technical service guide - affordable appliance folder/gts ets hts pts...technical service guide ge...

PUB #31-9077 05/01

MODEL SERIES:

TECHNICAL SERVICE GUIDE

GE Consumer Home Services Training

LTMNF 22 and 25 Cubic FootGE/Hotpoint/Profile

Arctica Refrigerators with ElectronicControls

ETS22GTS22HTS22PTS22PTS25STS22

IMPORTANT SAFETY NOTICEThe information in this service guide is intended for use by

individuals possessing adequate backgrounds of electrical,electronic, and mechanical experience. Any attempt to repair amajor appliance may result in personal injury and proper tydamage. The manufacturer or seller cannot be responsible for theinterpretation of this information, nor can it assume any liability inconnection with its use.

WARNINGTo avoid personal injury, disconnect power before servicing this

product. If electrical power is required for diagnosis or testpurposes, disconnect the power immediately after performing thenecessary checks.

RECONNECT ALL GROUNDING DEVICESIf grounding wires, screws, straps, clips, nuts, or washers used

to complete a path to ground are removed for service, they mustbe returned to their original position and properly fastened.

GE Consumer Home Services TrainingTechnical Service Guide

Copyright © 2001

All rights reserved. This service guide may not be reproduced in whole or in partin any form without written permission from the General Electric Company.

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TABLE OF CONTENTSTECHNICAL DATA ........................................................................................................................ 2MODEL NOMENCLATURE .......................................................................................................... 3SERIAL NUMBERS ...................................................................................................................... 4WARRANTY .................................................................................................................................. 5RATING PLATE............................................................................................................................ 6MINI-MANUAL ............................................................................................................................. 6DOOR REVERSAL ....................................................................................................................... 6SHELVES AND BINS .................................................................................................................. 11CABINET CONSTRUCTION ....................................................................................................... 15

Cabinet .................................................................................................................................. 15Base Grille ............................................................................................................................. 15Doors ..................................................................................................................................... 15Door Gaskets ........................................................................................................................ 16Rollers ................................................................................................................................... 16

ICEMAKER ................................................................................................................................. 17Water Valve .......................................................................................................................... 17

AIRFLOW .................................................................................................................................... 18Freezer Compartment ........................................................................................................... 18Fresh Food Compartment .................................................................................................... 18Evaporator Fan ..................................................................................................................... 19Condenser Fan ..................................................................................................................... 22

DEFROST SYSTEM ................................................................................................................... 23Adaptive Defrost ................................................................................................................... 23Normal Operating Characteristics ....................................................................................... 24Abnormal Operating Characteristics .................................................................................. 24Liner Protection Mode .......................................................................................................... 24Defrost Heater ....................................................................................................................... 25Evaporator Thermistor ......................................................................................................... 25Defrost Overtemperature Thermostat ................................................................................. 25Defrost Probes ..................................................................................................................... 26

CONTROL SYSTEM ................................................................................................................... 27Control Console .................................................................................................................... 27Temperature Encoder ........................................................................................................... 27Temperature Touch Panel .................................................................................................... 27Control Board ....................................................................................................................... 28Thermistors ........................................................................................................................... 35

ELECTRICAL SYSTEM .............................................................................................................. 36Door Switches....................................................................................................................... 36Schematic .............................................................................................................................. 36Wiring Diagram ..................................................................................................................... 37

REFRIGERATION SYSTEM ....................................................................................................... 38Compressor .......................................................................................................................... 38No-Clean Condenser ............................................................................................................ 38Condenser Loop ................................................................................................................... 38Dryer ...................................................................................................................................... 38Evaporator............................................................................................................................. 38Refrigerant Charge ............................................................................................................... 39

COMPONENT AND CONNECTOR LOCATOR VIEWS .............................................................. 40FLOWCHARTS ........................................................................................................................... 45

– 2 –

TMNF - 22 238C1616P001

DISCONNECT POWER CORD BEFORE SERVICINGIMPORTANT-RECONNECT ALL GROUNDING DEVICESAll parts of this appliance capable of conductingelectrical current are grounded. If grounding wires,screws, straps, clips, nuts or washers used tocomplete a path to ground are removed for service,they must be returned to their original position andproperly fastened.

ELECTRICAL SPECIFICATIONSTemperature Control Position 5) ................ 7-(-11 )°FDefrost Control ............................................ 60hrs @ 45 min

w/ no door openingsOvertemperature Thermostat ...................... 140-110°FDefrost Thermistor ...................................... 65°FElectrical Rating: 115V. AC 60 Hz ............... 11.6 AmpMaximum Current Leakage ......................... 0.75 mA.Maximum Ground Path Resistance ............. 0.14 OhmsEnergy Consumption .................................. 40 KWH/mo.

NO LOAD PERFORMANCEControl Position MID/MIDand Ambient of: 70°F 90°F

Fresh Food, °F ...........................................34-40 34-40Frozen Food, °F ......................................... (-3) 3 (-3) 3Run Time, % ..............................................<45% <70%

REFRIGERATION SYSTEMRefrigerant Charge (R134a) ....................... 4.5 ouncesCompressor ................................................ 762 BTU/hrMinimum Compressor Capacity .................. 22 inchesMinimum Equalized Pressure@ 70°F ......................................................... 30 PSIG@ 90°F ......................................................... 38.5 PSIG

IMPORTANT SAFETY NOTICEThis information is intended for use by individualspossessing adequate backgrounds of electrical,electronic and mechanical experience. Any attemptto repair a major appliance may result in personalinjury and property damage. The manufacturer orseller cannot be responsible for the interpretationof this information, nor can it assume any liabilityin connection with its use.

INSTALLATIONClearance must be provided for air circulationAT TOP ....................................................................... 1”AT SIDES .................................................................... 1/8”AT REAR .................................................................... 1”

AIR FLOW

REPLACEMENT PARTSBoard Asm. Temperature Control ........................... wr55x10085Relay (PTCR) .......................................................... wr07x0240Overload ................................................................. wr08x10015Run Capacitor (15 uF) ............................................ wr62x10079Defrost Thermostat ................................................ wr50x10015Defrost Heater Asm. ............................................... wr51x10038Condenser Fan Motor ............................................. wr60x10053Evaporator Fan Motor ............................................. wr60x10043Board Asm. Main Control ........................................ wr55x10086Thermistor (FF) ....................................................... wr55x10087Thermistor (FZ) ...................................................... wr55x10088Thermistor (Evap.) .................................................. wr55x10089

Technical Data

COLD AIR MIXED AIR WARMER AIR

– 3 –

Model series ETS, GTS, HTS, and STS 22-cubic foot refrigerators, and PTS 22-and 25-cubic foot refrigerators are energy-efficient refrigerators that will provide the consumer witha quiet-operating, fully featured product.

G T S 22 I B M A F WWBrand/Product Exterior colorG - GE WW - White on whiteH - Hotpoint AA - Almond on almondP - Profile BB - Black on blackE - Eterna CC - Bisque on BisqueS - GE Select WH - White on black AD - Almond on Black

ConfigurationS - Side by Side Door TypeT - Top Mount F - Flat R - Right door swing L - Left door swing

Depth/Power EngineeringS - Standard Depth A - Initial DesignT - Tropical B - 1st RevisionG - Global

Capacity Model Year(cubic feet) AHAM Rated Volume M - 2001

Interior Features/Shelves Icemaker/ExteriorA - Leader Wire B - Non DispenserD - Deluxe Wire IM ReadyI - Deluxe Glass D - Cubed ice/waterK - Spillproof/Slideout Glass E - Cubed/crushed waterM - Spillproof/Slideout Glass & Quickspace F - 6 Month filterQ - Showcase Derivative Cubed/crushedU - AVB Derivative G - 1 Year filterW - HPS Derivative Cubed/crushedX - Regional Derivative I - In-line filter/indicator Cubed/crushed/water

MODEL NOMENCLATURE

B - Non Dispenser IM ReadyD - Cubed Ice/WaterE - Cubed/Crushed WaterF - 6-Month Filter Cubed/CrushedG - 1-Year Filter Cubed/CrushedI - In-line Filter/Indicator Cubed/Crushed/Water

F - FlatR - RightL - Left Door Swing

WW - White on WhiteAA - Almond on AlmondBB - Black on BlackCC - Bisque on BisqueWH - White on BlackAD - Almond on Black

A - Initial DesignB - 1st Revision

– 4 –

SERIAL NUMBERS

The serial numbers for General Electric, Hotpoint, Profile, and Arctica refrigerators consists of twoletters, followed by six numerals. The two prefix letters of the serial number indicate the month andyear the product was manufactured. The year of manufacture does not correspond with the modelyear of the model number.

Refrigerators using a number four (4) as the first digit of the serial number are designated as Celyaproduction.

NAJ BEF RAM RPA YAM NUJ LUJ GUA PES TCO VON CED

0002 ZA ZD ZF ZG ZH ZL ZM ZR ZS ZT ZV ZZ

1002 AA AD AF AG AH AL AM AR AS AT AV AZ

2002 DA DD DF DG DH DL DM DR DS DT DV DZ

3002 FA FD FF FG FH FL FM FR FS FT FV FZ

4002 GA GD GF GG GH GL GM GR GS GT GV GZ

5002 HA HD HF HG HH HL HM HR HS HT HV HZ

6002 LA LD LF LG LH LL LM LR LS LT LV LZ

7002 MA MD MF MG MH ML MM MR MS MT MV MZ

8002 RA RD RF RG RH RL RM RR RS RT RV RZ

9002 SA SD DF SG SH SL SM SR SS ST SV SZ


1102 TA TD TF TG TH TL TM TR TS TT TV TZ

2102 VA VD VF VG VH VL VM VR VS VT VV VZ

3102 ZA ZD ZF ZG ZH ZL ZM ZR ZS ZT ZV ZZ

4102 AA AD AF AG AH AL AM AR AS AT AV AZ

5102 DA DD DF DG DH DL DM DR DS DT DV DZ

6102 FA FD FF FG FH FL FM FR FS FT FV FZ

7102 GA GD GF GG GH GL GM GR GS GT GV GZ

8102 HA HD HF HG HH HL HM HR HS HT HV HZ

9102 LA LD LF LG LH LL LM LR LS LT LV LZ

0202 MA MD MF MG MH ML MM MR MS MT MV MZ

1202 RA RD RF RG RH RL RM RR RS RT RV RZ


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Refrigerator Warranty. (For customers in the United States)

Service trips to your home to teach you how to use the product.

Improper installation.

Failure of the product if it is abused, misused, or used for other than the intended purpose or used commercially.

Loss of food due to spoilage.

Replacement of house fuses or resetting of circuitbreakers.

Damage to the product caused by accident, fire, floods or acts of God.

Incidental or consequential damage caused by possibledefects with this appliance.

This warranty is extended to the original purchaser and any succeeding owner for products purchased for homeuse within the USA. In Alaska, the warranty excludes the cost of shipping or service calls to your home.

Some states do not allow the exclusion or limitation of incidental or consequential damages. This warranty givesyou specific legal rights, and you may also have other rights which vary from state to state. To know what yourlegal rights are, consult your local or state consumer affairs office or your state’s Attorney General.

Warrantor: General Electric Company. Louisville, KY 40225

For The Period Of: GE Will Replace:

One Year Any part of the refrigerator (excluding water filter cartridge) which fails due to a defect inFrom the date of the materials or workmanship. During this full one-year warranty, GE will also provide, free of charge,original purchase all labor and in-home service to replace the defective part.

Five Years Any part of the sealed refrigerating system (the compressor, condenser, evaporator and allFrom the date of the connecting tubing) which fails due to a defect in materials or workmanship. During thisoriginal purchase five-year warranty, GE will also provide, free of charge, all labor and in-home service to replace

the defective part in the sealed refrigerating system.

All warranty service provided by our Factory Service Centers, or an authorized Customer Care® technician. To schedule service,on-line, 24 hours a day, contact us at www.GEAppliances.com, orcall 800-GE-CARES.

Staple your receipt here. Proof of the original purchase

date is needed to obtain serviceunder the warranty.

What GE Will Not Cover:

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RATING PLATEThe rating plate, located inside the refrigeratoron the upper left-hand side, contains the modeland serial numbers. Additionally, the rating platespecifies the minimum installation clearances,electrical voltage, frequency, maximumamperage rating, and refrigerant charge andtype.

MINI-MANUALThe mini-manual, located behind the base grille,is secured to the underside of the cabinet forshipping with a piece of tape. After referencingthe mini-manual, return it to its original locationfor future use.

DOOR REVERSALTorx head (T-20) screws are used to mount thetop, center, and bottom hinges to the cabinet.Mounting holes in the hinges are not elongated,and the hinges are not adjustable. Whenreinstalling the hinges, tighten screws firmly butavoid overtightening to prevent stripping.

Note:

• When reversing the door swing, read all instructions thoroughly before starting.

• When handling parts, use caution to avoid scratching paint.

• Sort screws to correspond with related parts and be certain to use the proper screw with each part.

• Place doors on a protected surface to prevent damage.

• Once the door reversal procedure has been initiated, do not move the cabinet until the procedure is complete.

• Unplug the refrigerator from its electrical outlet.

• Empty all door shelves, including the dairy compartment.

Rating Plate Location

Mini-Manual Located Under Base Grille

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Freezer Door

1. Tape freezer door shut with masking tape.Remove the hinge cover from the freezerdoor hinge (some models).

2. Remove 2 (T-20) Torx head screws and thetop hinge.

3. Remove the tape and tilt the door away fromthe cabinet. Lift the door off the center hingepin and place on a protected surface.

Fresh Food Door

1. Tape the fresh food door shut with maskingtape.

2. Remove the center hinge pin with a 3/4-in.socket.

3. Remove the tape and tilt the door away fromthe cabinet. Lift the door straight up and offthe bottom hinge and place on a protectedsurface.

Note: If the washer is not on the bottom hinge,check to see if it is stuck to the bottom of thedoor.

Reversing the Doors

1. Install the top hinge and screws on theopposite side of the cabinet. Do not tightenthe screws at this time.

2. Remove the base grille by pulling it straightout from the unit.

Note : If the washer is not on the bottom hinge,check to see if it is stuck to the bottom of thedoor.

3. Using a Torx driver, remove the screws andbottom hinge from the cabinet and install onthe opposite side of the cabinet.

Top Hinge

Hinge Pin

– 8 –

4. Cover the blade of a putty knife or small flatscrewdriver (to avoid scratching the paint)and use the edge to gently pry the color-matched screw cap off the screw heads.

Note: Keep the screws with the center hinge.These are longer screws and will be used wheninstalling the center hinge on the opposite sideof the cabinet.

5. Remove 3 Torx head screws and the centerhinge.

6. Remove the mullion cover using the puttyknife or screwdriver. Install the cover on theopposite side of the cabinet.

7. Install the center hinge with the three longscrews on the opposite side of the cabinet.Replace the color-matched cap.

8. Move the metal door stop and any associatedscrews to the opposite side of the door.

Fresh Food Door Handles

1. Remove the plug button by carefully pryingunderneath the edge with a small, flat blade.Remove the screw that fastens the bottom ofthe handle to the door. Remove the lowerpart of the long handle (some models).

2. Remove the 2 screws and the handle fromthe top of the door.

Screw Cap

Mullion Cover

Handle Plug

HandlePlug

HandlePlug

Pin

Hole

ShortScrew

Short HandleLong Handle

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3. After the handle has been removed, movethe small plug buttons to the opposite side ofthe door and install in the screw holes.

4. Move the large plug button to the oppositeside of the door and install in the thimblehole.

5. Move the front door plug button to theopposite side of the door and install in thescrew hole.

Small PlugButtons

Plug Button

Button

Long Handle

HandlePlug

HandlePlug

Pin

Hole

Short Handle6. Install the handle to the opposite side of the

door with 3 screws.

Note: If equipped with long handle, ensure thatpin in the lower part of the handle is installed inbottom of the door.

7. Install handle plug.

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Freezer Door Handles

1. Remove the screws and handle from thefreezer door.

2. Move the plug button to the opposite side ofthe door and install in the handle screw hole.

3. Install the handle to the opposite side of thedoor using the holes closest to the edge ofthe door.

Rehanging The Doors

1. Lower the fresh food door onto the bottomhinge pin.

Note: Ensure that the washer is on bottomhinge pin.

2. Line up the fresh food door with the centerhinge bracket. Install the hinge pin in thecenter hinge bracket and door with a 3/4-in.socket. Tighten the hinge pin in the centerhinge bracket.

3. Install the freezer door onto the center hingepin and upper hinge (screws loose). Supportthe door on the handle side and make surethe door is straight and the gap between thedoors is even across the front. Whileholding the door straight, tighten the tophinge screws.

Center Hinge Pin

Center HingeBracket

Hinge Pin

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To remove:

Tilt the shelf up at the front.

Lift the shelf up at the back and bringthe shelf out.

To replace:

While tilting the shelf up, insert the tophook at the back of the shelf in a slot onthe track.

Lower the front of the shelf until thebottom of the shelf locks into place.

Spillproof Shelves (on some models)

Spillproof shelves have special edges to help prevent spills from dripping to lowershelves. To remove or replace the shelves,see Rearranging the Shelves.

Some models have wire shelves thatcan be adjusted in the same manner.

To remove:

Lift up the left side of the shelf and slideit left into the center of the shelfsupports.

Rotate the right side of the shelf up andout of the shelf supports.

Refrigerator Compartment

Freezer Compartment

To replace:

Holding the shelf diagonally, insert theleft end of the shelf into the center ofthe shelf supports on the side wall at thedesired level.

Insert the right end of the shelf into theshelf supports at the same level. Resteach end of the shelf on the bottom ofthe shelf supports.

NOTE: For models with an automatic icemaker,the freezer shelf must be in the lower position for the ice cube bucket to catch the cubes.

SHELVES and BINSNote: Not all features are on all models.

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Non-Adjustable Shelves on the DoorTo remove: Lift the shelf straight up thenpull out.

To replace: Engage the shelf in the moldedsupports on the door and push down. It willlock in place.

Adjustable Bins on the DoorAdjustable bins can easily be carried fromrefrigerator to work area.

To remove: Lift bin straight up, then pull out.

To replace or relocate: Engage the bin in themolded supports of the door, and push in.Bin will lock in place.

The snugger helps prevent tipping, spilling or sliding of small items stored on the doorshelf. Grip the finger hold near the rear ofthe snugger and move it to fit your needs.

Snugger

Freezer Tilt Out Bin (on some models)

Push the button as you tilt out the bin.

To remove: Hold the sides of the bin and liftit straight up, then pull out.

To replace: Engage the ends of the bin in the molded supports on the door and pushdown. It will lock in place.

NOTE: Do not overload the bin.

Slide-Out Spillproof Shelf (on some models)

The slide-out spillproof shelf allows you to reach items stored behind others. Thespecial edges are designed to help preventspills from dripping to lower shelves.

To remove:Remove all items from shelf.

Slide the shelf out until it stops.

Lift the front edge of the shelf until thecentral tabs are above the front bar.

Continue pulling the shelf forward untilit can be removed.

To replace:Place the rear shelf tabs just in front ofthe central notches on the shelf frame.

Slide the shelf in until the central tabsare slightly behind the front bar.

Lower the shelf into place until it ishorizontal and slide the shelf in.

Make sure that the shelf sits flat after reinstallationand doesn’t move freely from side to side.

Make sure you push the shelves all the way inbefore you close the door.

Finger hold

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Shelf Saver Rack (on some models)

Slide-out beverage rack holds twelve cans ofsoda or two wine/water bottles (lengthwise).It can be removed for cleaning.

To remove, slide the rack out to the stopposition, lift the rack up and past the stopposition and lift it out.

Fruit and Vegetable CrisperExcess water that may accumulate in thebottom of the drawers or under the drawersshould be wiped dry.

Adjustable Humidity Crisper (on some models)

Slide the control all the way to the HIGH setting to provide high humidityrecommended for most vegetables.

Slide the control all the way to the LOWsetting to provide lower humidity levelsrecommended for most fruits.

Snack Pan (on some models)

This pan can be moved to the most usefullocation for your family’s needs.

To remove, slide the pan out to the stopposition, lift the pan up and past the stopposition and lift it out.

Adjustable Temperature Deli Pan (on some models)

When the pan is placed in the top 6 slots onthe left side and the lever is set at COLDEST,air from the freezer is forced around thepan to keep it very cold.

You can move the pan to any location if youdon’t want the extra cold storage.

The settings can be adjusted anywherebetween cold and coldest .

When set at cold, the pan will stay at thenormal refrigerator temperature.

The coldest setting provides the coldeststorage area.

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Crisper RemovalTo Remove:

These drawers can be removed easily bylifting up slightly while pulling the drawerpast the stop location.

When the door cannot be fully opened,remove the drawer farthest from the doorfirst. Make sure the drawer closest to thedoor is fully closed. There is a latch at thefront of the center slide rail. Push down onthe latch and slide the center slide rail, towhich the drawer is attached, away from thedoor. Remove the drawer.

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CABINET CONSTRUCTION

CabinetThe outer case is made of prepainted steel witha textured finish. The fresh food and freezerliners are made of plastic with a smooth finish.Individual compartments provide separation andenhanced individual control between thecompartments. The plastic liner provides athermal break between the interior of therefrigerator and freezer compartments andreduces the transfer of heat from the room intothe fresh food and freezer compartments. Theliner is not removable or replaceable.

GEA01144

Base GrilleThe base grille is attached to the cabinet withtwo steel spring retainers that clip into elongatedopenings in the base channel. To remove thegrille, pull it straight forward.

DoorsThe doors are of one-piece construction withfoam insulation. One-piece constructionprovides superior thermal performance andreduces air infiltration. During manufacturing,the doors are filled with hot foam insulation.This may cause slight distortion or ripples in theinner door liner. This is a normal condition andis the result of the insulating process. Thisprocess requires doors to be equipped with ventholes that allow air to escape when the door isfilled with foam. A small amount of foam may bevisible around the vent holes.

The inner door panels and outer door panelscannot be separated and must be replaced asan assembly.

GEA01145

GEA01138Vent Holes

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Door GasketsThe fresh food and freezer doors have magneticgaskets that create a positive seal to the front ofthe steel cabinet. The magnetic door gasketsare secured to the fresh food and freezer doorsby a barbed edge that locks into a retainerchannel.

1. Starting at any corner, pull the old gasket outof the retainer channel.

2. Soak the new gasket in warm water to makeit pliable.

3. Push the barbed edge of the gasket into theretainer channel.

RollersRollers at the base of the cabinet enable thecustomer to easily move the refrigerator.Cabinet leveling is done by adjusting the frontrollers. To adjust the front rollers, use a 3/8-in.socket or a large flat head screwdriver to turnthe roller adjustment screws located behind thebase grille. The rear rollers are not adjustable.

To remove a front roller assembly from the baseof the cabinet:

1. Tilt the cabinet back and place a3-in. block under the side of the unit.

2. Remove 3 hex head 1/4-in. screws from theroller assembly.

3. Loosen the adjustment screw until itdisengages from the assembly and removethe assembly from the cabinet.

4. Remove the E-ring to remove theadjustment screw from the base channel.

Note: When reinstalling the roller assembly,position the nut with the flared thread toward therear of the unit.

GEA01147

GEA01150

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ICEMAKERThe 2001 LTMNF refrigerators use anelectronic icemaker. Refer to Pub. #31-9063 forservice information.

Water ValveA single-coil, 120-VAC valve is secured to therear of the cabinet, inside the machinecompartment, on the left-hand side.

GEA01142

GEA01137

– 18 –

AIRFLOW

GEA01143

GEA01135

Mullion

Freezer CompartmentCold air from the evaporator is forced up againstthe top of the freezer and the back of theevaporator cover. It is then discharged throughslots along the air tower at the rear of thefreezer compartment.

Air is circulated by the evaporator fanthroughout the freezer compartment, where itpicks up heat and moisture. The evaporator fanthen draws the warmer, moisture-laden airthrough return louvers in the bottom of theevaporator cover. The air is then drawn throughthe evaporator where heat is removed andmoisture is deposited as frost.

Fresh Food CompartmentSome of the cold air that is being forced againstthe top of the freezer and back of the evaporatorcover is diverted through the lower portion of thefreezer air tower and is pushed though themullion hole into the fresh food compartment airchannel. The air then exits the air channel in thefront of the fresh food compartment, creating acurtain of cold air along the front of the shelves.The fresh food air channel also has a reardischarge to maintain deli drawer temperatures.

Air circulates throughout the fresh foodcompartment, picking up heat and moisture.The air is then returned to the evaporatorthrough the return air ducts located at the topright and left of the fresh food compartment.

Note: These refrigerators do NOT use damperassemblies to regulate the flow of air to thefresh food compartment. Airflow is regulated bya three-speed evaporator fan and a sized airduct system that provide predictable, consistentair exchange rates for each level of fan speed.

AIR FLOW

COLD AIR MIXED AIR WARMER AIR

Airflow

– 19 –

GEA01140

GEA01141

Evaporator FanThe position of the fan blade in relation to theshroud is critical. Refer to graphic forspecifications.

If the fan shorts, it will damage the main controlboard. If the resistor on the main control boardis burnt, you must replace the fan and the board(see photo).

5/16" ± 0.03

Blade tip1.0" ± 0.05 Target

Motor

Air Flow

Orifice

GEA01149

Evaporator and Condenser Fan Resistors Evaporator Fan Resistor

Condenser Fan Resistor

Bad Evaporator Fan Resistor

Evaporator Fan Adjustment

Airflow

– 20 –

The evaporator fan utilizes a permanent magnet, 4-pole, DC motor that operates at three differentspeeds: high, medium, and low. The speed of the fan is controlled by the voltage output from theprimary control board. Voltage output from the control board to the fan is 12.6 VDC; however, inorder to regulate the speed of the fan, the control board uses pulse width modulation (PWM) duringlow speed and medium speed operation. When operating in low and medium speed, voltage issent in pulses (much like a duty cycle) as opposed to an uninterrupted flow. This pulsing of 12.6VDC produces effective voltage being received at the motor, which is the equivalent to a reductionin voltage. Fan speed will be selected and maintained by the control board regulating the length andfrequency of the 12.6-VDC pulse.

One complete revolution of the motor is comprised of all 4 poles. To determine the rpm of the fan:Measure the frequency being applied to the motor. Multiply this number by 15 (60 seconds dividedby 4 poles). For example, a frequency measurement of 200 Hz multiplied by 15 would show a fanspeed of 3000 rpm (15 x 200 = 3000). Temperature may cause some fan speed variation. Fanspeed may vary +/- 5%, depending on the temperature, with higher temperatures causing slightlyhigher speeds.

High Speed (12 VDC measured)

Medium Speed (8 VDC measured)

Low Speed (4 VDC measured)

EVAPORATOR FAN SPEEDS

12 VDC

8 VDC

4 VDC

12 VDC

0 VDC

0 VDC

0 VDC

12VDC

12 VDC

GEA01139

– 21 –

J2 (To Evaporator Fan and Condenser Fan)

Main Control Board

The evaporator fan motor uses a 4-wireconnection, utilizing a common wire (white),feedback/rpm wire (blue), supply wire (red), anda signal wire (yellow).

White Wire (DC Common)

The white wire is the DC common wire used fortesting. During repairs, DC polarity must beobserved. Reversing the DC polarity will causea shorted motor and/or board.

Red Wire (Supply)

Each motor uses an internal electronic controllerto operate the motor. Supply voltage from themain control board remains at a constant12 VDC.

Blue Wire (Feedback/RPM)

The blue wire feeds rpm (speed) information tothe main control board, allowing the board tomaintain consistent fan speeds. Loss offeedback from the blue wire will result in the fanaccelerating to maximum speed. Measure thefan rpm using the frequency between the blueand white wires.

High speed - 195 to 200 HzMedium speed - 145 to 160 HzLow speed - 70 to 85 Hz

Yellow Wire (Signal)

The yellow wire is the input wire from the maincontrol board. The main control board provides4.6 VDC effective voltage for low speed, 8.1VDC effective voltage for medium speed, and12.6 VDC for high speed. The fan will operatein low speed only when the fresh food thermistoris satisfied.

Note: When testing these motors:• You cannot test with an ohmmeter.• DC common is not AC common.• Verify 2 voltage potentials: a. Red to white - power for internalcontroller. b. Yellow to white - power for fan.• Observe circuit polarity.• Motors can be run for short periods using a 9-volt battery. Connect the white wire to the negative (-) battery terminal only. Connect the red and yellow wires to the positive (+) battery terminal.

Connector (To Main Control Board)

Evaporator Fan

Evaporator Fan Connector

– 22 –

Condenser FanThe condenser fan utilizes a DC motor thatoperates on a single speed and is mounted inthe machine compartment with the No-Cleancondenser. The fan and fan shroud aremounted on one end of the condenser, the otherend of the condenser is blocked. When the fanis operating, air is pulled from the center of thecondenser, drawing air in through the coils. Theair is then exhausted over the compressor andout the right side of the refrigerator.

Inlet air is available through the left front and leftrear of the machine compartment. A rubberdivider strip underneath the refrigerator dividesthe inlet and outlet sides of the machinecompartment.

The rear access cover must be tightly fitted toprevent air from being exhausted directly out ofthe rear of the machine compartment, bypassingthe compressor.

The condenser fan is mounted with screws to afan shroud and mounting bracket that isattached to the condenser. To remove the fan:

1. Remove the rear access cover.

2. Remove 1 screw from the condenser fanmounting bracket.

3. Remove 2 screws from the condenser fancover.

4. Pull the fan out and disconnect the electricalconnector.

Rear

Front

Baffle

GEA01152

Housing

Fan

Motor

0.375"

1/2"

Air Flow

0.50" ± 0.05

Bracket

GEA01148

Condenser Fan Adjustment

Airflow

– 23 –

DEFROST SYSTEM

Adaptive DefrostAdaptive Defrost can be described as a defrostsystem that adapts to a refrigerator’ssurrounding environment and household usage.

Unlike conventional defrost systems that useelectromechanical timers with a fixed defrostcycle time, Adaptive Defrost utilizes anintelligent, electronic control to determine whenthe defrost cycle is necessary. In order toaccomplish the correct defrost cycle time, themain control board monitors the followingrefrigerator operations:

• Length of time the refrigerator doors wereopen since the last defrost cycle

• Length of time the compressor has runsince the last defrost cycle

• Amount of time the defrost heaters were onin the last defrost cycle

Adaptive Defrost is divided into 5 separatecycles. Those operations are:

• Cooling Operation

• Pre-Chill Operation

• Defrost Heater Operation

• Dwell Period

• Post Dwell

(See Pub. #31-9062 for more information onAdaptive Defrost.)

Adaptive Defrost (Cooling Operation)During the cooling operation, the main controlboard monitors door opening (fresh food andfreezer doors) and compressor run times. Theboard counts the time the doors are open. Itreduces the length between defrosts by 210seconds (multiplication factor) for each secondthat each door is open (if both doors are open,it reduces it by twice the amount). Themultiplication factor reduces compressor runtime. If the doors are not opened, thecompressor will run up to 60 hours between

defrosts. If the doors are opened frequentlyand/or for long periods of time, the compressorrun time between defrosts will be reduced to aslittle as 8 hours.

Adaptive Defrost (Pre-chill Operation)

09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00

FREEZER AIR TEMPERATURES

DefrostPre-Chill

08:00

25˚ / -4˚

20˚ / -7˚

15˚ / -9˚

10˚ / -12˚

5˚ / -15˚

0˚ / -18˚

-5˚ / -21˚

-10˚ / -23˚

-15˚ / -26˚

-20˚ / -29˚

F˚ / C˚PRE-CHILL MODE

When the main control board determines thatdefrost is necessary, it will force the refrigeratorinto a continuous cool mode (pre-chill). Duringpre-chill, the freezer temperature may be drivenbelow the set point. However, the fresh foodtemperature will be regulated by the evaporatorfan running at low speed. Pre-chill will last for 2hours. These models do not have a defrostholdoff.

Adaptive Defrost (Defrost HeaterOperation)After 2 hours of pre-chill operation, the maincontrol board turns off the compressor,condenser fan, and evaporator fan.

During defrost operation, the main control boardmonitors the evaporator temperature usingevaporator thermistor inputs. Typically, theevaporator thermistor will sense a temperatureof 65°F within 25 minutes. When the thermistorsenses 65°F, the main control board willterminate defrost heater operation. Maximumdefrost cycle (heater on) time is 45 minutes(main control board time out).

The defrost system is protected by a defrosttermination thermostat (switch). The thermostatopens when the evaporator temperature raisesto 140°F and closes when the evaporatortemperature lowers to 110°F.

– 24 –

Adaptive Defrost (Dwell Period)After defrost heater operation has beenterminated by the main control board, a 5-minute dwell period occurs. During this period,the compressor, condenser fan, and theevaporator fan remain off. The remaining frostmelting from the evaporator will continue to dripand drain so that prior to the cooling operation,the evaporator will be totally clear of anymoisture. After the 5-minute dwell period, theunit goes into post dwell.

Adaptive Defrost (Post Dwell)The post dwell period is designed to cool theevaporator before circulating air within therefrigerator. This prevents any residual heat onthe evaporator from being distributed in thefreezer. During this period, the compressor is onand the condenser fan is on, but the evaporatorfan is off. Post dwell will last 15 minutes or untilthe evaporator temperature reaches 30°F onthese models.

Normal Operating Characteristics ThatAre Different from Previous Models• Evaporator fan running without compressor

or condenser fan.

• Post Dwell (Adaptive Defrost), compressor,and condenser fan on with evaporator fan offafter defrost cycle.

• Liner Protection Mode, fan comes on whenthe doors are open for 3 minutes.

• Evaporator fan and compressor can runcontinuously for 2 hours (Adaptive Defrost).

• Different sound levels can be heard whenthe fan changes speed.

• Response time for drastic temperaturechange is 2 to 10 minutes. The main controlboard will only respond to 8 degrees(Fahrenheit) of temperature change perminute as determined by resistance ofsensor.

Abnormal Operating Characteristics(Incorrect Operation)• Rapid fan speed changes, fan takes at least

1 minute to change speeds.

• Compressor running without the condenserfan. The compressor and condenser fanshould always run at the same time.

Liner Protection ModeThe liner protection mode will activate if either ofthe doors have been open for 3 minutes. Thismode will start the evaporator fan on highspeed.

This mode is controlled by 2 timers. Timer 1monitors door-open time. A 3-minute door-opencount begins when the door is opened. If 3minutes elapse before the door is closed, theliner protection mode will become active. Oncethe door is closed, timer 1 resets and linerprotection mode goes into standby. In standby,normal fan and damper operations resume andtimer 2 begins a 3-minute door-closed count. If3 minutes elapse without a door opening, linerprotection mode will completely deactivate. If adoor is opened within the timer 2 door-closedcount, the remaining time in the door-closedcount will be deducted from the timer 1 door-open count.

– 25 –

Defrost HeaterThe defrost heater is a single-tube, radiantheater. It is held in place by 2 tabs on theevaporator (1 on each side) and by 2 ceramicand wire supports.

The ceramic and wire supports prevent theheater from sagging and touching the metaldrain pan if the glass is broken.

Defrost Heater Supports

Defrost Drain ProbeHeater Supports

Evaporator Thermistor

Defrost Overtemperature Thermostat

Evaporator ThermistorThe evaporator thermistor is mounted on theupper right side of the evaporator. The defrostcycle will terminate when the main control boarddetects 65°F from the evaporator thermistor.The main control board must sense 65°F in lessthan 45 minutes, or the defrost cycle will timeout. Normal defrost time is 25 minutes or less,not including the 5-minute dwell or post dwellperiods.

Defrost Overtemperature ThermostatThe defrost overtemperature thermostat(bimetal switch) is mounted on the evaporatorand provides overtemperature protection duringdefrost. This thermostat will open at 140°F andwill close at 110°F.

Note: The main control board will not know ifthe heater does not come on due to a brokenheater, open defrost overtemperaturethermostat, or an open wiring harness. Thedefrost heater is controlled by maximum time onthe main control board or temperature at theevaporator thermistor.

– 26 –

Defrost Drain Probe

Evaporator

Defrost ProbesA defrost drain probe is attached to theevaporator and extends into the drain opening.This probe transfers heat to the drain openingduring defrost.

Two additional defrost probes are attached tothe sides of the evaporator. These probesextend upward between the freezer wall andevaporator sides to assist the defrostingprocess.

– 27 –

CONTROL SYSTEM

Control ConsoleThe control console, located at the top front ofthe fresh food compartment, contains anencoder (knob version) or a touch panel.

Remove the control console by removing 4 (1/4-in.) hex head screws. Use care whendisconnecting the wire connectors from theencoder or touch panel.

Temperature EncoderThe temperature encoder (knob version)receives switched DC voltage from the maincontrol board. There are two possible failuremodes - both are open circuits.

An open circuit from the supply side results inthe refrigerator defaulting to midpoint. Thesupply side consists of pins 1 and 2.

An open circuit from the return side results ininconsistent run mode. The return side consistsof pins 3 and 6.

Failure of the fresh-food-only side results in thefresh food defaulting to midpoint.

Failure of the freezer side results in the freezerdefaulting to midpoint.

Temperature Touch PanelThe temperature touch panel receives switchedDC voltage from the main control board.

Failure of input results in default to most recentsetting. Input consists of pins 2 to 3.

Failure of output results in erratic control.Output consists of pin 1.

ADJUST REFRIGERATOR TEMPADJUST FREEZER TEMP ACTIVATE LOCK

IS COLDEST9 IS COLDEST9

HOLD 3 SECS

COLDER WARMER COLDER WARMER

9 IS COLDEST

ADJUST FREEZER TEMP ADJUST REFRIGERATOR TEMP

5 5

ADJUST REFRIGERATOR TEMPADJUST FREEZER TEMP ACTIVATE LOCK

IS COLDEST9 IS COLDEST9

HOLD 3 SECS

COLDER WARMER COLDER WARMER

– 28 –

Control BoardThe main control board, located behind a panel at the rear of the refrigerator, manages theoperation of the refrigerator by calculating response from various inputs.

SNOITINIFEDNIPDRAOBLORTNOC

ROTCENNOC NIP TUPNI TUPTUO NOITCNUF

2J 1 zH rofMWPehtlortnocotdesusiycneuqerfkcabdeefsihT.nafrotaropavemorfkcabdeeF.sdeepsnaf

2J 2 CDV senimreted,snipytilanosreprehtohtiwnoitanibmocnidetcennocnehw,tahtnipnoitceleS.desugnimmargorpdnaledom

2J 3 CDV dnuorgCDV-nommocnaF

2J 4 CDV .MWPybdenimretedsiegatlovevitceffE.noitareporotomrofnafrotaropaveottuptuO

2J 5 CDV ,MWPybdenimretedsiegatlovevitceffE.noitareporotomrofnafrosnednocottuptuO.MORPEEnitesdeeps

2J 6 CDV MWProfkcabdeefonsierehT.noitareporotomrof)desunehw(nafdoofhserfottuptuO.nafdoofhserfnodesu

2J 7 CDV rofkcabdeefonsierehT.noitareporotomrof)desunehw(naflooCmotsuCottuptuO.nafllihCkciuQnodesuMWP

2J 8 CDV .egatlovtnatsnoc,snafllaotegatlovylppusCDV21sedivorP



1J 1 CDV

,sporderutarepmetnehw,CTNsirotsimrehT.eulavrotsimrehtdoofhserffokcabdeeFelcycotdesusieulavsihT.noitcuderegatlovnrutergnisuac,sesaercnieulavecnatsiser

sikcabdeeF.nafrosnednocdna,rosserpmoc,nafrotaropave,)desunehw(nafdoofhserf.etunimrepegnahcfoseerged8otdnopserotderetlif

1J 2 CDV

nehw,CTNsirotsimrehT.)desunehw(eulavrotsimrehtdoofhserfdnocesfokcabdeeFeulavsihT.noitcuderegatlovnrutergnisuac,sesaercnieulavecnatsiser,sporderutarepmet

rosnednocdna,rosserpmoc,nafrotaropave,)desunehw(nafdoofhserfelcycotdesusi.etunimrepegnahcfoseerged8otdnopserotderetlifsikcabdeeF.naf

1J 3 CDV

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.etunimrepegnahcfoseerged8otdnopserotderetlifsikcabdeeF.)desu

1J 4 CDV

,sporderutarepmetnehw,CTNsirotsimrehT.eulavrotsimrehtrotaropavefokcabdeeFdesusieulavrotsimrehtsihT.noitcuderegatlovnrutergnisuac,sesaercnieulavecnatsisernehwffodnaeulavtsorfedwolebsierutarepmetnehwtsorfedgnirudnoretaehehtelcycot

otpu-rewopgniruddaeroslasieulavsihT.eulavtsorfedevobasierutarepmetehtsikcabdeeF.noitaunitnocelcycroedomnwodllupotniseogrotaregirferfienimreted

.yletaidemmisdnopser,deretlifnu

1J 5 CDV .1JnosnipytilanosrepdnasrotsimrehtrofCDV5sedivorP

1J 6 CDVsenimreted,snipytilanosreprehtohtiwnoitanibmocnidetcennocnehw,tahtnipnoitceleS

.ylnopu-rewopnonoitanibmocsdaeR.desugnimmargorpdnaledom







– 29 –



3J 1 CDV .)desunehw(repmaD




3J 5 CDV

tnemtrapmocdoofhserfsesuactuptuofossoL.redocneerutarepmetottuptuodoofhserF.6nipsezigreneneht,sdnocesillim05yrevedezigrenE.gnittestniopdimtaetarepootmorflangisoN.nisiredocnedoofhserfnoitisoptahweesot01-7snipnonrettapsdaeR

.noitareporezeerfdnadoofhserfcitarrenistluser01-7snip

3J 6 CDV

ottnemtrapmocrezeerfsesuactuptuofossoL.redocneerutarepmetottuptuorezeerF.dezigrenesi5nipretfasdnocesillim05yrevedezigrenE.gnittestniopdimtaetarepomorflangisoN.nisiredocnerezeerfnoitisoptahweesot01-7snipnonrettapsdaeR

.noitareporezeerfdnadoofhserfcitarrenistluser01-7snip

3J 7 CDV .noitarepocitarrenistlusertupnifossoL.redocneerutarepmetmorftupnI






4J 1latigiD

noitacinummoClatigiD

noitacinummoC.draoblortnocdnalortnocneewtebnoitacinummoclatigidyaw-owT

4J 2 CDV .ylppusCDV-21

4J 3 CDV .nommocCD

4J 4 CDV .ecidehsurcro/dnadebuc,retawetavitcaotsledomrenepsidemosnodesU

4J 5 CDV .ecidehsurcro/dnadebuc,retawetavitcaotsledomrenepsidemosnodesU

.noitisopffosi5nipnolangisondna4nipnolangisoN.noitcelesdehsurcsi5nipnolangishtiw4nipnolangisoN

.noitcelesdebucsi5nipnolangisondna4nipnolangiS.noitcelesretawsi5nipnolangisdna4nipnolangiS



5J 1 CDV .)desunehw(repmadlooCmotsuC




5J 5 CDV .CDV5+:snoitcennocnip5JotegatlovtupnI

5J 6 CDV,sporderutarepmetnehw,CTNsirotsimrehT.eulavrotsimrehtlooCmotsuCfokcabdeeF

otdesusieulavsihT.egatlovnruterninoitcuderagnisuac,sesaercnieulavecnatsiser.)desunehw(naflooCmotsuCelcyc

– 30 –



7J 1 CAVtuptuoedivorptonlliW.resnepsidhtiwdeppiuqesledomnotiucricrotomreguaottuptuO

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.4niptatneserpsitupnionnehw

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7J 4 CAVhctiws(desolcsiroodnehwhctiwsroodrezeerfmorftupniseveiceR.tiucrickcolretnI

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7J 5 CAV .deppiuqenehwretaehlooCmotsuCottuptuo1L

7J 6 CAVtupnisihT.)neporood(sesolchctiwsnehwhctiwsrooddoofhserfmorftupni1LsevieceR

mralarood,snoitaluclacedomnoitcetorprenil,lortnocroodrewopnafrofdesusi.snoitaluclactsorfedevitpadadna,snoitaluclac

7J 7 CAV

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.ezigreneottengam

7J 8

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9J 1 CAVsitiucricsihtgnolwohstnuocremitA.CAV021-tiucrictsorfedehtotegatlov1LdehctiwS

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– 31 –

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niP roloCeriW tnenopmoCnoitanimreT

/tupnItuptuO

gnidaeRegatloVniP-ot-niP

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)deeps



8 deR egatlovylppusnaF)CDV21(

tuptuO CDV21=3nipot8nip2J

elbaTrotacoLdraoBlortnoCniaM)ediSegatloV-woL(rotcennoC1J


/tupnItuptuO


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4 etihW rotaropavErotsimreht


5 eulB ylppusrotsimrehT)CDV5(egatlov

tuptuO CDV5=9nip7Jot5nip1J




– 32 –



/tupnItuptuO


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/tupnItuptuO


5 wolleY/eulB lortnocerutarepmeTlenap

6 nworB/etihW lortnocerutarepmeTlenap

7 kcalB/deR lortnocerutarepmeTlenap

8 kcalB lortnocerutarepmeTlenap

9 deR lortnocerutarepmeTlenap


– 33 –

– 34 –



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6 nworB/etihW lortnocerutarepmeTlenap

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1 deR/eulB doofhserFrotsimreht



3 etihW/deR rotsimrehtrezeerF tupnI 5.3ot8.2=5nipot3nip1JCDV

4 etihW rotaropavErotsimreht







– 35 –

trahCtnioPteSerutarepmeT

lortnoCgnitteS

dooFhserFtnemtrapmoC

rezeerFtnemtrapmoC

dooFhserFrotsimrehT

egnaRerutarepmeT

rotsimrehTrezeerFegnaRerutarepmeT

muminiM mumixaM muminiM mumixaM

0 ffO ffO

1 F°44 F°6 F°34 F°54 F°1 F°11

2 F°04 F°4 F°93 F°14 F°1- F°9

3 F°93 F°3 F°83 F°04 F°2- F°8

4 F°83 F°1 F°73 F°93 F°4- F°6

5 F°73 F°0 F°63 F°83 F°5- F°5

6 F°63 F°1- F°53 F°73 F°6- F°4

7 F°53 F°3- F°43 F°63 F°8- F°2

8 F°53 F°4- F°43 F°63 F°9- F°1

9 F°43 F°6- F°33 F°53 F°11- F°1-

ThermistorsThis main control board uses input from 3 thermistors. These thermistors are located in the freshfood section, the freezer section, and on the evaporator. The main control board monitors thethermistors to determine the temperature in these areas of the unit and determines whichcomponents to run and when to run them, based on this information.

seulaVrotsimrehT

erutarepmeT)C(seergeD

erutarepmeT)F(seergeD

ecnatsiseRsmho-oliKni

04- 04- k8.661 Ω

03- 22- k88 Ω

02- 4- k4.84 Ω

01- 41 k6.72 Ω

0 23 k3.61 Ω

01 05 k01 Ω

02 86 k2.6 Ω

03 68 k4 Ω

04 401 k6.2 Ω

05 221 k8.1 Ω

06 041 k2.1 Ω

– 36 –

ELECTRICAL SYSTEM

Door SwitchesThe door switch (fresh food or freezer) closes when the door is open. When the door switch isclosed, L1 is provided to the compartment light(s). The main control board receives L1 input onpin 6, J7 when the fresh food door switch is closed (door open). The main control board receivesL1 input on pin 4, J7 when the freezer door switch is closed (door open).

Schematic

TEMPERATURECONTROL

(SEE INDIVIDUAL DIAGRAM)

J3-5 J3-3 J3-1

J4-1

J4-2

J4-3

J2-8

TEMPERATURE CONTROL BOARD INCONTROL HOUSING, FF COMPARTMENT

SMART TROLLEY1 2 3

BLUE/YELLOW

WHITE/BROWN

RED/BLACK

YELLOW

YELLOW/BLACK

WIHTE (COMM)

BLUE (RPM)

MOD 2

+5V BLUE

BLUE/WHITE

THERMISTOR EVAP.

THERMISTOR FZ.

THERMISTOR FF1

RED/WHITERED/WHITE

BLUE/RED BLUE/RED

EVAP. FANCOND. FAN

(SEEINDIVIDUALDIAGRAM)

(SEEINDIVIDUALDIAGRAM)

+ 12V RED

J2-5

J2-4

J2-3

J2-1

WH

ITE

WH

ITE

BL

UE

BL

UE

BL

UE

BL

UE

YE

LL

OW

YE

LL

OW

RE

D

RE

D

J1-7

J1-5

J1-4

J1-3

J1-1

J6-9

J6-6

TAB

1TA

B 2

TAB

4J6

-7J6

-4

MA

IN C

ON

TR

OL

PW

B(S

EE

IND

IVID

UA

L D

IAG

RA

M)

ORANGE

ORANGEBROWN

BROWN

BROWN

BROWNBROWN

PURPLE

PURPLE

RED

RED

PURPLE

OR

AN

GE

OR

AN

GE

OR

AN

GE

OR

AN

GE

BR

OW

N

OVERLOAD

COMPRESSOR RELAY

WHITE

CAPACITOR

BLACK

(SEE INDIVIDUAL DIAGRAM)

6

5

4 1

3

ORANGE

ORANGE

ORANGE

ORANGEORANGE

ORANGE

ORANGE ORANGEWHITEWHITEWHITE

DEFROSTTHERMOSTAT

PINK

DEFROST HEATERBLUE

FRESH FOOD LIGHT

FREEZER LIGHTFZ SWITCH

FF SWITCH

WATER VALVE

ICE MAKER

– 37 –

Wiring Diagram

ORANGE

ORANGETOICE MAKER

FREEZER LAMP

FRESH FOODLAMP

POWER CORD

FRESH FOODLIGHT SWITCH

FREEZERLIGHT SWITCH

DEFROSTTHERMOSTAT

PINK

PURPLE

PURPLE

PURPLE

BROWN

ORANGE

ORANGE

RED

REDBROWN

ORANGE

BLACK

ORANGE

WHITE

ICE MAKERVALVE

ORANGE

WHITE BROWN

GREEN/YELLOW

TO MACHINEWIRING

DEFROSTTHERMOSTAT

BLUE

ORANGE

TO CABINETWIRING

WHITE

WHITEORANGE

RELAY

OVERLOAD

BLACK

RUN CAPACITOR

S21

CR

GREEN/YELLOW

– 38 –

REFRIGERATION SYSTEMThe major components of the refrigerationsystem are a reciprocating-type compressor,condenser, condenser loop, dryer, and a spine-fin evaporator. These components, except forthe condenser loop, are all replaceableseparately.

CompressorThe compressor is a reciprocating type. Referto the mini-manual for the BTU/hour rating andthe compressor capacity test specification.A 1/4-in. O.D. copper process tube is providedfor access to the low-pressure side of therefrigeration system.

The channel that the compressor is mounted inmust be disengaged from the cabinet to removethe compressor.

Note: Capillary tube must be clipped tocompressor suction line near the dryer. Ifcapillary tube is not clipped to suction line, aknocking noise may occur during compressoroperation.

Refer to the compressor replacementinstructions included with the replacementcompressor.

No-Clean CondenserThe Condenser is a No-Clean, “jelly roll” stylecondenser made of 3/16-in. O.D. steel tubing.The outlet of the condenser is connected to acopper jumper tube that is connected to the inletof the condenser loop. The No-Cleancondenser is accessed from the rear of thecabinet and is designed to be more tolerant oflint buildup than previous condensers. Theconsumer, in normal operating conditions, willnever have to clean the condenser. Ifnecessary, only an ordinary appliance brush isused. Air is drawn in from the outside diameterof the condenser. A condenser fan baffle islocated at the rear to direct airflow through thecondenser. Functionally, the condenser doesthe same job as previous models. Air is drawninto the condenser from the front left and rearleft of the cabinet. Air exits only from the rightside of the cabinet.

Condenser LoopThe condenser loop, made of 5/32-in. O.D.copper tubing, is foamed in place behind thebreaker frame and across the mullion. It is notaccessible for replacement. The tubing isrouted from the rear of the machinecompartment forward to the mullion, across themullion, across the right side of the freezercompartment, across the top of the freezercompartment, down the right side of the freezer,and back to the rear of the machinecompartment. The outlet of the condenser loopis connected to the dryer inlet.

DryerThe dryer is positioned vertically in the center ofthe machine compartment. A 1/4-in. O.D.copper process tube, connected to the inlet ofthe dryer, provides access to the high-pressureside of the refrigeration system. The capillary isconnected to the outlet of the dryer.Replacement of filter dryer requires additionalrefrigerant when installed (0.5 oz).

Note: The dryer is wrapped in mastic as asound reducer and foam tape for shippingpurposes. When replacing the dryer, the masticmust be reinstalled to reduce sound. It is notnecessary to reinstall the foam tape.

EvaporatorThe spine-fin evaporator, made of aluminumtubing and formed into hairpin spirals, is locatedbelow the evaporator fan housing at the back ofthe freezer compartment. The replacementevaporator is furnished without a heatexchange.

Evaporator (Soldering Method)1. Recover the refrigerant.

2. Remove the evaporator cover.

3. Remove the defrost thermostat.

4. Remove the defrost heater.

5. Disconnect the ground wire from theevaporator and position all wiring to allow forevaporator removal.

– 39 –

6. Remove the 2 screws that hold theevaporator to the cabinet.

Caution:• If desoldering the evaporator, heat shield,

P/N WR49X10025, must be used toprevent damage to freezer liner.

• Protect wiring from heat duringdesoldering and resoldering.

• To prevent damage to the capillary tube,the capillary tube must be desolderedfirst.

7. Desolder the capillary tube from theevaporator.

8. Desolder the suction line. Use a pair of pliersto hold the evaporator.

9. Remove the evaporator.

10. Using a file, score the capillary tube just abovethe old solder and break the solder-coveredsection off. This will help prevent the capillarytube from becoming plugged whenresoldering.

11. Position the new evaporator in the cabinet.Insert the suction line and capillary tube intothe evaporator.

12. Solder the suction line to the evaporatorusing silfos.

13. Solder the capillary tube to the evaporatorusing silfos.

Note: Heat probe assists in defrosting drain.During assembly, probe must be installed onevaporator and in drain to prevent drain fromfreezing closed.

14. Install a replacement dryer.

15. Evacuate and recharge the system usingcurrently accepted procedures.

Evaporator (LOKRING Method)1. Recover the refrigerant.

2. Remove the evaporator cover.

3. Remove the defrost thermostat.

4. Remove the defrost heater.

5. Disconnect the ground wire from theevaporator and position all wiring to allow forevaporator removal.

6. Remove the 2 screws that hold theevaporator to the cabinet.

Caution: Tubing must be clean and free fromburrs when using LOKRING.

Note: LOKRING connector, P/N WR97X10021must be used. Two LOKRING connectors P/NWR97X10021 are required.

7. Replace the evaporator using the LOKRINGmethod (see Pub #31-9067).• Cut the copper lines of the old evaporator as close as possible to the aluminum evaporator tubes.• Cut the copper lines of the new evaporator 1-1/8 in. from the edge of the aluminum evaporator tubes.

• Defrost thermostat can be moved from the horizontal part of the copper line to the

vertical part, just above the bend.

Note: Heat probe assists in defrosting drain.During assembly, probe must be installed onevaporator and in drain to prevent drain fromfreezing closed.

8. Install a replacement dryer.

9. Evacuate and recharge the system usingcurrently accepted procedures.

Refrigerant ChargeThe refrigerant used in this model is typeR134a. Refer to the mini-manual or model tagfor the exact refrigerant charge quantity.

– 40 –

Evaporator Fan Evaporator Fan Connector

Defrost Heater

Defrost Heater Defrost Drain ProbeSupport

Evaporator

EvaporatorThermistor

DefrostOvertempertaureThermostat

Icemaker Connector

COMPONENT AND CONNECTOR LOCATOR VIEWS

FreezerThermistor

DefrostProbe

– 41 –

Temperature Control

Fresh FoodDoor Switch

Fresh Food Compartment

Fresh FoodThermistor

– 42 –

J1 (To Thermistors)

J7

J3 (To Temperature Control Board)

Main Control Board

J2 (To Evaporator Fan and Condenser Fan)

– 43 –

– 44 –

CompressorRelay andOverload(Under Cover)

Capacitor Condenser Fan

No-Clean CondenserDryer

– 45 –

Fresh Food Warm - Freezer Warm

Basic refrigeration checks:Door gasket seal OK?

Door switch - light turning off withdoor closed?

All OK?

Repair asnecessary.

NO

Is the evaporator fan running?

YES

Go to EvaporatorFan Not Running

flowchart.NO

Is the airflow in the fresh foodcompartment normal?

YES

Look for blockageat vents or heavy

frost on evaporatorcover.

NO

Go to Heavy Froston Evaporator

Cover flowchart.Heavy frost

Remove blockage fromevaporator cover vent

area.Blockage

Verify thermistors are withinproper range.

Is the resistance within range?

YES

Check wiringconnections. If OK,replace thermistor.

NO

Check sealed system.Does sealed system check

OK?

YES

Is the condenser fan running?

YES

Go to Condenser FanNot Running flowchart.

NO

Is the compressor running?Go to Compressor Not Running

flowchart.NO

YES

YES

Reset electronics by unpluggingrefrigerator for 15 seconds then

plug back in.

Unit tests OK.Run checks again. Look

for usage problem.

– 46 –

Freezer Warm - Fresh Food Normal

Check control settings and temperatures.Food at a setting of 5 and 5 with no door

openings for 12 hours should be:Fresh food 36 F to 38 F

Freezer -5 F to +5 F

Control settings OK?

Adjust settings and allow24 hours to stabilize.

NO



All OK?

YES

Repair asnecessary.

NO

Is the evaporator fan running?Go to EvaporatorFan Not Running

flowchart.NO


YES



NO


Cover flowchart.Frost

Remove blockage fromevaporator cover vent

area.Blockage



YES


NO


OK?

YES

Unit test OK.Run checks again. Look for usage

problem.

YES

Is the condenser fan running?

YES

Go to Condenser FanNot Running

flowchart.NO

Repair sealedsystem.

NO

Reset electronics byunplugging refrigerator for 15seconds then plug back in.

YES

– 47 –

Fresh Food Warm - Freezer Normal

Check control settings and temperatures.Food at a setting of 5 and 5 with no door

openings for 12 hours should be:Fresh food 36 F to 38 F

Freezer -5 F to +5 F

Control settings OK?


NO



All OK?

YES

Repair asnecessary.

NO

Is the evaporator fan running atcorrect speed?

YES


flowchart.NO


YES



NO


Cover flowchart.Frost

Remove blockage fromevaporator cover vent area.

Blockage



YES


NO


OK?

YES

Unit test OK.Run checks again. Look for

usage problem.

YES

Repair sealedsystem.

NO

Reset electronics by unpluggingrefrigerator for 15 seconds then

plug back in.

– 48 –

Fresh Food Too Cold - Freezer Normal

Check control settings andtemperatures.

Food at a setting of 5 and 5 with nodoor openings for 12 hours should

be:Fresh food 36 F to 38 FFreezer -5 F to + 5 F.

Do settings require adjustment?

Low ambienttemperature? Is the

room temperature above55 F?

NO

Advise consumer ofrefrigeration installation

requirements.NO

Verify fresh foodthermistor is within

proper range.Is resistance within

range?

YES

Check wiringconnections. If

wiring is OK, replacethermistor.

NO

YES

Unit tests OK.Run checks again. Reset electronics

by unplugging refrigerator for 15seconds. Look for usage problem.

Is evaporator fanoperating at proper

speed?

YES


flowchart.

NO

YESAdjust settings andallow 24 hours to

stabilize.

– 49 –

Compressor Not Running

Unplug refrigerator.Warm freezer thermistor to 70 F.

Connect power and settemperature controls to 5 and 5.

Does compressor start?

Check for 120 VAC atconnector J7-9 orange wireto terminal J8 black wire.

Is 120 VAC present?

NO

Adjust settingsand allow 24 hours

to stabilize.YES

Verify freezerthermistor is within

proper range.Is the resistance

within range?


YES

NO

Direct testcompressor.

Did compressorstart?

Replacecompressor.

NO

Check wiring to compressor,overload, and relay.

Replace defective part.YES

YES

Replace mainboard.

YES

– 50 –

Heavy Frost on Evaporator

Always check for door ajar,customer usage, numerous

door openings, etc.

Perform self-diagnostic test 1-4(touch panel models only,

rotary models proceed to step below).

Did unit initiate defrost?

Unplug unit from power.Unplug blue connector from

main board. Measurebetween blue wire on

connector and neutral orangewire on main board J7-9.

Are there approximately 22 ?

Check wiring harness.Check defrost heater.

Check defrost thermostat.

Check evaporatorthermistor value.

Value OK?

YES

Check wiring connections. Ifwiring OK, replace thermistor.

NO

Replace mainboard.

YES

NO

NO

YES

With doors opencheck for voltage at

J7-6 to J7-9 and J7-7to J7-9.

Voltage present?

Replace mainboard.

YES

Bad door switch orwiring. Repair as

necessary.NO

– 51 –

Refrigerator Not Responding

Are interior lights on?Check house

supply voltage.120 VAC present?

NOHouse wiring

problem.NO

Check for 120 VACat 6-pin connector

on rear of unit.120 VAC present?

YES

Repair or replacepower cord.

NO

Repair wiringconnections at 6-pin

connector.

YES

Unplug J2 connector frommain control board.

Check for 12 VDC atcontrol board pins J2-3 toJ2-8. Is voltage present?

Short in fan motor circuit.Go to fan flowchart.

Replace maincontrol board.

Unplug (temperaturecontrol).

Does refrigeratorstart?

Replace encoderboard.

Verify freezerthermistor is within

proper range.Is the resistance

within range?

Check wiringconnections. If

wiring is OK, replacethermistor.

YES

YES

NO

YES

NO

YES

NO

Does unit haveencoder or touch

panel?Is touch panel lit?Touch Panel

Can touch panelbe set to 5 and 5?

YES

YES

Check for 12 VDC atJ4-2 to 3. If no

voltage, check wiring.If wiring OK, replace

touch panel.

NO

Membrane, touchpanel, or wiring.

NOEncoder

– 52 –

Evaporator Fan Not RunningNote:• When no voltage at main control board, make certain to check for shorted fan motor (less

than 1k ohm between white and red or white and yellow). A shorted fan motor willdamage the replacement main board.

• To check fan speed, refer to evaporator fan speed information on page 20.

Open door and leave openfor 3 minutes to initiate liner

protection mode.Does fan begin running?

Unplug refrigerator to resetmain control board.

Reconnect power. Warmfreezer thermistor to 70 F

and set temperature controlsto 5 and 5.

Did evaporator fan start?

NO

At the fan connector, checkfor 13 VDC from the red towhite wire and 8 to 13 VDC

from the white to yellow wire.Is the voltage correct for

both?

Unplug J2 connector on themain control board. Checkfor 13 VDC between pins

J2-3 and J2-4.Is the voltage correct for

both?


NO

NO

Repair wiring betweenmain control board andevaporator fan motor.

YES

Replaceevaporator fan

motor.YES

Check fan for obstruction.Find obstruction?

NO

Removeobstruction.

YES


YES

Check thermistorsusing thermistorvalues or self-

diagnostic test 0-7.Thermistors pass

Test?

Replace mainboard.

YES

NO

YES


NO

– 53 –

Condenser Fan Not RunningNote:• Compressor and condensor fan should always operate at the same time.• When no voltage at main control board, make certain to check for shorted fan motor (less

than 1k ohm between white and red or white and yellow). A shorted fan motor willdamage the replacement main board.

Check fan for obstruction.

Unplug the refrigerator toreset main control board. Warm freezer thermistor

to 70 F. Reconnectpower and set

temperature controls to 5and 5. Recheck voltage.

Is voltage correct?

Replace condenserfan motor.

Repair wiring betweenmain control board andcondenser fan motor.

Unplug J2connector on the

main control board.Check for 13 VDCbetween pins J2-3and J2-5 and 11-13VDC between pins

J2-3 and J2-8.Is voltage correct for

both?

At the condenserfan connector,

check for 13 VDCfrom the red to

white wire and 11-13 VDC from white

to yellow wire.Is voltage correct

for both?

YES


YES

NO

NO

NO

Adjust settings and allow24 hours to stabilize.YES

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