will run at 4500 rpm for an indefinite period, except during the defrost periods. The “Call Service Alarm” will sound until the failure has been corrected.

ELECTRONIC CONTROL THERMAL SHUTOFF

The electronic control utilizes an on-board thermistor to shut the compressor off if the temperature rises above 160°F (71°C). When the temperature drops to 130°F (55°C), the compressor returns to normal operation. This cycle continues indefinitely until the cause of the high temperature has been corrected.

If this cycle is repeated four times within 24 hours, the “Call Service” indicator lights, and the alarm sounds.

• The compressor runs the entire 1-1/2 hour

mode. Speed is determined by the difference between actual freezer temperature and –5°F (–21°C).

HOLIDAY MODE

The Holiday Mode may be used for the following occasions:

• On vacation.

• Religious observance (Sabbath Mode).

When the Holiday Mode is selected, the corresponding green LED flashes for 2 seconds, and then remains on, to indicate that the feature is activated.

3-5

In the Holiday Mode the following occurs:

• Temperature selections remain at the current setting, but are not displayed.

• The Water Filter Indicator is not displayed, but monitoring continues.

• The alarms are disabled.

• The ice maker is disabled.

• The interior lights are disabled.

MASTER ALARM RESET

Pressing the Over-Temperature Reset will turn off the audio alarm, but does not affect the indicator light the first time the Over-Temperature Reset is pressed. The indicator light will turn off once the Over-Temperature Reset is pressed a second time. The audio alarm will not sound again for the current condition that caused the alarm until a new condition occurs.

• The temperature displays and all of the LEDs will be off, except for the Holiday Mode LED. The Holiday Mode LED will illuminate regardless of the door position.

• Keypad operation is disabled, with the exception of the Holiday Mode key, or the Power On/Off key.

The Holiday Mode will be cancelled if one of the following occurs:

• Pressing the Power On/Off, or Holiday Mode keypads.

• Failure of both thermistors.

• No feedback from the evaporator fan motor.

• Temperatures that are 15°F above user settings in either compartment.

When the Holiday Mode is cancelled, the Holiday Mode LED turns off, and the control reverts to the settings in use prior to activation. All inactive devices are restored, and the Water Filter Indicator is updated.

The Adaptive Defrost Control function is not effected by use of the Holiday Mode.

OVER-TEMPERATURE ALARM

The Over-Temperature Alarm sounds, and the indicator light flashes when either the refrigerator temperature exceeds 48°F (9°C), or the freezer temperature exceeds 15°F (–9°C) for over 1-1/2 hours. The appropriate temperature display flashes to show the user which compartment is effected. The alarm stops if the temperature(s) returns to normal, but the red Over-Temperature indicator and temperature display will continue to flash (refer to “Master Alarm Reset” to reset the Over-Temperature Alarm).

A Master Alarm Reset can be performed by turning the power to the refrigerator off and on again. The indicator light will turn on again after the Over-Temperature Reset is pressed, if the condition that caused the alarm is still present.

CALL SERVICE ALARM

Call Service is a visual and audio signal that alerts the user that the refrigerator needs service. The Call Service Alarm will sound when:

• Both thermistors have failed.

• The evaporator fan motor loses its feedback signal.

• An over-temperature condition occurs for 3 hours or more.

Reset using Master Alarm Reset.

DOOR OPEN ALARM

If either door is left open for more than 10 minutes, the interior lights will be disabled, the Door Open icon will flash, and the alarm will sound. If the door is closed during the alarm operation, the alarm will reset, but the icon will continue to flash until the temperature in the refrigerator drops below 45°F (7°C) and the freezer is below 15°F (–9°C)(refer to “Master Alarm Reset” to reset the Door Open Alarm).

SALES DEMONSTRATION MODE

This mode provides a sequential display of the temperature displays and feature LEDs. To enter the Demonstration Mode, press and hold the Max Cool and Power On/Off keys for 2 seconds. If the refrigerator or freezer door is open for 10 minutes, the interior lights will turn off.

3-6

AIR CIRCULATION

In order to ensure the proper refrigerator and freezer compartment temperatures, air must be able to flow between the two sections.

Air enters the bottom of the freezer compartment and moves up through the evaporator. Some of the cooled air from the evaporator is directed back into the freezer, and the rest goes into the refrigerator through the motorized air door. The refrigerator air then returns to the freezer through the bottom air return (see the illustration below).

It is important not to block any of the vents with food items. If the vents are blocked, airflow will be restricted, and the temperature management system will not function properly.

IMPORTANT: Because air circulates between both sections, any odors formed in one section will transfer to the other. Keep both sections clean, and wrap or cover foods tightly to prevent odors from occurring.

3-7

SEALED SYSTEM SCHEMATIC

Discharge

Freezer

Side

Compressor

Mullion

Refrigerator

Suction Line

Condenser

Drier

Heat Exchanger

Evaporator

Side

Condensate Loop

3-8

COMPONENT ACCESS

This section instructs you on how to service each component inside the refrigerator/freezer. The components and their locations are shown below.

COMPONENT LOCATIONS

Compressor

Inverter Assembly

Freezer Door

Switch

Ice Maker

Filter/Drier

Ice Maker Inlet Heated Fill Tube

Condenser Fan Motor

Meat Pan Power Supply

Power Switch

Touch Control Assembly

Main Control

Board Assembly

Motorized Air Door

Freezer Light

(1 of 2)

Freezer Thermistor

Auger Motor

Evaporator Fan

Motor Bimetal

Defrost Heater

Evaporator

Refrigerator Thermistor

Refrigerator Light

Meat Pan Air Baffle & Thermistor & Air Supply Thermistor

Meat Pan Electronic Touch Control Assy.

Water Reservoir

Water Valve

4-1

REMOVING A DOOR SWITCH AND THE POWER SWITCH

5. To remove a door switch:

a) With the door closed, remove the hex-

head screw from the door linkage at the top of the door. NOTE: The door spring will remain under slight tension when the door is closed.

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Lift the main decorative panel to unhook it and remove the panel.

3. Lift and remove the louvered decorative panel.

Main Decorative Panel Louvered Decorative Panel

Door Linkage Screw

b) Use a pair of pliers and lift the end of

the linkage off the square post.

4. Remove the eight screws from the unit compartment front cover, and pull the cover forward out of the way.

Screw (1 of 8) Unit Compartment Front Cover

Freezer Door Switch (Refrigerator Door Switch Shown In Right Column)

Power Switch

Square Post

c) Remove the two hex-head screws from

the door switch cover and remove the cover.

2 Cover Screws

4-2

d) Disconnect the wire connectors from

Power Cord (Ribbed)

Power Cord (Smooth)

White Wire

Black Wire

N/CN/C

the door switch terminals.

2 Wire Connectors

e) Press against the locking tab on the

switch body and push the switch out of the bracket.

b) Disconnect the wire connectors from

the switch terminals. NOTE: Be sure to reconnect the wires to the same terminal locations, as shown below.

c) Press against the four locking tabs on

the body of the power switch, and push the switch out of the bracket.

4 Wire Connectors

Push Switch Out Of Bracket

6. To remove the power switch:

a) Remove the two hex-head screws from

the switch bracket and turn the bracket over so you can access the wires.

Bracket Screws

Switch Locking Tabs

(2 of 4)

REASSEMBLY NOTE: When you reinstall the power switch in the bracket, be sure to position the switch with the On and Off markings as shown below. The switch wiring is also shown below. The terminal numbers are shown on the switch body.

Power Switch

4-3

REMOVING THE INVERTER ASSEMBLY

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

Ground Screw

Inverter Mounting Screws

2. Remove the main and louvered decorative panels (see page 4-2).

3. Remove the eight screws from the unit compartment front cover, and pull the cover forward out of the way (see page 4-2).

4. Disconnect the two inverter assembly wire connectors from the harness.

Inverter Assembly

2 Wire Connectors

5. Remove the two hex-head screws from the inverter assembly (see the photo at the top of the right column).

7. Using a large screwdriver, pry down on the compressor terminal cover, and remove it from the compressor.

8. Pull the inverter connector off the compressor pins.

9. Pull the green ground connector off the compressor terminal.

Pry Down & Unsnap Cover

Compressor

Ground Connector

6. Pull the inverter assembly forward and remove it from the rear bracket, then position the assembly out of the way.

Inverter Connector

4-4

10. Remove the hex-head screw from the inverter’s green ground wire, (see the photo at the top of the right column on page 4-4), and remove the inverter assembly.

Electrical Shock Hazard

Connect green ground wire to ground screw.

Failure to do so can result in death or electrical shock.

11. Install the new inverter assembly and connect the green ground wire to the chassis with its hex-head screw.

4-5

REMOVING THE CONDENSER FAN MOTOR

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Remove the main and louvered decorative panels (see page 4-2).

3. Remove the eight screws from the unit compartment front cover, and pull the cover forward out of the way (see page 4-2).

Condenser Fan Motor

4. Remove the three hex-head screws (2 in front and 1 in back) from the condenser fan motor bracket (see the photo at the top of the right column).

Condenser Fan Motor Screw (1 of 3)

6. Remove the speed nut from the condenser fan blade and remove the fan from the motor shaft. NOTE: Be sure to position the fan blade with the “Nut Side” facing the front end of the motor shaft when you reinstall it.

Fan Blade Speed Nut

5. Move the condenser fan motor assembly to the left and away from the condenser. Rotate the bottom of the bracket toward the rear of the unit, and move the condenser fan motor assembly to the front.

4-6

7. Disconnect the wire connector from the condenser fan motor.

8. Remove the two hex-head screws from the condenser fan motor and remove the motor from the bracket.

Bracket Screws

Wire Connector

4-7

REMOVING THE ICE MAKER INLET HEATED FILL TUBE

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Remove the main and louvered decorative panels (see page 4-2).

3. Remove the eight screws from the unit compartment front cover, and pull the cover forward out of the way (see page 4-2).

Screw (1 of 3)

Ice Maker Inlet Heated Fill Tube Cover & Connector

6. Press the front locking ring on the John Guest fitting and slide the fitting off the inlet.

John Guest Fitting

Locking Ring

Ice Maker Inlet Heated Fill Tube

4. Disconnect the heated fill tube wire connector from the harness (see the photo at the top of the right column).

5. Remove the three hex-head screws from the ice maker inlet heated fill tube cover and remove the cover.

7. Remove the two hex-head screws from the ice maker inlet heated fill tube, and pull the fill tube straight up and out of the unit.

Fill Tube Screws

4-8

REMOVING THE MAIN CONTROL BOARD ASSEMBLY

5. Slide the wire grommet out of the enclosure slot and position the assembly so that you can access the board.

6. Remove the wire connectors from the main control board assembly.

Wire Grommet Out Of Enclosure Slot

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Remove the main and louvered decorative panels (see page 4-2).

3. Remove the eight screws from the unit compartment front cover, and pull the cover forward out of the way (see page 4-2).

4. Remove the two hex-head screws from the main control board assembly enclosure.

Main Control Board Assembly

2 Screws

Main Control Board

Wire Connectors

7. Remove the main control board from the five standoffs. Press the locking tab on each standoff to release the board.

Press Locking Tab On Standoff

4-9

REMOVING THE ELECTRONIC

MEAT PAN POWER SUPPLY BOARD

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

Electronic Meat Pan Power Supply

Enclosure Screw

Ground Wire Screw

7. Pull the meat pan power supply assembly forward as far as it will go, and turn it over so you can access the board.

1. Unplug refrigerator or disconnect power.

2. Remove the main and louvered decorative panels (see page 4-2).

3. Remove the eight screws from the unit compartment front cover, and pull the cover forward out of the way (see page 4-2).

Electronic Meat Pan Power Supply

8. Disconnect the two wire connectors from the meat pan power supply board.

9. Remove the meat pan power supply board from the three standoffs. Press in the locking tab on each standoff to release the board.

Wire Connectors

Meat Pan Power Supply Board

4. Remove the main control board assembly from the unit (see page 4-9 for the procedure).

5. Remove the hex-head mounting screw from the meat pan power supply board enclosure (see the photo at the top of the right column).

6. Remove the hex-head screw from the meat pan power supply green ground wire at the chassis.

4-10

Electrical Shock Hazard

Connect green ground wire to ground screw.

Failure to do so can result in death or electrical shock.

10. Install the electronic meat pan power supply assembly in the unit, and connect the green ground wire to the chassis with its hex-head screw.

4-11

REMOVING THE COMPRESSOR AND FILTER/DRIER

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Remove the main and louvered decorative panels (see page 4-2).

TIP OVER HAZARD

Refrigerator is top heavy and tips easily when not completely installed.

Keep door taped closed until refrigerator is completely installed.

Use two or more people to move and install refrigerator.

Failure to do so can result in death or serious injury.

3. Remove the eight screws from the unit compartment front cover, and pull the cover forward out of the way (see page 4-2).

4. Use the leveling screws and lower the refrigerator onto the four rollers.

Leveling Screws Rear Front

5. Pull the refrigerator out of its mounting location.

6. Remove the eight screws from the unit compartment cover (two on the left side, four on the right side, and one in each of the rear corners).

7. Lift the unit compartment cover up and off the unit.

Right Rear

Cover Screw

Unit Compartment Cover

4 Cover Screws

4-12

8. Remove the compressor terminal cover. To remove the cover, insert a flat-bladed screwdriver into the top slot, push down on the screwdriver to release the catch, and then rotate the cover forward at the top, and lift it off the bottom catch.

9. Loosen the strain relief from the compressor terminal cover and remove the wire.

Terminal Cover & Strain Relief

11. Access the sealed system and discharge the refrigerant into an approved recovery system.

12. Unbraze the suction and discharge lines from the compressor.

13. Cut the filter/drier from the system (do not use a torch to remove the filter/drier).

Suction Line

10. Disconnect the green ground wire and the 3-pin inverter output connector from the compressor pins.

Ground Wire

Filter/Drier

Discharge Line

14. Remove the four mounting bolts and the rubber grommets from the compressor.

15. Lift the old compressor from the refrigerator and replace it.

Inverter Connector

4-13

REMOVING THE BIMETAL, THE EVAPORATOR FAN

MOTOR, THE DEFROST HEATER, AND THE EVAPORATOR

Cover

Screws

(2 of 10)

Light Lens

Cover Tabs

And Slots

Evaporator

Cover

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Open the freezer door.

Shelf Studs

(1 of 8)

Bin Glide

(1 of 4)

Refer to the photo at the top of the right column.

3. Unhook the tabs on the lens of the lower freezer light and remove it from the liner.

4. Remove the bins and shelves from in front of the evaporator cover.

5. Remove all of the shelf mounting studs.

6. Remove the two screws from each of the four bin glides and remove the glides from the sides of the freezer liner.

7. Remove the ten hex-head screws from the evaporator cover.

8. Lift and unhook the two evaporator cover slots from the chassis tabs, and pull the cover out of the freezer.

9. To remove the bimetal:

a) Unclip the bimetal from the evaporator

inlet tubing.

b) Follow the instructions that were sup-

plied with the replacement bimetal to connect the wires.

Bimetal

Clip

4-14

10. To remove the evaporator fan motor:

11. To remove the defrost heater:

a) Pull the fan blade off the motor shaft. b) Unclip the motor.

c) Disconnect the wire connector from the

harness.

Pull Fan Blade Off Motor Shaft

Evaporator

Fan Motor

a) Remove the two hex-head screws from

the evaporator fan motor shroud.

b) Unclip the bimetal from the evaporator

inlet tubing.

c) Disconnect the defrost heater and

evaporator fan motor connectors from the wiring harness.

d) Remove the evaporator fan motor

shroud and the two side foam blocks.

Foam Blocks

Unclip Motor

Wire Connector

d) Remove the isolator from the motor.

Isolator

Evaporator Fan Motor

Shroud Screws

Defrost Heater

Connector

Bimetal

Evaporator

Fan Motor Connector

Continued on the next page.

4-15

e) 36″ Models Only: Remove the hex-

head screws from the right evaporator cover mounting bracket and remove the bracket. Be careful not to drop the screws down the drain hole at the bottom of the liner. Cover the hole with a cloth.

Right Evaporator Cover

Mounting Bracket

NOTE: Be very careful not to over-bend the refrigerant tubing.

g) Bend the two hangers at the bottom of

the evaporator and remove the heater from the hangers.

Defrost Heater

f) Lift the evaporator up slightly and un-

hook it from the liner, then pull the bottom of the evaporator toward the front of the unit.

Bend The Two Hangers

h) Remove the foam block from the right

side of the evaporator.

Foam Block

Lift & Pull Out

4-16

i) Unfasten the defrost heater from the

two metal clips on the right side of the evaporator, and slide the defrost heater down and off the evaporator.

12. To remove the evaporator:

a) Remove the defrost heater from the

evaporator (see step 11).

b) Access the sealed system and dis-

charge the refrigerant into an approved recovery system.

c) Remove and replace the evaporator.

NOTE: Refer to the “Defrost Heater Reassembly Notes” to the left when reinstalling the evaporator.

Heater Clip

(1 of 2)

DEFROST HEATER REASSEMBLY NOTES:

1. The evaporator fan motor shroud has a foam block on each side. Note the position of these blocks in the photo and make sure that you reinstall them correctly.

Foam Blocks

Defrost Heater

Evaporator

Evaporator Fan Motor Shroud

2. Be sure to reinstall the foam block on the right side of the evaporator, as shown in the photo in step 11h on the previous page.

Lift & Pull Out

4-17

REMOVING THE TOUCH AND DISPLAY BOARDS

& THE MOTORIZED AIR DOOR

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Open the refrigerator door and remove the items from the top shelf. If necessary, remove the top shelf so you can easily access the touch control assembly or the motorized air door. The locations are shown below.

Touch Control Assembly

b) Disconnect the two wire connectors

from the touch control assembly and remove the assembly from the refrigerator.

Wire Connectors

c) Remove the two screws from the plas-

tic cover and remove the cover from the touch control panel.

Cover

Screws

Motorized Air Door

3. To remove the touch and display

boards:

a) Remove the three hex-head screws

from the back of the touch control assembly and lower the assembly.

3 Screws At Back Of Control

d) Disconnect the wire connector from the

end of the display board.

Display Board

Wire Connector

e) Unclip the touch board from the locking

tabs and remove the board.

Board Tabs

Touch Board

4-18

4. To remove the motorized air door:

a) Remove the hex-head screws from the

motorized air door cover and remove the cover.

Screw

Motorized Air Door Cover

Screw

b) Pull the motorized air door out of the

refrigerator liner opening.

c) Disconnect the wire connector from the

motorized air door and remove it.

REASSEMBLY NOTE: Be sure to position the motorized air door with the motor and wires as shown in the bottom left photo.

Motorized Air Door Wire Connector

Motorized Air Door

Pull Out

4-19

REMOVING THE MEAT PAN AIR BAFFLE & THERMISTOR,

THE AIR SUPPLY THERMISTOR, AND THE MEAT PAN

ELECTRONIC TOUCH CONTROL ASSEMBLY

3. To remove the meat pan air baffle & thermistor:

a) Remove the two screws from the baffle

housing assembly, then tilt the top of the assembly forward, and pull the bottom tab from the slot.

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

Meat Pan Air Baffle Housing Assembly

2. Remove the meat pan and glass cover from the refrigerator.

Meat Pan W/Glass Cover

Screws

b) Disconnect the two wire connectors

from the harness, and remove the air baffle housing assembly from the refrigerator.

Wire Connectors

4-20

c) Remove the screw from the cover and

remove the cover from the baffle housing.

Housing Cover

4. To remove the air supply thermistor:

a) Remove the meat pan air baffle assem-

bly from the unit (see steps 3a & 3b).

b) Remove the four screws from the meat

pan air duct and remove the duct.

Housing

Screw

d) Pull the meat pan air baffle assembly

and thermistor out of the housing.

Meat Pan Air Baffle Assembly

Thermistor

Housing

e) Disconnect the meat pan thermistor

connector from the harness.

f) Disconnect the four connector harness

assembly from the housing. NOTE: Make sure that you reconnect the harness to the indicated meat pan air baffle assembly connector shown below.

Screw (1 of 4)

Meat Pan Air Duct

c) Remove the screw from the air supply

thermistor.

d) Disconnect the air supply thermistor

connector from the harness and remove the thermistor.

Air Supply Thermistor

Meat Pan Air Baffle Assembly

Thermistor Connector

Harness Connector Here

4 Connector Harness Assembly

Screw

Harness Connector

Continued on the next page.

4-21

5. To remove the meat pan electronic touch control assembly:

a) Remove the meat pan air baffle assem-

bly from the unit (see steps 3a & 3b on page 4-20).

b) Remove the two screws from the bin

glide and remove the glide.

c) Remove the two screws from the deco-

rative cover and remove the cover.

Bin Glide Screws

Decorative Cover

Cover Screws

e) Lift the assembly from the bottom and

pull it out, then unclip the top and pull it out so you can access the wiring.

f) Disconnect the two harness connec-

tors from the board and remove the assembly.

2 Wire Connectors

d) Remove the two screws from the meat

pan electronic touch control assembly.

Electronic Touch Control Assembly

Screws

4-22

REMOVING A THERMISTOR

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

3. Remove the hex-head screw from the thermistor cover. Pull the cover forward at the screw end, and unhook the tab from the slot at the other end of the thermistor cover.

Screw

Refrigerator / Freezer

Thermistor Cover

NOTE: The refrigerator and freezer thermistors are identical and are removed in the same manner.

2. Depending on the thermistor, open the freezer or refrigerator door, and remove any items from the shelf that are in front of the thermistor. It may be necessary to remove the shelf as well. The thermistor locations are shown below.

Refrigerator Thermistor

4. Disconnect the 2-wire connector and remove the thermistor.

Connector

Refrigerator / Freezer

Thermistor

Freezer Thermistor

4-23

REMOVING THE ICE MAKER,

THE EMITTER, AND THE RECEIVER

4. To remove the ice maker:

a) Close the spring-loaded emitter door

and open the ice maker door.

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Open the freezer door.

3. Remove the ice bin from the freezer door by pressing in on the latch button, and lifting the bin off the door shelf.

Ice Bin

Emitter Door

Ice Maker Door

b) Push the ice maker door to the left so

that the right pin disengages from the pivot arm, then lift the pin out of the pivot, and remove the left pin.

Ice Maker Door

Pivot & Pin

NOTE: The ice bin disassembly is shown in the “Tech Tips” in Section 8.

Latch Button

c) Remove the three screws from the left

side of the ice maker bracket, and the single screw from the right side.

Left Bracket Screws

Right Bracket Screw

4-24

d) Disconnect the two ice maker connec-

tors from the freezer wiring harness and remove the ice maker from the freezer.

2 Wire Connectors

e) Remove the three hex-head screws

from the bottom of the ice maker bracket and remove the bracket from the ice maker

Bottom 3 Bracket Screws

b) Disconnect the harness connector from

the emitter module board and remove the module.

Emitter

Connector

6. To remove the receiver module:

a) Remove the three screws from the re-

ceiver module and pull it out of the freezer liner opening.

5. To remove the emitter module:

a) Remove the three screws from the emit-

ter module and pull it out of the freezer liner opening.

Screw (1 of 3)

Emitter Module

Receiver

Module

Screw (1 of 3)

b) Disconnect the harness connector from

the receiver module board and remove the module.

Receiver

Connector

4-25

REMOVING THE AUGER MOTOR

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

6. Remove the spring from the top of the hex drive shaft.

Spring

7. Remove the containers from the freezer door so you can access the motor housing cover.

2. Open the freezer door.

3. Remove the ice bin from the freezer door (see page 4-24).

4. Remove the two screws from the hex drive shaft coupling holder and remove the coupling assembly.

5. Pull the coupler, seals, and bushing from the hex drive shaft.

Coupler

Seals Bushing

8. Remove the two screws from the motor housing cover and remove the cover.

Screws

Motor Housing Cover

9. Disconnect the harness connector from the motor terminals.

10. Remove the four screws from the auger motor bracket.

Screw (1 of 4)

Screw (1 of 2)

Coupling Holder

Motor Connector

4-26

11. Allow the motor and hex drive shaft to drop down and remove them from the unit, then pull the hex drive shaft out of the motor.

Hex Drive Shaft

Auger Motor

4-27

REMOVING THE WATER RESERVOIR AND WATER VALVE

5. Unclip the wires and remove the dispenser wiring terminal cover, then disconnect the dispenser wiring connectors.

Dispenser Wiring

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

Terminal Cover

Bottom Trim

2. Turn off the water supply to the refrigerator.

3. Remove the two screws from the base grille and remove the grille.

Screw

Base Grille

Screw

4. Remove the six screws from the bottom trim and remove the trim and the drip pan.

Bottom Trim Screw (1 of 6)

Water Valve

6. Position a container to catch the water in the next step.

7. Push in on the John Guest retaining ring and remove the water inlet tubing from the water valve.

8. Remove the two screws from the water valve and pull the valve forward as far as possible.

Water Valve Screws

Water Inlet Tubing

Drip Pan

4-28

9. To remove the water valve:

a) Push in on the John Guest retaining

rings and remove the two water outlet tubes from the water valve.

b) Disconnect the electrical connectors

from the water valve solenoids and remove the water valve. NOTE: The electrical connectors have different sized terminals so that they cannot be interchanged on the solenoids.

Water Valve

Electrical Connectors

c) Disconnect the water reservoir tubing

from the John Guest union at the bottom of the refrigerator.

Water Outlet Tubing

10. To remove the water reservoir:

a) Push in on the John Guest retaining

ring and remove the water reservoir tubing from the water valve.

b) Remove the other end of the water

reservoir tubing from the John Guest union.

John Guest

Union

Water

Reservoir

Tubing

d) Remove the crisper and bottom shelves

from the refrigerator compartment.

e) Remove the hex-head screw from the

water reservoir tubing straps.

f) Pull the ends of the water reservoir

tubing up through the grommet.

Water Reservoir Tubing Straps

Water

Reservoir

Tubing

Pull Tubing Up Through Grommet

4-29

REMOVING A LIGHT SOCKET

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

3. Remove the light shield.

4. Remove the bulb from the socket.

5. Grasp the light socket by the rounded portion and pull out on the narrow end, while pressing the locking arm (see the photo below) with a screwdriver blade. Pull out on the socket until it disengages from the opening.

Press In On Locking Arm At Narrow End

1. Unplug refrigerator or disconnect power.

NOTE: The refrigerator and freezer light sockets are identical and are removed in the same manner.

2. Depending on the light, open the freezer or refrigerator door, and remove any items from the shelf that are in front of the light. It may be necessary to remove the shelf as well. The light locations are shown below.

Refrigerator

Lights

Freezer

Lights

Grasp Rounded Portion Here & Pull Out

6. Disconnect the two wires from the light socket terminals.

Locking Arm

Wire

4-30

REMOVING THE WATER & ICE DISPENSER

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Remove the drip tray from the water & ice dispenser.

c) Bow the front panel out at the center

and remove it from the top and bottom channels of the water & ice dispenser.

Top Channel

Bottom Channel

d) Proceed to step 5 on the next page to

remove the dispenser.

4. For stainless steel trimless doors:

Drip Tray

NOTE: There are two types of water and ice dispensers: one for doors with panels, and the other for stainless steel trimless doors. The front panels for each type of door are removed differently. Refer to step 3 for paneled doors, or step 4 for stainless steel trimless doors, to remove either type of front panel.

3. For paneled doors:

a) Position a wood block along the bottom

edge at the left corner of the water & ice dispenser.

b) Use a rubber mallet, and hit the block

while you pull out at the bottom, so that the tab releases the panel from the dispenser housing.

Wood Block

a) Partially open the freezer door. b) Remove the screws from the freezer

door handle and remove the handle.

Continued on the next page.

4-31

c) Repeat the previous step for the other

corner of the front panel.

d) Pull the bottom of the front panel out

and then down to remove it from the dispenser.

Front Panel

Pull Out At Bottom

5. To remove the dispenser:

a) Disconnect the wire connectors from

the switch pack terminals and remove the front panel. NOTE: The wire colors are marked next to each terminal on the switch pack.

b) Push the two locking tabs to unlock

them and pull the dispenser switch assembly down and forward.

2 Locking Tabs

Dispenser Switch Assembly

c) Disconnect the three wire connectors

and the ice door heater ribbon cable from the dispenser switch assembly and remove the assembly.

Ribbon Cable

Switch Pack

(10 Connectors)

3 Connectors

Dispenser Switch Assembly

4-32

6. To remove a microswitch:

a) Push the two locking tabs to unlock the

microswitch and slide the switch off the pins.

b) Disconnect the wire connectors from

the switch terminals.

Microswitches Microswitches

c) Push the ARD off the retaining bracket.

ARD

Locking Tab

7. To remove the anti-run-on device (ARD):

a) Disconnect the 1/4″ tubing from the

John Guest union at the bottom of the refrigerator.

b) Remove the clip and tape from the 1/4″

tubing.

Tape

Clip

John Guest Union

Water Reservoir Tubing

Clip

d) Remove the hex-head screw from the

ARD retaining bracket and remove the bracket.

e) Feed the 1/4″ tubing from the bottom

and pull the ARD and tubing out of the door. NOTE: The tubing may be easier to remove if you remove the tubing conduit from the bottom of the freezer door (see below).

Pull Tubing Out Of Door

ARD Bracket Screw

Tubing Conduit

4-33

REMOVING A DOOR

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before

operating. Failure to do so can result in death or

electrical shock.

1. Unplug refrigerator or disconnect power.

2. Turn off the water supply to the refrigerator.

3. Remove the two screws from the base grille and remove the grille.

Dispenser Wiring Terminal Cover

Dispenser Wiring Connector

6. Disconnect the water reservoir tubing from the John Guest union at the bottom of the unit.

Screw

Base Grille

Screw

4. Remove the items from the door shelves.

NOTE: If you are removing a dispenser model freezer door, perform steps 5 and 6 on this page. If you are removing a refrigerator door or a non-dispenser freezer door, proceed to step 7 on page 4-35.

5. Unclip the dispenser wiring terminal cover from the bottom of the unit, then disconnect the dispenser wiring connector (see the photo at the top of the right column).

John Guest Union

Water Reservoir Tubing

4-34

7. With the door closed, remove the hexhead screw from the door linkage at the top of the door. NOTE: The door spring will remain under slight tension when the door is closed.

Door Linkage Screw

8. Use a pair of pliers and lift the end of the linkage off the square post.

9. Place a support under the door to prevent it from falling.

10. Remove the four T27 screws from the door hinge.

11. Lift the door so the bottom hinge is off the pin and remove the door.

Door Hinge

(4 T27 Screws)

Square Post

4-35

— NOTES —

4-36

COMPONENT TESTING

Before testing any of the components, perform the following checks:

• Control failure can be the result of corrosion on connectors. Therefore, disconnecting and reconnecting wires will be necessary throughout test procedures.

• All tests/checks should be made with a VOM or DVM having a sensitivity of 20,000 ohmsper-volt DC, or greater.

Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.

THERMISTOR

• Check all connections before replacing components, looking for broken or loose wires, failed terminals, or wires not pressed into connectors far enough.

• Resistance checks must be made with power cord unplugged from outlet, and with wiring harness or connectors disconnected.

6. Depending on the temperature, the meter

should indicate within the approximate range, as shown in the chart below.

Refer to page 4-23 for the procedure for servicing a thermistor.

1. Run the diagnostics tests (see page 6-1) and test the thermistors in steps 01 and 02.

NOTE: For accurate temperature/resistance readings, continue with the remaining steps to check the resistance of the thermistor(s).

2. Unplug refrigerator or disconnect power.

3. Disconnect the thermistor wire connector from the main harness.

4. Set the ohmmeter to the R x 1K scale.

5. Insert the ohmmeter test leads into the two connector pins of the thermistor connector.

TEMPERATURE RESISTANCE TEMPERATURE RESISTANCE

(° F)

–5 25900-27500 4 5 5930-6300

0 22100-23500 50 5190-5510

5 18900-20000 55 4550-4830

10 16200-17200 60 4000-4240

15 13900-14800 65 3520-3730

20 12000-12800 70 3100-3300

25 10400-11000 75 2740-2910

30 8990-9550 8 0 2430-2580

32 8750 85 2160-2290

35 7800-8290 9 0 1920-2030

4 0 6800-7220

OHMS (APPROX.)

(° F)

OHMS (APPROX.)

NOTE: If the resistance of the thermistor(s) was normal, perform the following voltage test.

1. Set the voltmeter to read a maximum voltage of 10 volts DC.

2. Connect power to the refrigerator and allow it to enter the “cooling” mode.

3. With the thermistor disconnected and the refrigerator in the cooling mode, touch the voltmeter test leads to the thermistor main harness connector pins. The meter should indicate approximately 5 volts DC.

If the voltage was not present, check for a thermistor output at the main control board

5-1

(see page 5-5).

Electrical Shock Hazard

Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.

EVAPORATOR FAN MOTOR

1 34

Refer to page 4-14 for the procedure for servicing the evaporator fan motor.

1. Run the diagnostics tests (see page 6-1) and check for the proper operation of the evaporator fan motor in step 03.

NOTE: During the evaporator fan motor operation, 5 to 17 volts DC will be present at the yellow and white wires. A constant 12 volts at the red and white wires will be present anytime the fan motor is operating. The remaining steps will allow you to check the resistance of the evaporator fan motor.

CONDENSER FAN MOTOR

1234

Refer to page 4-6 for the procedure for servicing the condenser fan motor.

1. Run the diagnostics tests (see page 6-1) and check for the proper operation of the condenser fan motor in step 04.

NOTE: During the condenser fan motor operation, 120 volts AC will be present at pins 1 and

2. Unplug refrigerator or disconnect power.

3. Disconnect the wire connector going to the evaporator fan motor.

4. Set the ohmmeter to the R x 10K scale.

5. Touch the ohmmeter test leads to pins 1 (white wire) and 4 (red wire) of the evaporator fan motor connector. The meter should indicate approximately 1400 to 1700 Ω.

5-2

Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.

COMPRESSOR & INVERTER

Pins

Electrical Shock Hazard

Refer to pages 4-4 and 4-12 for the procedures for servicing the inverter and compressor.

1. Run the diagnostics tests (see page 6-1) and check for the proper operation of the compressor in step 05.

NOTE: If the compressor does not operate perform the following steps.

2. Connect power to the refrigerator and allow it to enter the “cooling” mode.

3. While the refrigerator is in the cooling mode, the inverter and main control board voltages should be as shown in the chart below.

4. Set the voltmeter to read the voltages shown in the chart.

• If the 3 to 6 volts DC is not present at

the inverter red/white and red wires, check P7-3 and P7-8 on the main control board for 3 to 6 volts DC. If the voltage is not present, replace the main control board.

• If the 3 to 6 volts DC is present at the main control board, continue with step 5.

5. Unplug refrigerator or disconnect power.

6. Disconnect the wire connector going to the compressor.

7. Set the ohmmeter to the R x 1 scale.

8. Touch the ohmmeter test leads to any two pins. The meter should indicate approximately 6 to 7 Ω. Check between each set of pins to test all three windings.

9. Set the ohmmeter to the highest scale.

10. Touch one ohmmeter test lead to the cabinet ground and the other lead to each of the three compressor terminals. The meter should indicate an open circuit (infinite).

Main Control Board P7-3 (Red) & P7-8 (Red/White) 3 To 6 Volts DC

COMPONENT INPUT/ OUTPUT LOCATIONS VOLTAGES

Inverter

Red/White & Red Wires 3 To 6 Volts DC

Black & White Wires 120 Volts AC

5-3

Electrical Shock Hazard

Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.

MOTORIZED AIR DOOR

Refer to page 4-18 for the procedure for servicing the motorized air door.

1. Run the diagnostics tests (see page 6-1) and check for the proper operation of the air door in step 06.

NOTE: A 12 volts DC square wave is supplied to the air door in a series of short pulses. It is not possible to obtain a reliable voltage reading with a VOM. The remaining steps will allow you to check the resistance of the air door motor.

2. Unplug refrigerator or disconnect power.

3. Disconnect the motorized air door wire connector from the main harness.

4. Set the ohmmeter to the R x 10 scale.

5. Touch one of the ohmmeter test leads to the motorized air door connector with the yellow wire and the other test lead to the red wire. The meter should indicate approximately 375 to 425 Ω.

6. Touch one of the ohmmeter test leads to the motorized air door connector with the white wire and the other test lead to the blue wire. The meter should indicate approximately 375 to 425 Ω.

DEFROST HEATER & BIMETAL

Refer to page 4-14 for the procedures for servicing the defrost heater and bimetal.

1. Run the diagnostics tests (see page 6-1) and check for the proper operation of the defrost heater and bimetal in step 07.

NOTE: If the bimetal is closed, the voltage at the defrost heater terminals will be 120 volts AC. The remaining steps will allow you to check the resistance of the defrost heater and bimetal.

2. Unplug refrigerator or disconnect power.

3. Disconnect one of the wires going to the defrost heater.

4. Set the ohmmeter to the R x 1 scale.

5. Touch the ohmmeter test leads to the defrost heater terminals. The meter should indicate approximately 19 to 27 Ω.

6. Touch the ohmmeter test leads to the defrost bimetal wire connectors. The meter should indicate as follows:

• With the bimetal below 20° F, the meter

should indicate continuity (0 Ω).

• With the bimetal above 50° F, the meter

should indicate an open circuit (infinite).

5-4

Electrical Shock Hazard

Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.

MAIN CONTROL BOARD

Refer to page 4-9 for the procedure for servicing the main control board.

NOTE: See the chart for the main control board test specifications.

DISPLAY BOARD

123

THERMISTORS

INPUTS

4 3 2 1

120 VAC SUPPLY

2345

5678

OUTPUTS

109876

OUTPUTS

PLUG PIN # DESCRIPTION

1 Communication Line N /A

2 Display Voltage 12 VDC

3 GND GND

1 2 345

1 Ref. Thermistor GND

2 Frz. Thermistor GND

3 Ref. Thermistor Output 5 VDC

4 Frz. Thermistor Output 5 VDC Measured at pins 2 & 4

1 Ref. Door Sw Enable 120 VAC

2 Frz. Door Sw Enable 120 VAC

3 N/A

1 2 345

4 Ref. Door Input 120 VAC

5 Ice Maker Valve Input 120 VAC

6 Dispenser Valve Input 120 VAC

7 Bimetal Input 120 VAC

8 Frz. Door Input 120 VAC

1 AC GND AC GND

2 AC L1 120 VAC

3 AC Neutral AC Neutral

4 AC Neutral AC Neutral

5 AC L1 120 VAC

1 Condenser Fan 120 VAC

2 N/A

3 N/A

4 Defrost Heater 120 VAC

5 Ice Maker Enable 120 VAC

1 Air Door

2 Air Door

3 Compressor Drive 3 - 6 VDC

4 Evap. Fan Feedback N /A

5 Evap. Fan Constant 12 VDC Measured at pins 5 & 9

6 Air Door

7 Air Door

8 Compressor Drive 3 - 6 VDC

9 Evap. Fan Ground Evap. GND

10 Evap. Fan Run Voltage 5 - 12 VDC Measured at pins 9 & 10

OUTPUT

CONDITION

Measured at pins 2 & 3

Measured at pins 1 & 3

Voltage present when door is o

en Voltage present when ice maker is ener

ized

Voltage present when

enser valve is energized

dis

Voltage present when bimetal is closed

Voltage present when condenser fan is on

Voltage present when defrost heater is on

Voltage present when I/M bail arm is down & I/M is active

Measured at pins 3 & 8

5-5

Electrical Shock Hazard

Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.

POWER SWITCH

Power Cord (Smooth)

Black Wire

Refer to page 4-2 for the procedure for servicing the power switch.

1. Unplug refrigerator or disconnect power.

2. Disconnect the wires going to the power switch.

3. Set the ohmmeter to the R x 1 scale.

4. Press the switch rocker to the indicated position, then touch the ohmmeter test leads to the following switch terminals. The meter should indicate as shown:

Power Cord (Ribbed)

White Wire

N/CN/C

DOOR SWITCH

Refer to page 4-2 for the procedure for servicing a door switch.

1. Unplug refrigerator or disconnect power.

2. Disconnect one of the wires going to the door switch.

3. Set the ohmmeter to the R x 1 scale.

4. Touch the ohmmeter test leads to the N.O. and COM door switch terminals. The meter should indicate an open circuit (infinite).

5. Press the door switch actuator button and the meter should indicate continuity (0 Ω).

6. Touch the ohmmeter test leads to the N.C. and COM door switch terminals. The meter should indicate continuity (0 Ω). NOTE: The door switches are normally-closed.

7. Press the door switch actuator button and the meter should indicate an open circuit (infinite).

a) OFF—2 and 3 = open (infinite). b) OFF—5 and 6 = open (infinite). c) ON—2 and 3 = continuity (0 Ω). d) ON—5 and 6 = continuity (0 Ω).

5-6

Electrical Shock Hazard

Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.

AIR SUPPLY THERMISTOR

Refer to page 4-20 for the procedure for servicing the air supply thermistor.

1. Unplug refrigerator or disconnect power.

2. Disconnect the thermistor wire connector from the main harness.

3. Set the ohmmeter to the R x 1K scale.

4. Insert the ohmmeter test leads into the two connector pins of the thermistor connector.

5. Depending on the temperature, the meter should indicate within the approximate range, as shown in the chart below.

TEMPERATURE RESISTANCE TEMPERATURE RESISTANCE

(° F)

–5 41000-43600 4 5 4200-4500

0 31700-33600 50 3500-3700

5 24600-26200 55 2900-3100

10 19300-20500 60 2400-2550

15 15200-16200 65 2000-2150

20 12100-12900 7 0 1700-1800

25 9700-10300 75 1450-1525

30 7800-8300 8 0 1200-1300

32 7401 85 1050-1100

35 6300-6700 9 0 880-945

4 0 5200-5500

OHMS (APPROX.)

(° F)

OHMS (APPROX.)

WATER VALVE SOLENOID

Water Dispenser Solenoid

Ice Maker Solenoid

Refer to page 4-28 for the procedure for servicing the water valve.

1. Unplug refrigerator or disconnect power.

2. Disconnect the wire connectors from the water valve solenoid terminals.

3. Set the ohmmeter to the R x 1 scale.

4. Touch the ohmmeter test leads to the terminals of the ice maker solenoid. The meter should indicate approximately 160 to 170 Ω.

5. Touch the ohmmeter test leads to the terminals of the water dispenser solenoid. The meter should indicate approximately 330 to 355 Ω.

5-7

Electrical Shock Hazard

Voltage is present during these tests.

Pin 1

Motor Harness Connector

Press Tips Into Connector Slots Against Bare Wire Terminals To Check Voltages

Refer to page 4-26 for the procedure for servicing the auger motor.

CHECKING THE AUGER MOTOR

To check voltages* at the motor for crushed or cubed ice operation:

1. Open the freezer door and remove the ice bucket from the door.

2. Tape or block the freezer door switch closed.

NOTE: When you are instructed to make a reading at the motor connector, press the tips of the red and black test leads into the indicated harness connector slots so they touch the bare metal wire connectors (see the photos at the top of the right column). Reach around the front of the door and press the ice dispenser lever to activate the dispenser switch.

* Voltage readings may vary, depending on the supply

voltage, and the type of test equipment being used.

Test Leads

Press The Ice

Dispenser Lever

3. Press the Unlocked button on the water

and ice dispenser front panel.

4. Touch the AC meter test leads to wire harness pins 3 and 5, then press the ice dispenser lever. The meter should indicate 115 VAC.

5. Touch the DC meter’s black test lead to wire harness pin 6, and the red test lead to pin 7, then press the ice dispenser lever. The meter should indicate +115 VDC ±10%.

6. Press the Crushed ice button on the water and ice dispenser front panel.

Pin 1

Motor Connector

5-8

7. Touch the DC meter’s black test lead to wire harness pin 1, and the red test lead to pin 2, then press the ice dispenser lever. The meter should indicate +115 VDC ±10%.

9. Touch the DC meter’s red test lead to wire harness pin 1, and the black test lead to pin 2, then press the ice dispenser lever. The meter should indicate +115 VDC ±10%.

8. Press the Cube ice button on the water

and ice dispenser front panel.

+115 VDC

–115 VDC

Neutral

L1 (115 VAC)

Motor (115 VDC)

Wire Harness Pinouts

10. Remove the tape from the door switch.

To Switch Pack (OR/BU)

To Switch Pack (PK/BK)

(WH)

No Connection

(BU)

From Switch Pack (RD/WH)

From Switch Pack (BR/WH)

5-9

Electrical Shock Hazard

Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock.

ICE MAKER INLET HEATED FILL TUBE

Refer to page 4-8 for the procedure for servicing the ice maker inlet heated fill tube.

NOTE: The heated fill tube will be energized for 90 minutes after each ice maker harvest and fill.

1. Unplug refrigerator or disconnect power.

2. Disconnect the ice maker inlet heated fill tube wire connector from the main harness.

3. Set the ohmmeter to the R x 1K scale.

4. Insert the ohmmeter test leads into the two connector pins of the ice maker inlet heated fill tube connector. The meter should indicate approximately 7200 Ω.

MEAT PAN AIR BAFFLE MOTOR AND THERMISTOR

Meat Pan Air Baffle Assembly

Thermistor Connector

4 Connector

Harness

Assembly

Harness Connector Here

Pin 4

Refer to page 4-20 for the procedure for servicing the meat pan air baffle and thermistor.

1. Unplug refrigerator or disconnect power.

2. Disconnect the meat pan air baffle motor and the thermistor wire connectors from the main harness.

3. Set the ohmmeter to the R x 1K scale.

4. Touch the ohmmeter test leads to connector pins 5 and 6 of the meat pan air baffle motor. The meter should indicate approximately 8450 Ω ±6%.

5. Touch the ohmmeter test leads to the two connector pins of the meat pan air baffle motor thermistor. The meter should indicate as shown in the chart.

5-10

TEMPERATURE RESISTANCE TEMPERATURE RESISTANCE

(° F)

–5 25900-27500 4 5 5930-6300

0 22100-23500 50 5190-5510

5 18900-20000 55 4550-4830

10 16200-17200 60 4000-4240

15 13900-14800 6 5 3520-3730

20 12000-12800 7 0 3100-3300

25 10400-11000 7 5 2740-2910

30 8990-9550 80 2430-2580

32 8750 85 2160-2290

35 7800-8290 90 1920-2030

4 0 6800-7220

OHMS (APPROX.)

(° F)

OHMS (APPROX.)

DIAGNOSTICS & TROUBLESHOOTING

DIAGNOSTICS

Warmer

Power

On/Off

Colder

FREEZER REFRIGERATOR

SELECT

PRE-DIAGNOSTICS CHECKS

• Confirm the refrigerator and freezer temperatures before beginning other checks.

• See if the compressor, evaporator, and condenser fans are running.

• Check the position of the air door.

DIAGNOSTICS MODE

The Diagnostics Mode is used to:

• Check the refrigerator & freezer thermistors.

• Operate the evaporator fan motor at 3000 rpm.

• Operate the condenser fan motor and compressor.

• Check the defrost bimetal and heater.

To enter the Diagnostics Mode, the control must be turned on, and be in a normal cooling mode.

Both the Power On/Off and the Water Filter Reset keys must be functional. The refrigerator display shows the step number. The results of the checks are displayed on the water filter status indicator. After 20 minutes, the control will default from the Diagnostics Mode to a normal cooling mode.

Warmer

WATER FILTER

°C

PERCENT LEFT

Colder

To enter the diagnostics mode:

• Press and hold the Water Filter Reset keypad, and then immediately press and hold the Power keypad. Continue to press both keypads for 3 seconds, or until you hear a beep.

To advance the diagnostics sequence:

• To advance to the next step in the sequence, press and hold the Water Filter Reset key for 2 seconds, or until you hear a beep. The Diagnostics Chart on the next page shows the step number and the component being tested in each step.

SERVICE TIP: If the control does not respond, it may be necessary to remove power from the entire appliance for a few seconds. Reapply power and perform the service diagnostics routine again to verify that the control is working properly.

RESET

6-1

SERVICE DIAGNOSTICS MODE CHART

Step No.

Component

Tested

Freezer

Thermistor

Refrigerator

Thermistor

Evaporator

Fan Motor

Condenser

Fan Motor

Compressor

Suggested Diagnostics Routine

Step 1 and Step 2 are internal board tests, which means the main controller board will check the resistance value of each thermistor and display the results on the water filter status indicator.

Step 3 is an internal board test, which means that the main control board will automatically verify if the evaporator fan motor is working properly. In step 3, the evaproator fan motor will automatically have its speed set to run at 2500 rpm. If the motor does not reach this pre-selected speed, the WFI display will indicate “02.”

Step 4 is a visual inspection test. When step 4 is selected, if the motor is not functioning, verify that 120 VAC is between line and neutral at the condenser fan motor connection (white/red and white wires).

Step 5 should turn on the compressor within a 7 second window and will run at full speed, 4500 rpm. NOTE: If the compressor does not turn on during this step, wait 7 minutes, and recheck the compressor.

Water Filter Component

Status Indicator

01 Pass 02 Thermistor Open 03 Thermistor Short

01 Fan Motor On /

Speed OK

02 Fan Motor On /

Improper Speed

01 Condenser Fan

Motor Eneregized

01 Commpressor On /

Speed OK

02 Compressor Off

Air Baffle

Motor

Defrost Heater

& Bimetal

Step 6 is a visual inspection test. When step 6 is selected, if the damper motor is operating correctly, the damper will attempt to open fully.

Step 7 is a visual inspection test. When step 7 is selected, the heater will energize if the bimetal is closed, and the WFI display will indicate “01.” If the heater does not energize, the bimetal may be open, and will need to be bypassed for the heater to operate.

WARNING: If the bimetal is bypassed for testing (if applicable), do not overheat the evaporator area.

WATER FILTER INPUT (WFI) TEST

To confirm that the water valves are being monitored by the WFI control, follow the procedures listed:

Testing The Dispenser Valve Input

1. Open the refrigerator door.

2. Depress the refrigerator light switch.

01 Air Door Open

01 Defrost Heater

Energized / Bimetal Closed

02 Defrost Heater

Energized / Bimetal Open

5. Read the WFI display. “00” indicates a normal input.

Testing The Ice maker Valve Input

1. Open the refrigerator door.

2. Depress the refrigerator light switch.

3. Activate the ice maker and wait for a water fill.

3. Place a container under the water spout.

4. Activate the water dispenser.

4. Read the WFI display during the fill. “99” indicates a normal input.

6-2

ELECTRONIC TEMPERATURE-CONTROLLED MEAT PAN DIAGNOSTICS

Before entering the Service Diagnostics, lift the shelf so that you can view the air baffle.

To enter into Service Diagnostics Mode, press and hold the Fresh Produce and Meats buttons for at least 4 seconds, and then release the buttons. The buzzer will beep 3 times, and the control will enter Step 1 of the “Service Diagnostics Mode.”

Press the Various Cheeses button to advance to each of the remaining steps.

To exit the “Service Diagnostics Mode” while in step 4, press and release the Various Cheeses button. The buzzer will beep, and the

If all of the tests pass, the control will return to Various Cheeses mode. If any of the tests fail, the succeeding tests do not need to be performed, and the LED corresponding to the failed step will blink.

A “fast blink” LED will repeatedly turn on and off for 0.6 seconds.

A “slow blink” LED will repeatedly turn on and off for 0.2 seconds.

NOTE: If the time elapsed exceeds 20 minutes while in the Diagnostics Mode, the mode will be exited, and the Various Cheeses mode will be entered.

control will enter the Various Cheeses mode.

Step # Component Description LED Test Results LED Display

1 Pan Thermistor Various Cheeses Pass LED on solid

Fail - Open Slow blink Fail - Shorted Fast Blink

2 Evap Thermistor Fresh Produce Pass LED on solid

Fail - Open Slow Blink Fail - Shorted Fast Blink

3 Open Air Baffle Fresh Herbs Pass LED on solid

Fail – Baffle did not cycle LED blinking

4 Close Air Baffle Meats Pass LED on solid

Fail – Baffle did not cycle LED blinking

6-3

TROUBLESHOOTING CHART

PROBLEM POSSIBLE CAUSE TEST PROCEDURE/ACTION

Refrigerator

Compartment

(RC) Too Warm

Refrigerator

Compartment

(RC) Too Cold

RC control set too warm. RC thermistor. Refrigerator light not shutting off. Air door stuck closed or inoperative. Blocked air flow.

Warm FC temperature.

Reversed air door wiring. Evaporator fan not running or not running

up to speed. Frost blocking evaporator air flow. Main control board. Compressor not operational. Condenser fan not operational. Inverter not operational.

RC control set too cold. RC thermistor. Air door stuck open. Air door seal missing, damaged or re-

versed. Reversed thermistor wiring. Main control board.

See “Control Setting” section. See “RC Thermistor” section. See “Door Switch” section. See “Air Door” section. Check for any restriction to the airflow in the

RC and FC. Cold air for the RC is drawn from the FC.

Check for proper FC temperatures (see “FC Compartment Too Warm”).

See “Air Door” section. See “Evaporator Fan” section.

See “Evaporator Fan” section. See “Main Control Board” section. See “Compressor” section. See “Condenser Fan” section. See “Inverter” section.

See “Control Setting” section. See “RC Thermistor” section. See “Air Door” section. A missing seal will let cold evaporator air

bypass the air door. See “RC Thermistor” section. See “Main Control Board” section.

Freezer Compartment (FC)

Too Warm

Freezer

Compartment

(FC) Too Cold

“Call Service”

Icon Lights

And Alarm Is

Sounding

FC control set too warm. FC thermistor. Freezer light not shutting off. Evaporator fan not running or not running

up to speed. Condenser fan not running. Frost blocking evaporator air flow. Thermistor wires reversed. Main control board. Compressor not operational. Inverter not operational.

FC control set too cold. Temperatures are –5°F in the FC and

34°F in the RC.

FC thermistor. Open evaporator fan feedback. Main control board.

Open evaporator fan feedback. RC is over 48°F or the FC is over 15°F for

more than 3 hours. Failed thermistors.

See “Control Setting” section. See “FC Thermistor” section. See “Door Switch” section. See “Evaporator Fan” section.

See “Condenser Fan” section. See “Evaporator Fan” section. See “FC Thermistor” section. See “Main Control Board” section. See “Compressor” section. See “Inverter” section.

See “Control Setting” section. Refrigerator operating in the “Max Cool”

mode. Press the “Max Cool” button to return to normal operation.

See “FC Thermistor” section. See “Evaporator Fan” section. See “Main Control Board” section.

See “Evaporator Fan” section. See “Over Temperature” section.

See “RC & FC Thermistor” sections.

RC = Refrigerator Compartment FC = Freezer Compartment

6-4

PROBLEM POSSIBLE CAUSE TEST PROCEDURE/ACTION

No Display, No

Interior Lights,

Can Not Change

Settings

No Display, Can

Not Change

Settings

Product Is Noisy

Overtemp Alarm

Holiday Mode.

The FC or RC doors have been open for more than ten minutes.

Door light switch problem.

If the display & the evaporator fan do not operate, the evaporator fan jumper wiring is incorrect.

Touch / display board has lost power connection.

Main control board is not supplying power to the user interface.

The noise is coming from the freezer section. The evaporator fan motor is binding, hitting, misaligned, or vibrating.

The noise is coming from the unit compartment section. Condenser fan blade is hitting.

The noise is coming from the unit compartment section. Compressor is noisy.

Temperatures are 48°F in the RC, or 15°F in the FC for more than 1-1/2 hrs.

The compressor is not operating. The inverter is not operating.

Press the “Holiday Mode” button to return to normal mode.

See “Door Open” section.

See “Door Switch” section.

See “Evaporator Fan” section.

See “Touch/ Display Board” section.

See “Main Control Board” section.

See “Evaporator Fan” section.

See “Condenser Fan” section.

See “Compressor” section.

See “Over Temperature” section.

See “Compressor” section See “Inverter” section.

Product Does

Not Run

Indicator Light &

Alarm Continue

To Activate After

Service Has

Been Performed

RC = Refrigerator Compartment FC = Freezer Compartment

Control powered off?

No power to the control board.

The indicator lights have not been reset.

Press the “Power on/off” button for 2 seconds. If there is no response, unplug the refrigerator for 30 seconds. Plug in refrigerator and check for normal operation. Failed control board. Run diagnostic test.

Verify power to the control board by using the diagram.

See “Alarm Reset” section.

6-5

COMPONENT SYMPTOM TEST PROCEDURE/ACTION

Run control diagnostics to check the air door operation in step 6. A 12 volt square wave is supplied to the air door in a series of short pulses. It is not possible to obtain a reliable voltage reading with a VOM. Check for the air door binding with the cover. Check the resistance of the air door motor on the air door connector. The yellow wire to the red wire should have a resistance reading of 375 - 425 Ω. The white wire to the blue wire should have a resistance reading of RD 375 - 425 Ω.

Reversed wiring at the air door or at the control board will cause the air door to operate exactly contrary to the needs of the refrigerator. Verify the air door and cabinet wiring is correct. DO NOT DISCONNECT

THE AIR DOOR WHILE THE CYCLE IS IN PROGRESS.

Look for any kind of mechanical blockage.

Pressing the OVER TEMPERATURE RESET will shut off the audio alarm, but this does not affect the indicator light the first time the OVER TEMPERATURE RESET is pressed. The indicator light will shut off once the OVER TEMPERATURE RESET is pressed the second time. The audio alarm will not sound again for the current condition that caused the alarm until a new condition occurs or until a Master Alarm Reset is performed. A Master Alarm Reset can be performed by pressing the POWER (ON/OFF) twice or by turning the power to the refrigerator off and on again. The indicator light will reactivate after the OVER TEMPERATURE RESET is pressed if the condition that caused the alarm is still present.

Air Door

Alarm Reset

Stuck closed.

Inoperative.

Reversed wiring.

Stuck open.

The indicator lights and alarm continue to activate after service has been performed.

Both thermistors have failed.

Evaporator fan motor feedback signal lost.

Call Service

Alarm

RC = Refrigerator Compartment FC = Freezer Compartment

An over-temp condition occurs for 3 hrs or more.

Call service indicator only, no audible alarm.

Call service is a visual and audio signal that alerts the customer that the refrigerator needs service but only for specific failure modes, none of which are necessarily related to performance. Run control diagnostics to check the operation of components. If a particular component is not operating properly, see that individual component’s section.

The alarm needs to be reset. Press the OVER TEMPERATURE RESET to deactivate the call service indicator (see “Alarm Reset” section).

6-6

COMPONENT SYMPTOM

Inoperative.

Compressor

Noisy.

Not operational / not running.

Condenser Fan

Blocked.

TEST PROCEDURE/ACTION

Check to make sure that it is not on the 7 minute delay. Ohm the compressor. The compressor should be 6 to 7 Ω. If no resistance is present, replace compressor.

See “Inverter” section to check the inverter. If a mechanical clanking noise is evident,

replace the compressor. If the consumer is complaining about varying sound level, explain the variable speed operation of the compressor to them.

Run control diagnostics to check condenser fan operation in step 4. The condenser fan runs independently of the compressor but is a constant speed DC motor. Voltage is supplied to the condenser fan by a relay on main control board. Voltage should be present at pin 1 of connector 6 of the main control board during operation (see the diagram on page 7-2).

Control Setting

Door Open Alarm

Door Switch

Noisy.

RC control set too warm.

FC control set too warm.

RC control set too cold.

FC control set too cold.

No display, no interior lights.

RC control set too warm.

FC control set too warm.

Check for blade hits. Check the mounting system.

Change to a colder temperature setting. A mid point setting will deliver approximately 37°F in the RC, and 0°F in the FC in most usage and ambient conditions.

Change to a warmer temperature setting. A mid point setting will deliver approximately 37°F in the RC and 0°F in the FC in most usage and ambient conditions.

If either door is open for more than ten minutes, the control will turn off the light circuit. This includes the control user interface in the RC. The user interface is powered down when the RC door is closed and is inactive. The Door Open indicator light will flash and an audio alarm will sound. The probable cause is a failure of the light switch actuator to cause the switch to change position.

The actuating mechanism of the light switch is attached directly to the top door hinge pin. If the door is set low the actuator blade my not contact the rocker style light switch. The quickest repair is to raise the affected door until the mechanism operates properly. Align the second door to match the first. Make sure the metal is clean.

RC = Refrigerator Compartment FC = Freezer Compartment

6-7

COMPONENT SYMPTOM

Not running.

Not running up to speed.

Open evaporator fan feedback circuit.

Evaporator Fan

Frost blocking evaporator air flow.

Improper wiring.

Noisy.

TEST PROCEDURE/ACTION

Run control diagnostics to check the evaporator fan operation in step 3. The evaporator fan receives voltage from the main control board. Voltage should be present at pins 1, 2, 6, & 7 of connector 7 of the main control board during operation (see the diagram on page 7-2). A failed evaporator fan motor or any condition that can mimic a failed motor will cause the control to run the compressor 100% at 4500 rpm. If voltage is still present and the evaporator fan is still not operating, verify evaporator fan jumper harness wiring (see “Evaporator Fan-Improper Wiring” section below). If corrosion is present on the terminals, replace the evaporator fan jumper harness.

Run control diagnostics to check the defrost system operation in step 7. The test mode can be used for a manual defrost cycle to clear the coil. A frost load as the result of one or more doors being left open and can take several days to clear.

Verify the wires connecting from the square connector of the evaporator fan jumper harness to the bimetal harness. WH/V to WH, YL/BU to BU, YL/BK to YL, and YL/RD to RD. If wiring is incorrect, order evaporator fan kit.

Binding—Check for the evap fan to be misaligned and for the wire harness to be pulling on the evap fan.

Hitting—Check for the fan blade hitting the scroll and realign.

Inoperative.

Freezer (FC)

Thermistor

Reversed wiring.

Not operational.

Inverter

Compressor not operational.

RC = Refrigerator Compartment FC = Freezer Compartment

Check wires and connectors. Thermistor may be out of range. Run control diagnostics to check the FC thermistor operation in step

1. Check resistance given in the diagram on page 7-2. If the thermistor circuit is open, the control will initiate default run time to hold temps until service can be performed.

Although extremely remote, the thermistor wires can be reversed in the connector at the main control boards. A quick way to confirm this is to remove the FC thermistor, initiate control diagnostics and look for a “2” in step 1, which is an indication of an open circuit for the FC thermistor.

Check for voltage from the main control board to the inverter: 3 to 6 VDC on pins 3 & 8 of connector 7.

Check for voltage from the inverter to the compressor. Input voltage to compressor is

0.02 to 5.5 VDC. Ohm the compressor. Resistance should be 6 to 7 Ω.

6-8

COMPONENT SYMPTOM

TEST PROCEDURE/ACTION

Main Control

Board

Touch / Display

Board

FC or RC compartment too warm.

FC or RC compartment too cold.

No display, no interior lights, can not change settings.

Product does not run.

Evaporator fan motor does not run.

No display, no interior lights, can not change settings.

Check for loose terminals or connectors at the main control board. Voltage should be present at the respective pin of the respective connector of the main control board during operation (see the diagram on page 7-2 for component and pin locations). If the proper voltage to the component in question is not present from the respective pin location on the main control board during operation, replace the main control board.

Voltage should be present at pins 2 & 3 and 4 & 5 of connector 5 of the main control board during operation (see the diagram on page 7-2). This connection supplies the main control board with power. If the proper voltage to the main control board is not present, check cabinet wiring and power cord. If the proper voltage to the main control board is present and the product still does not run, replace the main control board.

Jump the red to yellow wire in the evaporator fan motor harness to check the 12 VDC fan operation. If the fan runs after jumping the wire, replace the main control board.

Verify Touch/display board connection and wiring to the cabinet.

Overtemp Alarm

Refrigerator (RC)

Thermistor

Temperatures are 48°F in the RC, or 15°F in the FC for more than 1-1/2 hrs.

Inoperative.

Reversed wiring.

The overtemp alarm is a visual and audio signal that alerts the customer to unacceptably warm temperatures in either compartment for more than 1-1/2 hours. The trigger points are 48°F in the RC, or 15°F in the FC. The corresponding temperature display will flash to indicate the problem compartment. The audio alarm stops if the temperatures return to normal but the visual alarm will continue to flash until reset.

Check wires and connectors. Thermistor may be out of range. Run control diagnostics to check the RC thermistor operation in step

2. Check resistance given in the diagram on page 7-2. If the thermister circuit is open the control will initiate default run time to hold temps until service can be performed.

Although extremely remote, the thermistor wires can be reversed in the connector at the main control boards. A quick way to confirm this is to remove the RC thermistor, initiate control diagnostics and look for a “2” in step 2, which is an indication of an open circuit for the RC thermistor.

RC = Refrigerator Compartment FC = Freezer Compartment

6-9

— NOTES —

6-10

WIRING DIAGRAMS & STRIP CIRCUITS

SXS NON DISPENSER WIRING DIAGRAM

115 VOLTS

60 HZ

7-1

SXS DISPENSER WIRING DIAGRAM

7-2

BOTTOM MOUNT WIRING DIAGRAM

7-3

MAIN CONTROL BOARD BLOCK DIAGRAM

7-4

ELECTRONIC TEMPERATURE-CONTROLLED

MEAT PAN DIAGRAM

7-5

SXS TUBING JOINT DIAGRAM

Key Number Description

1 Compressor Discharge 2 Discharge Process Tube 3 Crimp & Fuse 4 Drain Pan In 5 Drain Pan Out 6 Transition Tube to Restrictor 7 Condenser Outlet (Copper to steel) 8 Condenser Inlet (Copper to steel) 9 Drier Top

Key Number Description

1 0 Drier Bottom 1 1 Evaporator Inlet 1 2 Evaporator Outlet 1 3 Compressor Suction line 1 4 Compressor Process Stub 1 5 Crimp & Fuse 1 6 Suction Line to HT Exchanger 1 7 Heat Loop In 1 8 Heat Loop Out

7-6

BOTTOM MOUNT TUBING JOINT DIAGRAM

Key Number Description

1 Compressor Discharge 2 Discharge Process Tube 3 Crimp & Fuse 4 Drain Pan Out 5 Heat Loop Out 6 Transition Tube to Restrictor 7 Condenser Outlet (Copper to steel) 8 Condenser Inlet (Copper to steel) 9 Drier Top

Key Number Description

1 0 Drier Bottom 1 1 Evaporator Inlet 1 2 Evaporator Outlet 1 3 Compressor Suction line 1 4 Compressor Process Stub 1 5 Crimp & Fuse 1 6 Suction Line to HT Exchanger 1 7 Discharge Transition to HT Loop Transition 1 8 Drain pan out to Condenser Transition 1 9 Heat loop In

7-7

COOLING CIRCUITS

COMPRESSOR

POWER ON/OFF

STRIP CIRCUITS

COMPRESSOR

INVERTER

BOARD

RD/WH

P7-3P7-8

POWER ON/OFF

CONDENSER FAN MOTOR

POWER ON/OFF

P5-2

ELECTRONIC

CONTROL

BOARD

THERMISTOR

ELECTRONIC

CONTROL

BOARD

P6-1

P5-3

WH/RD

CONDENSER

FAN MOTOR

POWER ON/OFF

7-8

EVAPORATOR FAN MOTOR

POWER ON/OFF

DEFROST CYCLE

DEFROST HEATER

POWER ON/OFF

P5-2

ELECTRONIC CONTROL

BOARD

P7-4 P7-5

YL/BU

ELECTRONIC

CONTROL

P7-9

YL/RD

BOARD

P7-10

WH/VT

YL/BK

P6-4

P5-3

BIMETAL

EVAPORATOR

FAN MOTOR

DEFROST

HEATER

POWER ON/OFF

ELECTRONIC CONTROL ENABLED CIRCUITS

ICE MAKER

POWER ON/OFF

P5-2

ELECTRONIC

CONTROL

BOARD

P6-5

7-9

LB/BK

ICE MAKER

MODULE

POWER ON/OFF

REFRIGERATOR LIGHT

POWER ON/OFF

FREEZER LIGHT

POWER ON/OFF

DOOR SWITCH

WH/TN

P4-1

P4-2

ELECTRONIC

CONTROL

BOARD

ELECTRONIC

CONTROL

BOARD

POWER ON/OFF

7-10

TECH TIPS

SERVICING THE ICE BIN AUGER ASSEMBLY

1. Open the freezer door.

2. Remove the ice bin from the door by pressing in on the release button and lifting it off the platform.

3. Place the ice bin on a work surface with the bottom facing up.

Release Button

Screw, Coupler, &

Flat Washer

Screwdriver Handle

AUGER DISASSEMBLY

1. Insert a screwdriver handle into the auger blade area to prevent the blades from turning when you remove the screw in the next step (see the photo at the top of the right column).

2 Remove the screw from the auger assem-

bly coupling, and pull the coupler and flat washer off the end of the shaft. NOTE: The screw may be difficult to remove if there is sealant applied to the threads.

3. Turn the ice bin over to its upright position.

4. Remove the two screws from the auger mounting plate.

Auger Mounting

Plate Screws

Continued on the next page.

8-1

5. IMPORTANT: The auger assembly is now

loose and the ice crusher blades and spacers will slide off the auger shaft if you do not hold them in place. Reach inside the bin and lift the mounting plate just enough so you can grasp the end of the auger shaft, then lift the auger assembly out of the bin, and lay it on the work surface.

Auger Assembly

LATCH ASSEMBLY REMOVAL

1. Use a small screwdriver, and insert the blade under the locking tab of the latching arm.

2. Pull on the latching arm while prying up on the locking tab, and align the slots in the arm with the tabs of the bin, then lift the arm, and remove it. NOTE: The latching arm spring and pushbutton will come loose when the arm is removed.

Pull On Latching Arm

Locking Tab

Ta b

Slot

6. Remove the auger components from the auger shaft and lay them, in order, on your work surface for easy reassembly.

REASSEMBLY NOTE: Make sure that you position the mounting plate and the blade assembly (oval inset) on the auger shaft properly (see the photo above).

Blade Assembly

Shoulder Spacer

6 Spacers

Latching Arm

Tab & Slot Aligned

Spring

Pushbutton

Blade C

Nylon Flat Washer

Blade B

Blade A

Mounting Plate

Spreader

Auger

8-2

— NOTES —

8-3

— NOTES —

8-4

PRODUCT SPECIFICATIONS

AND

WARRANTY INFORMATION SOURCES

IN THE UNITED STATES:

FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL:

FOR WHIRLPOOL PRODUCTS: 1-800-253-1301 FOR KITCHENAID PRODUCTS: 1-800-422-1230 FOR ROPER PRODUCTS: 1-800-447-6737

FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER’S HOME CALL:

THE TECHNICAL ASSISTANCE LINE: 1-800-253-2870

HAVE YOUR STORE NUMBER READY TO IDENTIFY YOU AS AN

AUTHORIZED SERVICER

FOR LITERATURE ORDERS:

PHONE: 1-800-851-4605

FOR TECHNICAL INFORMATION AND SERVICE POINTERS:

www.servicematters.com

IN CANADA:

FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL:

1-800-461-5681

FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER’S HOME CALL:

THE TECHNICAL ASSISTANCE LINE: 1-800-488-4791

HAVE YOUR STORE NUMBER READY TO IDENTIFY YOU AS AN

AUTHORIZED SERVICER

KitchenAid 2003 M Technical Education

Specifications and Main Features

Frequently Asked Questions

User Manual