Whirlpool MULLION EVAPORATOR DESIGN User Manual
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Whirlpool MULLION EVAPORATOR DESIGN User Manual

Whirlpool MULLION EVAPORATOR DESIGN User Manual

Apartment maintenance series top-mount refrigerator/freezers
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CONSUMER SERVICES TECHNICAL
AM-4
EDUCATION GROUP PRESENTS
ORPORATION
APARTMENT MAINTENANCE SERIES
TOP-MOUNT
REFRIGERATOR/FREEZERS
"MULLION EVAPORATOR
DESIGN"
12 cu. ft.
"OLD DESIGN"
14 cu. ft.
"NEW DESIGN"
14 cu. ft.
"MID-LINE DESIGN"
16 thru 22 cu. ft.
Job Aid
Part No. 4322309
I

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  • Page 1 CONSUMER SERVICES TECHNICAL AM-4 EDUCATION GROUP PRESENTS ORPORATION APARTMENT MAINTENANCE SERIES TOP-MOUNT REFRIGERATOR/FREEZERS “MULLION EVAPORATOR DESIGN” 12 cu. ft. “OLD DESIGN” 14 cu. ft. “NEW DESIGN” 14 cu. ft. “MID-LINE DESIGN” 16 thru 22 cu. ft. Job Aid Part No. 4322309...

  • Page 2: Introduction

    Four distinct series of top-mount refrigerator/freezers will be covered. See Page V for more details: 1) 12 cu. ft. “Mullion Evaporator Design” - These units are available as Roper Brand only and have the evaporator located in the mullion divider between the freezer and refrigerator sections.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS................. III SAFETY ......................IV PRODUCT IDENTIFICATION ................ V SECTION ONE - SECTION ONE - SECTION ONE - “Mullion Evaporator Design” 12 cu. ft. Top-Mount SECTION ONE - SECTION ONE - INSTALLATION CONSIDERATIONS ............1 THEORY OF OPERATION................ 4 COMPONENT ACCESS ................

  • Page 4: Safety

    SAFETY WARNING To avoid the risk of electrical shock, property damage, personal injury or death: • The power cord must be plugged into a 3-prong grounding-type wall receptacle, grounded in accordance with the National Electrical Code, ANSI/NFPA 70 - latest edition, and local codes and ordinances.

  • Page 5: Product Identification

    B) Type of condenser C) Location of the Evaporator D) Method of outside condensation control Louvers at Front of 12 cu. ft. “Mullion Evaporator Design” - Freezer Floor Distinguishing Characteristics: • Air return louvers located at the front of the freezer floor.
  • Page 6 -- NOTES --...

  • Page 7: Section One

    Section One “Mullion Evaporator Design” 12 cu. ft. Top-Mount INSTALLATION CONSIDERATIONS Minimum Clearance Measure the opening at the location in which the refrigerator/freezer is to be installed and make sure the following minimum clearance dimensions are followed. Top: At least 3” (7.5cm) clearance between the overhead cabinet and the refrigerator/ freezer top.

  • Page 8: Electrical Requirements

    Do not remove any grounding wires Receptacle from individual components while servicing, unless the component is to be removed and replaced. It is extremely important to replace all grounding wires when components 3-Prong are replaced. Grounding Plug MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...

  • Page 9: Door Swing Reversal

    Hinge Hole Plug c) Tighten the top hinge. Hinge Bushing Plug Plastic Washer Center Hinge Handle Door Stop Fiber Washer Handle Insert Handle Hole Plug Fiber Washer Door Stop Bottom Hinge Fig. 5 MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...

  • Page 10: Theory Of Operation

    Always wear a pair of clean gloves when handling the defrost heater assembly. Contaminating the surface of the quartz tube will cause premature failure. Fig. 7 Fig. 8 MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...
  • Page 11 It then loops through the mullion between the refrigerator and freezer sections (B) and up around the freezer section (C & D), where it then returns to component compartment (E) and connects to the sealed system at the filter-drier. (Fig. 9) HEAT LOOP Fig. 9 MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...

  • Page 12: Component Access

    Disconnect the electrical power before servicing any components. Failure to do so can result in death or electrical shock. EVAPORATOR EVAPORATOR DEFROST HEATER BI-METAL CONDENSER THERMOSTAT COMPRESSOR DRIP PAN/ COMPRESSOR BASE Fig. 10 MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...
  • Page 13 3. Follow standard Sweep Charge Procedures for replacing the compressor. 4. Slide the component tray back into the unit and secure it with to the cabinet the four (4) screws removed earlier. MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...
  • Page 14 2. Remove the two (2) screws securing the evaporator fan motor bracket to the fan scroll. 3. The fan blade is pressed onto the motor shaft. The motor shaft should not extend past the fan blade hub. MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...
  • Page 15 Wear a pair of clean soft gloves. 6. Reinstall the defrost heater drip cover and secure it in place by bending the mounting bracket tabs down. MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...

  • Page 16: Wiring Diagrams And Strip Circuits

    WIRING DIAGRAM STRIP CIRCUITS COOLING CYCLE Compressor Circuit (at instant of start) MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...

  • Page 17: Defrost Cycle

    Compressor Circuit (running) Defrost Timer Motor Circuit Evaporator Fan Motor Circuit DEFROST CYCLE Defrost Timer and Defrost Heater Circuit REFRIGERATOR LIGHT Refrigerator Light Circuit MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...
  • Page 18 -- NOTES -- MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount...

  • Page 19: Section Two

    Section Two “Old Design” 12 & 14 cu. ft. Top-Mount INSTALLATION CONSIDERATIONS Minimum Clearance Measure the opening at the location in which the refrigerator/freezer is to be installed and make sure the following minimum clearance dimensions are followed. Top: At least 3” (7.5cm) clearance between the overhead cabinet and the refrigerator/ freezer top.
  • Page 20 Once the unit is located in the final installed location and the rear of the unit is level, proceed to level the front. NOTE: When leveling the front of the unit, the front should be ½ bubble higher than the back. 1.

  • Page 21: Door Alignment

    Door Alignment Occasionally, the refrigerator or freezer doors may need to be realigned. Evidence of improp- erly aligned doors includes a generally poor appearance of the unit and/or sweating/frosting on both the inside and outside of the cabinet due to poor gasket seal. Fig.
  • Page 22 Door Swing Reversal 1. Open the refrigerator door and remove the toe Spacer panel at the bottom of the unit. 2. Remove the top hinge. (Fig. 20) 3. Remove the freezer door. 4. Remove the center hinge. (Fig. 20) Spacer 5.

  • Page 23: Theory Of Operation

    THEORY OF OPERATION MULLION AND STILE HEATERS All refrigerators have a tendency to sweat around the door openings due to the differences between the ambient room temperature and the cold compartments of the refrigerator. On “Old Design” units low-wattage resistance heaters are installed to the front flange area of the cabinet to help prevent sweating.

  • Page 24: Air Circulation

    AIR CIRCULATION The evaporator fan circulates air inside the refrig- erator and freezer sections. ( Fig. 24) Most of the air circulates inside the freezer compartment, and returns to the evaporator from slots in the front and rear of the freezer floor. The return air travels be- tween the floor and the liner, where it joins other return air at the back, flowing beneath the evapora- tor cover and up through the evaporator coil.

  • Page 25: Component Access

    COMPONENT ACCESS Component Location WARNING ELECTRIC SHOCK HAZARD Disconnect the electrical power before servicing any components. Failure to do so can result in death or electrical shock. EVAPORATOR EVAPORATOR CONDENSER COLLECTOR COMPRESSOR Fig. 25 OLD DESIGN 12 & 14 cu. ft. Top-Mount...
  • Page 26 Servicing the Defrost Timer and Thermostat Removing the Control Box The Control box is attached to the bottom of the divider wall separating the freezer and refrigerator compartments. The control box contains the defrost timer and the operating thermostat. 1. Remove the two (2) mounting screws securing the front of the control box to the bottom of the separator.
  • Page 27 Servicing the Thermostat SENSOR TUBE The thermostat is mounted in the cross rail area by two (2) mounting screws. When removing the thermostat the sensing tube will also have to be removed. The sensing tube is THERMOSTAT routed back to the deffuser. To access the sensing tube, remove the two (2) screws securing the deffuser cover.
  • Page 28 Servicing the Defrost Heater The defrost heater is located on the left side and bottom of the evaporator and is held in place by two slotted retainers at the bottom of the evaporator. 1. Release the evaporator from its position by first pulling the two plastic retaining clips from the bosses that secure the evaporator to the heat shield.
  • Page 29 Servicing the Mullion Heater The electrical mullion rail heater can be replaced and can be accessed by removing the mullion rail cover. 1. Remove the doors following the procedures described in earlier in this section. 2. Remove the two screws on the opposite side of the mullion from the hinges. 3.

  • Page 30: Wiring Diagrams And Strip Circuits

    WIRING DIAGRAM (Early Mullion & Stile Heater Design) STRIP CIRCUITS (Early Mullion & Stile Heater Design) COOLING CYCLE Compressor Circuit (at instant of start) Compressor Circuit (running) OLD DESIGN 12 & 14 cu. ft. Top-Mount...
  • Page 31 Defrost Timer Motor Circuit Evaporator Fan Motor Circuit DEFROST CYCLE Defrost Heater Circuit Defrost Timer Motor Circuit OLD DESIGN 12 & 14 cu. ft. Top-Mount...
  • Page 32 REFRIGERATOR LIGHT CIRCUIT MULLION HEATER CIRCUIT OLD DESIGN 12 & 14 cu. ft. Top-Mount...
  • Page 33 “OLD DESIGN” 14 cu. ft. TOP-MOUNT WIRING DIAGRAM (Recent Mullion & Stile Heater Design) OLD DESIGN 12 & 14 cu. ft. Top-Mount...
  • Page 34 “OLD DESIGN” 14 cu. ft. TOP-MOUNT STRIP CIRCUITS (Recent Mullion & Stile Heater Design) COOLING CYCLE Compressor Circuit (at instant of start) Compressor Circuit (running) Defrost Timer Motor Circuit Evaporator Fan Motor Circuit OLD DESIGN 12 & 14 cu. ft. Top-Mount...
  • Page 35 DEFROST CYCLE Defrost Heater Circuit Defrost Timer Motor Circuit Mullion and Stile Heater Circuit REFRIGERATOR LIGHT CIRCUIT MODULAR ICE MAKER CIRCUIT OLD DESIGN 12 & 14 cu. ft. Top-Mount...
  • Page 36 “OLD DESIGN” 14 cu. ft. TOP-MOUNT WIRING DIAGRAM (Adaptive Defrost Control with Current Mullion & Stile Heater Design) COOLING CYCLE Energizing Electronic Defrost Control OLD DESIGN 12 & 14 cu. ft. Top-Mount...
  • Page 37 Compressor Circuit (at instant of start) ELECTRONIC DEFROST CONTROL Compressor Circuit (at instant of start) ELECTRONIC DEFROST CONTROL Monitoring Compressor Run-Time ELECTRONIC DEFROST CONTROL DEFROST CYCLE Defrost Heater Circuit ELECTRONIC DEFROST CONTROL Monitoring Defrost Heater Run-Time ELECTRONIC DEFROST CONTROL OLD DESIGN 12 &...

  • Page 38: Modular Ice Maker

    MULLION AND STILE HEATER CIRCUIT ELECTRONIC DEFROST CONTROL EVAPORATOR FAN MOTOR CIRCUIT ELECTRONIC DEFROST CONTROL REFRIGERATOR LIGHT CIRCUIT MODULAR ICE MAKER OLD DESIGN 12 & 14 cu. ft. Top-Mount...

  • Page 39: Section Three

    Section Three “New Design” 14 cu. ft. Top-Mount INSTALLATION CONSIDERATIONS Minimum Clearance Measure the opening at the location in which the refrigerator/freezer is to be installed and make sure the following minimum clearance dimensions are followed. Top: At least 3” (7.5cm) clearance between the overhead cabinet and the refrigerator/ freezer top.
  • Page 40 Once the unit is located in the final installed location and the rear of the unit is level, proceed to level the front. NOTE: When leveling the front of the unit, the front should be ½ bubble higher than the back. 1.
  • Page 41 Door Alignment Occasionally, the refrigerator or freezer doors may need to be realigned. Evidence of improp- erly aligned doors includes a generally poor appearance of the unit and/or sweating/frosting on both the inside and outside of the cabinet due to poor gasket seal. 1.
  • Page 42 Door Swing reversal 1. Open the refrigerator door and remove the toe Spacer panel at the bottom of the unit. 2. Remove the top hinge. (Fig. 42) 3. Remove the freezer door. 4. Remove the center hinge. (Fig. 42) 5. Remove the refrigerator door. Spacer Screw 6.

  • Page 43: Theory Of Operation

    THEORY OF OPERATION Heat Loop Routing The heat loop enters the cabinet through a grommet at the bottom and bends to the left side (1). It then angles up to the front of the cabinet (2). At the separator between the refrigerator and freezer compartments, the loop turns right and travels across the mullion (3);...
  • Page 44 Air Circulation The evaporator fan circulates air inside of the refrigerator and freezer section. (Fig. 45) Most of the air circulates in the freezer compartment, where it travels to the front and passes through the series of slots in the inner floor. The air then travels toward the back of the freezer between the inner floor and the liner, where it passes under the evaporator cover, across the evaporator coils and back into the freezer through a series of slots in the air tower.

  • Page 45: Component Access

    COMPONENT ACCESS Component Location WARNING ELECTRIC SHOCK HAZARD Disconnect the electrical power before servicing any components. Failure to do so can result in death or electrical shock. AIR TOWER EVAPORATOR EVAPORATOR CONDENSER COLLECTOR COMPRESSOR Fig. 46 NEW DESIGN 14 cu. ft. Top-Mount...
  • Page 46 Removing the Control Box The Control box is attached to the bottom of the divider wall separating the freezer and refrigerator compartments. The control box contains the defrost timer and the operating thermostat. 1. Open the refrigerator door and slide the top shelf out. 2.
  • Page 47 Servicing the Thermostat 1. Pull the knob off the thermostat control. 2. Unclip the sensor tube from the groove at the back of the control box. 3. Lift the thermostat out of the tabs securing it to the control box. 4.
  • Page 48 PHILLIPS PHILLIPS SCREWS SCREWS Fig. 51 5. Press against the top of the air tower and disengage the two (2) clips from the evaporator cover. Then, lift the tower and pull it forward to release the four (4) hooks and remove the tower.
  • Page 49 WHITE WIRE INSET GREEN WIRE RED WIRE FAN MOUNTING SCREW Fig. 53 Servicing the Bi-Metal 1. Unclip the Bi-Metal from the evaporator inlet tube. (Fig. 54) 2. Disconnect the wiring harness plug from the bi-metal connector. BI-METAL HARNESS CONNECTOR INSET Fig.
  • Page 50 EVAPORATOR DEFROST HEATER PLUG DEFROST HEATER ELEMENT DISCONNECT HARNESS PLUG SLIDE DEFROST EVAPORATOR CUT HERE HEATER HEATER & BEND BRACKET DOWN DEFROST DEFROST HEATER HEATER INSET Fig. 55 Adjusting the Air Tower The air tower has three temperature slots that allow an increase or decrease in the cold air flow to vary the temperature inside the freezer.
  • Page 51 For A Colder Setting See Figure 56 for the following. Carefully raise the top of the rear panel of the air tower just far enough to lift the side tab out of the slot marked “MID,” then slide the panel so that the slot marked “COLDER” is lined up with the tab. Press firmly against the slot in the panel until the tab breaks through the plastic web.

  • Page 52: Wiring Diagrams And Strip Circuits

    WIRING DIAGRAM STRIP CIRCUITS COOLING CYCLE Compressor Circuit (at instant of start) NEW DESIGN 14 cu. ft. Top-Mount...
  • Page 53 Compressor Circuit (running) Defrost Timer Motor Circuit Evaporator Fan Motor Circuit DEFROST CYCLE Defrost Heater Circuit NEW DESIGN 14 cu. ft. Top-Mount...
  • Page 54 Defrost Timer Motor Circuit REFRIGERATOR LIGHT CIRCUIT MODULAR ICE MAKER CIRCUIT NEW DESIGN 14 cu. ft. Top-Mount...

  • Page 55: Section Four

    Section Four “Mid-Line Design” 16 thru 22 cu. ft. Top-Mount INSTALLATION CONSIDERATIONS Minimum Clearance Measure the opening at the location in which the refrigerator/freezer is to be installed and make sure the following minimum clearance dimensions are followed. Top: At least 3” (7.5cm) clearance between the overhead cabinet and the refrigerator/ freezer top.
  • Page 56 Once the unit is located in the final installed location and the rear of the unit is level, proceed to level the front. NOTE: When leveling the front of the unit, the front should be ½ bubble higher than the back. 1.
  • Page 57 Door Alignment TOP HINGE Occasionally, the refrigerator or freezer doors Cover may need to be realigned. Evidence of improp- erly aligned doors includes a generally poor appearance of the unit and/or sweating/frosting on both the inside and outside of the cabinet due to poor gasket seal.
  • Page 58 Door Swing reversal 1. Open the refrigerator door and remove the toe Spacer panel at the bottom of the unit. 2. Remove the top hinge. (Fig. 62) 3. Remove the freezer door. 4. Remove the center hinge. (Fig. 62) 5. Remove the refrigerator door. Spacer Screw 6.

  • Page 59: Theory Of Operation

    THEORY OF OPERATION Heat Loop Routing The heat loop enters the cabinet through a grommet at the bottom and bends to the left side (1). It then angles up to the front of the cabinet (2). At the separator between the refrigerator and freezer compartments, the loop turns straight up, traveling behind the left front flange (3);...
  • Page 60 Air Circulation The evaporator fan circulates air inside of the refrigerator and freezer sections. ( Fig. 65) Most of the air circulates inside the freezer compartment, and returns to the evaporator from two directions. The first route is through a series of slots between the evaporator cover and the rear edge of the freezer floor, where it passes under the evaporator cover, and up through the evaporator coil.

  • Page 61: Component Access

    COMPONENT ACCESS Component Location WARNING ELECTRIC SHOCK HAZARD Disconnect the electrical power before servicing any components. Failure to do so can result in death or electrical shock. TOWER EVAPORATOR CONTROL DEFROST TIMER THERMOSTAT DAMPER COLLECTOR CONDENSER COMPRESSOR CONDENSER Fig. 66 MID-LINE DESIGN 16 thru 22 cu.
  • Page 62 Servicing the Defrost Timer and Thermostat Removing the Control Box The control box is attached to the bottom of the divider wall separating the freezer and refrigerator compartments. The control box contains the defrost timer and the operating thermostat. 1. Open the refrigerator door and remove the top shelf. 2.
  • Page 63 Servicing the Defrost Timer Early Production Models: PUSH ON LOCKING 1. Press out on the locking arm and slide ARM TO REMOVE the defrost timer out from under the DEFROST TIMER HOLDING holding tabs. TABS DEFROST 2. Disconnect the wiring harness plug from TIMER the terminals of the defrost timer and remove the defrost timer from the...
  • Page 64 INSET FORM LOOP HERE ADHESIVE FOAM COVER THERMAL DAMPER WEIGHT THERMAL WIRE WEIGHT UNCLIP TO ACCESS REMOVE PULL BRACKET THERMOSTAT OUT OF SLOT SLOT ORANGE WIRE SLOT SENSOR TUBE FITS INTO SLOT HERE UNCLIP BRACKET GREEN WIRE Fig. 71 Servicing the Freezer Section Removing the Freezer Light Assembly Early Production Models Some early Production Models of Mid-Line Refrigerators were equipped with a magnetically oper-...
  • Page 65 Door Switch Assembly 1. Slide the cover forward on the front of the freezer light assembly and remove it. 2. Remove the screw from the front of the freezer light assembly. Drop the assembly down to work on the components inside the assembly. The wiring harness will remain attached at this point.
  • Page 66 Current Production Models: Current Production Models of Mid-Line Refrigerators are equipped with a rocker switch located at the front of the light switch assembly. 1. Remove the screw from the bottom of the freezer light assembly. (Fig. 74) Drop the assem- bly down to work on the components inside the assembly.
  • Page 67 Removing the Freezer Floor and Evaporator Cover Access to the component behind the evaporator cover and removing the air tower can be accom- plished by removing the freezer floor and evaporator cover. Removing the Freezer Floor 1. Remove the ice cube tray, bin and shelf (if present) or remove the automatic ice maker. 2.
  • Page 68 Servicing the Evaporator Fan Motor 1. Remove the harness wires from the clips at the top of the fan motor bracket. (Fig. 76) 2. Remove the four (4) hex-head screws securing the fan motor bracket to the rear liner of the freezer.
  • Page 69 Servicing the Defrost Heater The Defrost Heater is located behind the evaporator cover, and wraps around the bottom half of the evaporator. The Defrost Heater is a single element with one electrical connection on the left side of the evaporator and the other connection on the right. The wiring harness connector for the Defrost heater is located next to the terminal block on the left side of the rear freezer liner.

  • Page 70: Wiring Diagrams And Strip Circuits

    WIRING DIAGRAM (Neutral Path To Defrost Timer Motor through Defrost Heater and Compressor Run Winding) STRIP CIRCUITS COOLING CYCLE Compressor Circuit (at instant of start) MID-LINE DESIGN 16 thru 22 cu. ft. Top-Mount...
  • Page 71 Compressor Circuit (running) Defrost Timer Motor Circuit Evaporator Fan Motor Circuit Condenser Fan Motor Circuit MID-LINE DESIGN 16 thru 22 cu. ft. Top-Mount...
  • Page 72 DEFROST CYCLE Defrost Heater Circuit Defrost Timer Motor Circuit REFRIGERATOR LIGHT CIRCUIT MODULAR ICE MAKER CIRCUIT MID-LINE DESIGN 16 thru 22 cu. ft. Top-Mount...
  • Page 73 WIRING DIAGRAM (Direct Neutral Path to Defrost Timer Motor) MID-LINE DESIGN 16 thru 22 cu. ft. Top-Mount...
  • Page 74 “MID-LINE DESIGN” 16 & 18 cu. ft. TOP-MOUNT STRIP CIRCUITS (Direct Neutral Path to Defrost Timer Motor) COOLING CYCLE Compressor Circuit (at instant of start) Compressor Circuit (running) Defrost Timer Motor Circuit Evaporator Fan Motor Circuit Condenser Fan Motor Circuit MID-LINE DESIGN 16 thru 22 cu.
  • Page 75 DEFROST CYCLE Defrost Timer and Defrost Heater Circuit REFRIGERATOR LIGHT CIRCUIT MODULAR ICE MAKER MID-LINE DESIGN 16 thru 22 cu. ft. Top-Mount...
  • Page 76 --NOTES -- MID-LINE DESIGN 16 thru 22 cu. ft. Top-Mount...

  • Page 77: General

    Section Five TROUBLESHOOTING AND DIAGNOSIS GENERAL HEAVY WARM LOAD WARM ROOM The amount of warm food placed in the refrigera- 1. A warm room or other large source of heat tor affects running time and power consumption. (such as a range, heater, hot air duct, sunny Ordinarily, when a supply of food is placed in a window) can affect the performance of the re- refrigerator, it will operate continuously until the...

  • Page 78: Sealed System Diagnosis

    SEALED SYSTEM DIAGNOSIS REVIEW Entering and properly processing the sealed refrigeration system requires special equipment and should only be accomplished by a qualified service technician. Before suspecting that the sealed refrigeration system has failed, be sure to check out all other possi- bilities as described in the following Troubleshooting Chart on pages 73-79.

  • Page 79: Troubleshooting Chart

    TROUBLESHOOTING CHART PROBLEM CAUSE PROCEDURE Compressor will not start 1.Service cord unplugged 1.Plug in electrical outlet 2.No power at outlet 2.Check to confirm 120VAC, 60 Hz at out- (Parts of this diagnosis and let. service procedure must be performed by a qualified 3.Thermostat: refrigeration system service a.Turned off...
  • Page 80 PROBLEM CAUSE PROCEDURE Compressor runs, but no 2.Moisture Restriction 2.Call for a qualified service technician. refrigeration or insufficient 3.Permanent Restriction 3.Call for a qualified service technician. refrigeration. (con’t.) 4.Low Charge or No Charge 4.Call for a qualified service technician. (This diagnosis and service 5.No Capacity or Low- 5.Call for a qualified service technician.
  • Page 81 PROBLEM CAUSE PROCEDURE Freezer compartment too 5.Interior air circulation warm (con’t.) a.Evaporator Fan not a.Check evaporator fan motor winding, running replace if defective. b.Restriction in air ducts b.Remove obstruction in ducts. c.Air control open too wide c. Adjust rear panel on air tower. 6.Abnormal use 6.Instruct customer 7.Bad door seal or door not...
  • Page 82 PROBLEM CAUSE PROCEDURE Freezer compartment too cold 1.Thermostat a.Set too cold a.Turn knob to lower number. b.Sensing tube not properly b. See that sensing tube is covered by positioned barrier and properly located. c.Out of calibration or not c. Check thermostat for cut-in and cu-tout functioning temperatures, recalibrate or replace.
  • Page 83 DIAGNOSTIC TESTS PROBLEM PROCEDURE READINGS COMPRESSOR 1.Touch probes of ohmmeter 1.Meter should read 1Ω to 5Ω to M and C terminals 2.Touch probes of ohmmeter 2.Meter should read 3Ω to 11Ω to S and C terminals 3. Ground Test: Touch one 3.Infinity for each check.
  • Page 84 PROBLEM PROCEDURE READINGS TIMER (continued) DEFROST MODE NOTE: The production timer 1.Set the ohmmeter to the (Paragon) has a 10 hour Rx1 scale and zero the cumulative run time with a 21- meter. minute defrost duration. 2.Touch the meter probes to The meter should read “zero”...
  • Page 85 PROBLEM PROCEDURE READINGS DEFROST HEATER Locate the test terminals Meter should read 19Ω to 35Ω nominal inside the control box. (Brown resistance. and Pink wires) Touch the meter probes to the ends of Brown wire and the Neutral side of the plug wires (any White wire terminal.) Ground Test: Touch one The meter should read “infinity”.

  • Page 86: Typical Testing Procedures

    TYPICAL TESTING PROCEDURES Electromechanical Defrost Timer The Defrost Timer Motor and Switch can be tested in Electromechanical Defrost Timers. To Test the Timer Switch: 1. Disconnect the wiring harness plug from the defrost timer. 2. Rotate the timer cam until you hear a click. (This puts it in the defrost cycle.) 3.
  • Page 87 Thermostat The Thermostat can be tested with an Ohmmeter. To Test the Thermostat: 1. Disconnect the wire connectors from the thermostat terminals. 2. Set it to the ON position. 3. Set the volt-ohm meter to the Rx1 scale. 4. Place the probes of a VOM on the two terminals. The VOM should read continuity. 5.

  • Page 88: Evaporator Fan Motor

    Evaporator Fan Motor The Evaporator fan motor can be tested with an ohmmeter set on the Rx1K scale. To test the Evaporator Fan Motor: 1. Disconnect the wire connectors from the fan motor terminals. 2. Place the probes on the two outer terminals of the fan motor.
  • Page 89 The Bi-Metal can be tested by using the test lead plug located in the control box. The test lead plug is connected to a brown and a pink wire. To Test the Bi-Metal: (All models except Mullion Evaporator Design) 1. Follow the procedure for removing the control box on the specific unit being serviced.
  • Page 90 Defrost Heater (All models except Mullion Evaporator Design) The Defrost heater can be tested with an ohmmeter set on the Rx1K scale. To Test the Defrost Heater: 1. Follow the procedure for removing the control box on the specific unit being serviced.
  • Page 91 Testing Start Testing Winding Winding Compressor Terminal Configurations M(R) M(R) Testing for M(R) Short to Ground...
  • Page 92 Overload The Overload can be tested with an ohmmeter set on the Rx1 scale. To Test the Overload: 1. Locate the overload mounted to the compressor and remove it. Disconnect all wire leads. 2. Set the volt-ohm meter to the Rx1 scale. 4.

  • Page 93: Run Capacitor

    If VOM shows infinity (open circuit) the PTC Start Relay is defective. 4. If the compressor, overload and PTC relay pass these tests and the unit still will not start, call an authorized Whirlpool Service Technician. Relay Run Capacitor The Run Capacitor can be tested with an ohmmeter set on the Rx10K scale.
  • Page 94 CONFIRMATION OF LEARNING EXERCISE Place an X in the blank next to the correct answer(s) to the following servicing situations. 1. The customer complains that the compres- 5. If you are testing the start winding of the sor will not start. Which of the following compressor, what should the meter reading could be the cause of the problem? ____ A.

  • Page 95: Section Six - Tech Tips

    Section Six TECH TIPS REPLACING ELECTROMECHANICAL TIMERS The current universal defrost timer kit (Part No. 482493) will work as a service replacement in units where the timer motor circuit is routed through the run winding of the compressor to neutral and in units where the timer motor circuit is routed directly to neutral.

  • Page 96: Door Gasket Replacement

    DOOR GASKET REPLACEMENT Beginning in 1993 all Mid-Line Top-Mount Refrigerator/Freezers are equipped with Foamed-In-Place (FIP) doors. FIP refers to the manufacturing process of first assembling the door’s outer panel, inner liner and gasket, and then injecting foam between the outer panel and the inner liner. The gasket is held in place by the lip of the inner liner and the adhesion of the foam.
  • Page 97 4. DO NOT PULL ON THE GASKET. This action will pull the interior door liner away from the exterior door panel. To remove the gasket, pull away from the door. 5. With the gasket removed, use a putty knife to clean any debris from between the lip of the inner liner and outer panel.
  • Page 98 2. Using your fingers, snap the gasket into place under the lip of the inner liner. If a section of the gasket does not readily tuck under the lip, use a small edged roller or blunt flat object to push the gasket into place. 3.
  • Page 99 Repair Procecure: 1. Make sure the base of the gasket is tucked under the lip of the inner liner. DO NOT PULL UP ON THE INNER LINER. 2. Gently roll the gasket over to expose the edge of the inner liner and locate the dimples molded into the lip of the inner liner that will be used to locate where the screws will be installed.

  • Page 100: Servicing The Adaptive Defrost Control

    SERVICING THE ADAPTIVE DEFROST CONTROL CAUTION STATIC ELECTRICITY DISCHARGE MAY CAUSE DAMAGE TO THIS ELECTRONIC BOARD. • Use an anti-static wrist strap. Connect wrist strap to green ground connection point or unpainted metal in the appliance. • Touch your finger repeatedly to a green ground connection point or unpainted metal in the appliance.

  • Page 101: Serial And Model Number Designators

    1. When replacing original part number 2154958, 2169267 or 2169269 the following step must be made: 2. Remove the resistor marked R17 by cutting in two places with wire cutters as shown below. CUT AND REMOVE THIS SECTION SERIAL and MODEL NUMBER DESIGNATORS WHIRLPOOL SERIAL NUMBERS 10003 SERIAL NUMBER MANUFACTURER/LOCATION E = Evansville VS = Vitro-Supermatic EW = W.C.
  • Page 102 WHIRLPOOL MODEL NUMBERS Refrigerators (1982 - 1986) MODEL NUMBER MARKET CHANNEL (If Present) PRODUCT GROUP E = Refrigeration PRODUCT IDENTIFICATION T = 2 Door, Top-Mount Freezer CAPACITY 14 = 14 cu. ft. MODEL TYPE OR DEFROST METHOD A = Princess Series P = 24”...
  • Page 103 WHIRLPOOL MODEL NUMBERS Refrigerators (1987 to Present) MODEL NUMBER MARKET CHANNEL (If Present) PRODUCT GROUP E = Refrigeration PRODUCT IDENTIFICATION T = Top-Mount Freezer CAPACITY 14 = 14 cu. ft. MODEL TYPE OR DEFROST METHOD A = Princess-Wire Powder N = Special - wire...
  • Page 104 YEAR CODE ROPER SERIAL NUMBERS 0 = 1980/2010 E = 1995/2025 10003 1 = 1981/2011 F = 1996/2026 SERIAL NUMBER 2 = 1982/2012 G = 1997/2027 3 = 1983/2013 H = 1998/2028 MANUFACTURER/LOCATION 4 = 1984/2014 J = 1999/2029 E = Evansville VS = Vitro-Supermatic 5 = 1985/2015 K = 2000/2030...
  • Page 105 YEAR CODE ESTATE/HOLIDAY SERIAL NUMBERS 0 = 1980/2010 E = 1995/2025 10003 1 = 1981/2011 F = 1996/2026 SERIAL NUMBER 2 = 1982/2012 G = 1997/2027 3 = 1983/2013 H = 1998/2028 MANUFACTURER/LOCATION 4 = 1984/2014 J = 1999/2029 E = Evansville VS = Vitro-Supermatic 5 = 1985/2015 K = 2000/2030...
  • Page 106 ANSWERS TO CONFIRMATION OF LEARNING EXERCISE Section Five TROUBLESHOOTING AND DIAGNOSIS 1. The customer complains that the compres- 5. If you are testing the start winding of the sor will not start. Which of the following compressor, what should the meter reading could be the cause of the problem? ____ A.
  • Page 108 CORPORATION VIII...

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