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Whirlpool KM-30 8178573 User Manual
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Whirlpool KM-30 8178573 User Manual

Whirlpool KM-30 8178573 User Manual

Microwave oven hood combination
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KM-30
MICROWAVE
OVEN HOOD
COMBINATION
8178573


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Summary of Contents for Whirlpool KM-30 8178573

  • Page 1 KM-30 MICROWAVE OVEN HOOD COMBINATION 8178573...
  • Page 2 This Job Aid, “Whirlpool Microwave Oven Hood Combination,” (Part No. 8178573), provides the In Home Service Professional with information on the operation and service of the Whirlpool Micro- wave Oven Hood Combination. It is to be used as a training Job Aid and Service Manual. For specific information on the model being serviced, refer to the “Use and Care Guide,”...

  • Page 3: Table Of Contents

    Precautions To Be Observed Before and During Servicing to Avoid Possible Exposure to Excessive Microwave Energy .......... 1-3 R.F. Leakage Test ......................1-4 Whirlpool Model Number Designations ................1-5 Whirlpool Serial Number Designations ................1-6 Model & Serial Number Label and Tech Sheet Locations ..........1-6 Specifications ........................
  • Page 4 TABLE OF CONTENTS - CONTINUED Turntable Motor ......................... 5-3 Humidity Sensor ....................... 5-4 Hood Exhaust Fan Motor ....................5-4 AC Line Filter ........................5-5 Thermostats ........................5-5 DIAGNOSIS & TROUBLESHOOTING ..................6-1 Interlock Switch Checkout Procedures ................6-1 Touch Panel and Electronic Control Test ................6-2 Microwave Oven Power Output Test ................

  • Page 5: General

    GENERAL ImPORTANT SAFETY INFORmATION ELECTROSTATIC DISCHARGE (ESD) SENSITIVE ELECTRONIC ESD problems are present everywhere. ESD may damage or weaken the electronic control assembly. The new control assembly may appear to work well after repair is finished, but failure may occur at a later date due to ESD stress.

  • Page 6: Warning To In Home Service Professionals

    WARNING TO IN HOmE SERVICE PROFESSIONALS To avoid possible exposure to microwave Whirlpool microwave ovens have a monitoring radiation or energy, visually check the oven for system designed to ensure proper operation of damage to the door and door seal before the safety interlock systems.

  • Page 7: Precautions To Be Observed Before And During Servicing To Avoid Possible Exposure To Excessive Microwave Energy

    PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE ExPOSURE TO ExCESSIVE mICROWAVE ENERGY D. Any defective or misadjusted components A. Do not operate or allow the oven to be operated with the door open. in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or B.

  • Page 8: R.f. Leakage Test

    R.F. LEAkAGE TEST EQUIPmENT NOTE: Enter leakage readings in BEFORE and AFTER spaces on the service document. • Electromagnetic energy leakage monitor (NARDA 81 00B, HOLADAY H 1501 ). All microwave ovens exceeding the emission level of 4 mw/cm2 must be reported to Dept. of •...

  • Page 9: Whirlpool Model Number Designations

    WHIRLPOOL mODEL NUmBER DESIGNATIONS mODEL NUmBER INTERNATIONAL SALES IND. OR MARKETING CHANNEL IF PRESENT PRODUCT GROUP G = WHIRLPOOL GOLD M = MICROWAVE PRODUCT IDENTIFICATION B = BROWNER C = CONVECTION G = GRILL / CRISPER H = OTR HOOD COMBO...

  • Page 10: Whirlpool Serial Number Designations

    WHIRLPOOL SERIAL NUmBER DESIGNATIONS SERIAL NUmBER 10001 mANUFACTURING SITE TR = Shunde YEAR OF PRODUCTION T = 2006 WEEk OF PRODUCTION 06 = 6th week of the year PRODUCT SEQUENCE NUmBER mODEL & SERIAL NUmBER LABEL AND TECH SHEET LOCATIONS model &...

  • Page 11: Specifications

    SPECIFICATIONS MODEL MH2175XS Featur e Level/Ser ies SENSOR Cooking White, Black, Biscuit and Stainless Colors CONTROL SYSTEM Timer Electronic Limits 99 Min. 99 Sec. Operation TOUCH CONTROL, 30 Pads Display Blue Green with scrolling text Convection Cooking Cycles Keypad Disable / Child Lockout Mode Yes - Press "Cancel"...
  • Page 12 MODEL MH1160XSB/Q Feature Level/Series Basic Non Sensor Colors Black, White CONTROL SYSTEM Timer Electronic Limits 99 Min. 99 Sec. Operation TOUCH CONTROL, 25 Pads Display Blue Green with scrolling text--Dual Language English and French Convection Cooking Cycles Keypad Disable / Child Lockout Mode Yes - Press "Cancel"...
  • Page 13 MH1170XS TMH16XS Basic Non Sensor Basic Non Sensor Black, White, Biscuit and Stainless (B)Black, (Q)White, (D)Silver Electronic Electronic 99 Min. 99 Sec. 99 Min. 99 Sec. TOUCH CONTROL, TOUCH CONTROL, Blue Green scrolling text--Dual Language English and French Blue Green with scrolling text--Dual Language English and French Yes - Press "Cancel"...

  • Page 14: Whirlpool Microwave Oven Warranty

    If you need service, first see the “Troubleshooting” section of the Use & Care Guide. After checking “Troubleshooting,” additional help can be found by checking the “Assistance or Service” section or by calling Whirlpool. In the U.S.A., call 1-800-253-1301. In Canada, call 1-800-807-6777.

  • Page 15: Installation Information

    INSTALLATION INFORmATION HOOD FAN mOTOR mOUNTING POSITIONS Airflow towards front of unit. RECIRCULATING AIR Note: ths s the way the unt s shpped. Airflow towards rear of unit. Unplug REAR VENTED AIR wre, turn fan motor over, and plug wre back nto the quck dsconnect socket over the top of the fan motor.
  • Page 16 ---- NOTES ----...

  • Page 17: Theory Of Operation

    THEORY OF OPERATION AIRFLOW PATHS The microwave uses the exhaust blower motor to remove vapors from the cooking area below the unit, it also circulates air within the unit to assist cooking performance and cool the operating compo- nents. Cooktop Ventng Component coolng...
  • Page 18 Air is circulated in the unit to assist cooking The motor operates at two speeds--low speed all performance. of the time and high speed during sensor-cooking modes.

  • Page 19: Component Access

    COmPONENT ACCESS This section instructs you on how to service each component inside the Model MH2175XS Microwave Oven Hood Combination. The components and their locations are shown below. COmPONENT LOCATIONS PartsLayout (nottoscale) A. Hood fan motor assembly H. Cavity thermostat 2—opens at 257ºF P.

  • Page 20: Removing The Turntable Motor & Hood (Cooktop) Lamp Assembly

    REmOVING THE TURNTABLE mOTOR & HOOD (COOkTOP) LAmP ASSEmBLY 4. Remove the wire from the wire clip towards the middle of the bottom cover. ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal 5. To remove the turntable motor: parts.
  • Page 21 c) Remove the two screws from the turntable f) Remove one screw to remove the lamp motor and remove the motor. socket. NOTE: When reassembling the wire connec- tor onto the turntable motor, make sure the holes of the connector are facing away from the bottom of the unit, outward toward you.

  • Page 22: Removing The Control Panel & Control Board

    REmOVING THE CONTROL PANEL & CONTROL BOARD 5. Push the panel up to release the tabs from the slots. Pull the panel away from the microwave unit to gain access to the back side of it. ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts.
  • Page 23 7. To remove the mcrocomputer board: c) Press in on the locking tab end of the arm a) Remove 2 screws at the top and release and lift the arm to release the touch panel rib- 2 tabs at the bottom to be able to lift the top bon cable.

  • Page 24: Removing The Motor Capacitor And Line Fuse

    REmOVING THE mOTOR CAPACITOR AND LINE FUSE REmOVING THE DOOR SWITCHES To remove the door swtches: 1. Unplug microwave oven or disconnect power. 2. Remove the control panel (see page 4-4). 3. Open the microwave oven door. 4. The Primary interlock switch and Monitor inter- lock switch are attached to a mounting bracket at the top.
  • Page 25 10. The Primary interlock switch and Monitor 6. To remove a switch assembly, remove the interlock switch are located on opposite sides mounting screw from the front panel of the of their mounting bracket. The Primary inter- microwave for the desired assembly. lock switch can be removed from the mounting bracket in the same manner as shown above 7.

  • Page 26: Removing The Oven Cavity Lamp And Charcoal Filter

    REmOVING THE OVEN CAVITY LAmP AND CHARCOAL FILTER To remove the charcoal filter: 1. Unplug microwave oven or disconnect power. 2. Remove the air grille (see page 4-4). 3. Lift the charcoal filter from the mounting frame and pull it out of the microwave unit. 4.

  • Page 27: Removing The Oven Rack Retainers

    REmOVING THE OVEN RACk RETAINERS ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful. 1. Unplug microwave oven or disconnect power. 2.

  • Page 28: Removing The Outer Cabinet

    REmOVING THE OUTER CABINET 7. After removing all the screws, pull each side out and push it back from the front corners of the unit to release the tabs on the inside front edge of the cabinet. ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts.

  • Page 29: Removing The Thermostats And Thermistor

    REmOVING THE THERmOSTATS AND THERmISTOR To remove the magnetron thermostat: 1. Remove 2 screws and disconnect the wire connectors. Wre Connectors Screws ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts. Sharp edges may be present, and you To remove the Cavty thermostats: can cut yourself if you are not careful.

  • Page 30: Removing The Magnetron

    REmOVING THE mAGNETRON ® 6. Remove the four T-20 Torx screws that se- cure the magnetron to the unit and remove the magnetron. ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

  • Page 31: Removing The High-Voltage Transformer

    REmOVING THE HIGH-VOLTAGE TRANSFORmER 5. Remove the 2 wire connectors on the front, 1 wire connector from the magnetron and 2 wire connectors from the capacitor. 2 Wre 1 Wre Connectors Connector ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts.

  • Page 32: Removing The High-Voltage Diode And Capacitor

    REmOVING THE HIGH-VOLTAGE DIODE AND CAPACITOR To remove the Hgh-Voltage Capactor: 1. Unplug microwave oven or disconnect power. 2. Remove the outer cabinet (see page 4-10). 3. CAUTION: Discharge the high-voltage ca- pacitor with a 20,000 Ohm resistor to chassis ground.

  • Page 33: Removing The Oven Cavity Lamp Socket

    REmOVING THE OVEN CAVITY LAmP SOCkET 7. Twist the lamp socket to release it from the one tab on the left side. 8. Remove the two wire connectors and remove the lamp socket from the unit. ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts.

  • Page 34: Removing The Ac Line Filter

    REmOVING THE AC LINE FILTER 6. When reinstalling the wire connectors to the AC line filter, install the following wires to the following connection spades: 1. Black AC line in 2. White AC line in 3. Black 4. Blue ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal Green Ground parts.

  • Page 35: Removing The Hood Fan Motor And Humidity Sensor

    REmOVING THE HOOD FAN mOTOR AND HUmIDITY SENSOR To remove the humdty sensor: 1. Unplug microwave oven or disconnect power. 2. Remove the outer cabinet (see page 4-10). 3. CAUTION: Discharge the high-voltage ca- pacitor with a 20,000 Ohm resistor to chassis ground.

  • Page 36: Removing The Fuse Holder & Mounting Bracket

    REmOVING THE FUSE HOLDER & mOUNTING BRACkET 4. Remove the control panel (see page 4-4, steps 2 - 5). 5. Remove the wires from the retainer on the top of the fuse holder mounting bracket. 6. Remove the 2 wire connectors from the fuse holder.

  • Page 37: Removing The Door And Door Disassembly

    REmOVING THE DOOR AND DOOR DISASSEmBLY Components of the mHC door (n order of removal.): 1. Choke Seal 2. Inner Door 3. Handle 4. Door Bracket 5. Outer Glass 6. Door Frame ImPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts.
  • Page 38 Inner door removal: This shows the screw loca- Door bracket removal: tions for each labeled component at the top of the door bracket. The same screws are at the 1. Remove two screws that secure the door bottom of the bracket, in reverse order. bracket to the door frame.

  • Page 39: Component Testing

    COmPONENT TESTING H.V. TRANSFORmER Important Before testing any of the components, perform the following checks: • Unplug microwave oven or disconnect power. • Remove the lead wires from the related com- ponent before conducting any of the following tests. • Discharge the high-voltage capacitor and 1.

  • Page 40: Magnetron

    mAGNETRON H.V. CAPACITOR 1. Unplug microwave oven or disconnect power. 1. Unplug microwave oven or disconnect power. 2. Remove wire leads. Check that the seal is in 2. Remove wire leads. good condition. 3. Measure resistance (ohmmeter scale: Rx10k): 3. Measure resistance (ohmmeter scale: Rx1): •...

  • Page 41: H.v. Diode

    H.V. DIODE TURNTABLE mOTOR NOTE: Some inexpensive meters may indicate 1. Unplug microwave oven or disconnect power. infinite resistance in both directions. 2. Remove wire leads. 1. Unplug microwave oven or disconnect power. 3. Measure resistance (ohmmeter scale: Rx1k): 2. Measure resistance (ohmmeter scale: Rx1k): •...

  • Page 42: Humidity Sensor

    HUmIDITY SENSOR HOOD ExHAUST FAN mOTOR 1. Unplug microwave oven or disconnect power. 1. Unplug microwave oven or disconnect power. 2. Remove the 3-pin connector from the elec- 2. Remove wire leads. tronic control (P1). NOTE: Do not remove the attached resistor, which is used for internal 3.

  • Page 43: Ac Line Filter

    AC LINE FILTER THERmOSTATS 1. Unplug microwave oven or disconnect power. 1. Unplug microwave oven or disconnect power. 2. Remove wire leads. 2. Remove wire leads. 3. Measure resistance (ohmmeter scale: Rx1): 3. Measure continuity (ohmmeter scale: Rx1) • Normal: 1-3 (coil): Less than 1 ohm; 2-4 (coil): •...
  • Page 44 ---- NOTES ----...

  • Page 45: Diagnosis & Troubleshooting

    DIAGNOSIS & TROUBLESHOOTING INTERLOCk SWITCH CHECkOUT PROCEDURES 1. Unplug microwave oven or disconnect power. 2. Disconnect the wires at the Primary Interlock Switch. 3. Check from the common terminal (black/brown wires) to the normally open terminal (black/white wires). Primary Interlock 1.

  • Page 46: Touch Panel And Electronic Control Test

    TOUCH PANEL AND ELECTRONIC CONTROL TEST Touch Panel and Electronic Control Test The microwave hood combination is provided with a self-diagnostic routine that can be accessed through the touch keypad. To initiate this routine: 2. Release the OFF/CANCEL button and close the door. All VFD segments will be lit to indicate the test mode has 1.

  • Page 47: Microwave Oven Power Output Test

    mICROWAVE OVEN POWER OUTPUT TEST 1. Place 8 oz (250 mL) of lukewarm water in the center of the NOTE: If the water takes longer than 2 minutes to heat, microwave oven. this may indicate either the operating voltage is lower than 110 volts or there is a problem with the microwave 2.
  • Page 48 ---- NOTES ----...

  • Page 49: Wiring Diagram & Strip Circuits

    WIRING DIAGRAm & STRIP CIRCUITS WIRING DIAGRAm - 8205889 - SENSOR mODEL Cavity Cavity Thermostat 2 Thermostat 1 AC 120V/125V 60Hz...

  • Page 50: Wiring Diagram - 8205660 - Non Sensor Model

    WIRING DIAGRAm - 8205660 - NON SENSOR mODEL Cavity Cavity Thermostat 2 Thermostat 1 AC 120V/125V 60Hz...

  • Page 51: Strip Circuits

    STRIP CIRCUITS mICROWAVE COOkING Electronic Control L.V. Transformer Magnetron Thermostat Cavity Fuse Secondary H.V. MW Relay Thermostat 20AMP Interlock Filter Transformer 4903 Switch Cavity Primary Thermostat Turntable Interlock TTM Relay Motor Switch 4906 Cavity CL Relay Lamp 4901 HF Triac 7104 HF Relay 4902...

  • Page 52: Hood Exhaust Fan On High / Medium

    HOOD ExHAUST FAN ON HIGH / mEDIUm Electronic Control Cavity Cavity L.V. Thermostat 1 Thermostat 2 Transformer Filter Fuse 20 Amp HF Triac 7104 HF Relay 4902 Motor Capacitor mICROWAVE OVEN PLUGGED IN—TImE OF DAY DISPLAYED Electronic Control Fuse L.V. Filter Filter 20 Amp...
  • Page 53 PRODUCT SPECIFICATIONS WARRANTY INFORmATION SOURCES IN THE UNITED STATES: FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORmATION CALL: FOR WHIRLPOOL PRODUCTS: 1-800-253-1301 FOR kITCHENAID PRODUCTS: 1-800-422-1230 FOR ROPER PRODUCTS: 1-800-447-6737 FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOmER’S HOmE CALL: THE TECHNICAL ASSISTANCE LINE: 1-800-253-2870...

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