Whirlpool MH2175XSB Service Guide

Whirlpool MH2175XSB Manual

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  • Whirlpool MH2175XSB | Service Guide - Page 1
    MICROWAVE OVEN HOOD COMBINATION KM-30 8178573 
  • Whirlpool MH2175XSB | Service Guide - Page 2
    on the operation and service of the Whirlpool Microwave 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," or "Tech Sheet" provided with the microwave oven. The Wiring Diagrams and
  • Whirlpool MH2175XSB | Service Guide - Page 3
    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...1-7 Whirlpool Microwave Oven Warranty 1-10 Installation Information 2-1 Hood Fan Motor Mounting Positions
  • Whirlpool MH2175XSB | Service Guide - Page 4
    - Non Sensor Model 7-2 Strip Circuits...7-3 Microwave Cooking...7-3 Hood Exhaust Fan On High Automatically 7-3 Hood Exhaust Fan On Low Speed 7-3 Hood Exhaust Fan On High / Medium 7-4 Microwave Oven Plugged In-Time of Day Displayed 7-4 Door Open-Oven Cavity Light Is On 7-4 Cooktop Light On High
  • Whirlpool MH2175XSB | Service Guide - Page 5
    against radiation emission, replace only with these types of switches: Primary (Interlock) Switch: SZM-V16FA-63 or VP-533A-OF; Secondary (Interlock) Switch: SZM-V01-FA-32; Interlock (Monitor) Switch: SZM-VI6-FA-62 or VP-532A-OF; Oven Lamp Switch: SZM-V6-FA-31 or VP-331 AOD. ESD problems are present
  • Whirlpool MH2175XSB | Service Guide - Page 6
    installing the magnetron. • Routine service safety procedures should be exercised at all times. • Untrained personnel should not attempt service without a thorough review of test procedures and safety information contained in this Job Aid. Whirlpool microwave ovens replacing the blown oven fuse.
  • Whirlpool MH2175XSB | Service Guide - Page 7
    of hinges and latches 5) Evidence of dropping or abuse C. Before turning on the microwave power for any service test or inspection within the microwave generating components, check the magnetron, wave guide or transmission line, and cavity for proper alignment, integrity, and connections. D. Any
  • Whirlpool MH2175XSB | Service Guide - Page 8
    immediately. Also tell the owner not to use the oven. The interlock monitor switch acts as the final safety switch protecting the customer from microwave radiation. If the interlock monitor switch operated to blow the fuse when the interlocks failed, you must replace all interlock switches with new
  • Whirlpool MH2175XSB | Service Guide - Page 9
    . 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 K = KITS M = GOLD CONVECTION S = STIRRER FAN T = TURNTABLE MODEL VARIATIONS 0 - 9 CUBIC FEET 04 = .4 CU. FT. 09
  • Whirlpool MH2175XSB | Service Guide - Page 10
    Whirlpool Serial Number Designations SERIAL NUMBER TR T 06 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 & Serial Number Location Tech
  • Whirlpool MH2175XSB | Service Guide - Page 11
    Turn Table Cooling Fan Oven Light DOOR F EATURES Handle/Latch Seals MICROWAVE SYSTEM Distribution Magnetron SAF ETYF EATURES Interlock Thermal Protectors VENTILATION SYSTEM Type Duct Outlet Size Recirculation CFM Exhaust CFM Touch Control Exhaust Fan 'Auto ON - High Speed Noise Level Recirculation
  • Whirlpool MH2175XSB | Service Guide - Page 12
    Oven Light DOOR FEATURES Seals MICROWAVE SYSTEM Distribution Magnetron SAFETY FEATURES Interlock Thermal Protectors VENTILATION SYSTEM Type Duct Outlet Size Recirculation CFM Out Exhaust CFM Out Touch Control Exhaust Fan Auto ON - High Speed Noise Level Recirculation (Acc. to IEC 704) Grease Filter
  • Whirlpool MH2175XSB | Service Guide - Page 13
    One Incandescent 40 Watt bulb "Low-Medium-High"-Scrolling Text Magnetron, 1 Oven Cavity, 1 Hood, 1 Wave Guide fan for cooling airflow. Recirculation mode 3 Feet 120V, Single Phase, 60 Hz 1800 Watts, For Use With 15 - 20 Amp Circuit Yes FCC, DHHS, UL, CUL 57 lbs. 8205884 8205870 In Use & Care Guide
  • Whirlpool MH2175XSB | Service Guide - Page 14
    ITEMS WHIRLPOOL WILL NOT PAY FOR 1. Service calls to correct the installation of your major appliance, to instruct you how to use your major appliance, to replace or repair house fuses or to correct house wiring or plumbing. 2. Service calls to repair or replace appliance light bulbs, air filters or
  • Whirlpool MH2175XSB | Service Guide - Page 15
    Installation Information Hood Fan Motor Mounting Positions RECIRCULATING AIR Airflow towards front of unit. Note: this is the way the unit is shipped. REAR VENTED AIR Airflow towards rear of unit. Unplug wire, turn fan motor over, and plug wire back into the quick disconnect socket over the top
  • Whirlpool MH2175XSB | Service Guide - Page 16
    ---- NOTES ---2-2
  • Whirlpool MH2175XSB | Service Guide - Page 17
    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
  • Whirlpool MH2175XSB | Service Guide - Page 18
    Air is circulated in the unit to assist cooking performance. The motor operates at two speeds--low speed all of the time and high speed during sensor-cooking modes. 3-2
  • Whirlpool MH2175XSB | Service Guide - Page 19
    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 X BC D E F U W V U TSR Q M N P O A. Hood fan motor assembly
  • Whirlpool MH2175XSB | Service Guide - Page 20
    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 parts. Sharp edges may be present, and you can cut yourself if you are not careful. 1. Unplug
  • Whirlpool MH2175XSB | Service Guide - Page 21
    c) Remove the two screws from the turntable motor and remove the motor. f) Remove one screw to remove the lamp socket. NOTE: When reassembling the wire connector onto the turntable motor, make sure the holes of the connector are facing away from the bottom of the unit, outward toward you. 6. To
  • Whirlpool MH2175XSB | Service Guide - Page 22
    gain access to the back side of it. 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. Remove the two screws from the top of the
  • Whirlpool MH2175XSB | Service Guide - Page 23
    7. To remove the microcomputer board: a) Remove 2 screws at the top and release 2 tabs at the bottom to be able to lift the top board. Screws c) Press in on the locking tab end of the arm and lift the arm to release the touch panel ribbon cable. d) You can now remove the microcomputer board
  • Whirlpool MH2175XSB | Service Guide - Page 24
    and Line Fuse Removing the Door Switches To remove the door switches: 1. Unplug microwave oven or disconnect power. 2. Remove the control panel (see page 4-4). 3. Open the microwave oven door. IMPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts. Sharp
  • Whirlpool MH2175XSB | Service Guide - Page 25
    6. To remove a switch assembly, remove the mounting screw from the front panel of the microwave for the desired assembly. 7. Use a flat blade screwdriver to push the latch arm back just far enough to release the mounting tab and remove the
  • Whirlpool MH2175XSB | Service Guide - Page 26
    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. 4. Replace the charcoal filter with the correct replacement filter. Charcoal filter 1. Unplug microwave oven or disconnect power. 2. Remove
  • Whirlpool MH2175XSB | Service Guide - Page 27
    : 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. Open the microwave oven door. 3. Locate the four oven rack retainers, two on each
  • Whirlpool MH2175XSB | Service Guide - Page 28
    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. Sharp edges may be present, and you can cut yourself if you are not careful. 1. Unplug
  • Whirlpool MH2175XSB | Service Guide - Page 29
    Removing the Thermostats and Thermistor To remove the magnetron thermostat: 1. Remove 2 screws and disconnect the wire connectors. Wire 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 can cut
  • Whirlpool MH2175XSB | Service Guide - Page 30
    screws that secure 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. 1. Unplug microwave oven or disconnect power. 2. Remove
  • Whirlpool MH2175XSB | Service Guide - Page 31
    2 wire connectors on the front, 1 wire connector from the magnetron and 2 wire connectors from the capacitor. 2 Wire Connectors 1 Wire Connector 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
  • Whirlpool MH2175XSB | Service Guide - Page 32
    (see page 4-10). 3. CAUTION: Discharge the high-voltage capacitor with a 20,000 Ohm resistor to chassis ground. 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
  • Whirlpool MH2175XSB | Service Guide - Page 33
    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. Sharp edges may be present, and you can cut yourself if you are not careful. Tab 1. Unplug
  • Whirlpool MH2175XSB | Service Guide - Page 34
    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 IMPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts. Sharp edges may be present, and you
  • Whirlpool MH2175XSB | Service Guide - Page 35
    ground. 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. 4. Remove the hood fan motor. (See left column) 5. Remove the 2 screws
  • Whirlpool MH2175XSB | Service Guide - Page 36
    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. 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
  • Whirlpool MH2175XSB | Service Guide - Page 37
    the Door and Door Disassembly Components of the MHC door (in order of removal.): 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. Choke Seal 2. Inner Door 3. Handle
  • Whirlpool MH2175XSB | Service Guide - Page 38
    slide the glass to the left and up from under the tabs on the right and bottom edges. Press tabs froSmliduenoduert 2. The handle can be replaced without regard for orientation of top and bottom. 4-20
  • Whirlpool MH2175XSB | Service Guide - Page 39
    • Check that all wire leads are in the correct positions before operating the microwave oven. • Grasp wire connectors when removing the wire leads from microwave oven parts. 1. Unplug microwave oven or disconnect power. 2. Remove wire leads. 3. Measure resistance (ohmmeter scale: Rx1): • Primary
  • Whirlpool MH2175XSB | Service Guide - Page 40
    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 good condition. 3. then gradually returns to infinite. • Terminal to case: Normal: Infinite Filament Terminals F FA Magnetron 5-2
  • Whirlpool MH2175XSB | Service Guide - Page 41
    Measure resistance (ohmmeter scale: Rx1k): • Forward: Normal: Continuity; Abnormal: Infinite • Reverse: Normal: Infinite; Abnormal: Continuity 1. Unplug microwave oven or disconnect power. 2. Remove wire leads. 3. Measure resistance (ohmmeter scale: Rx1k): • Turntable Motor-Normal: 2.7k-3.8k ohms
  • Whirlpool MH2175XSB | Service Guide - Page 42
    Humidity Sensor Hood Exhaust Fan Motor 1. Unplug microwave oven or disconnect power. 1. Unplug microwave oven or disconnect power. Blue (BU) and Black (BK) wires: 40-100 ohms (approximate) ; Abnormal: Infinite • Low Speed-Normal: Red (R) and Blue (BU) wires: 100-200 ohms (approximate); Blue (BU)
  • Whirlpool MH2175XSB | Service Guide - Page 43
    AC Line Filter Thermostats 1. Unplug microwave oven or disconnect power. 1. Unplug microwave oven or disconnect power. 2. Remove wire leads. 2. Remove ohmmeter scale: Rx1) • Cavity and Magnetron Thermostats- Normal: Continuity; Abnormal: Infinite • Magnetron thermostat opens at 257ºF (125ºC),
  • Whirlpool MH2175XSB | Service Guide - Page 44
    ---- NOTES ---5-6
  • Whirlpool MH2175XSB | Service Guide - Page 45
    Switch TROUBLESHOOTING Do not continue with the diagnostics of appliance if the household fuse is blown, a circuit breaker is tripped or if there is less than 120-volt power supply at the wall outlet. Complete the following steps before checking microwave oven circuitry: 1. Unplug microwave oven
  • Whirlpool MH2175XSB | Service Guide - Page 46
    Key Tables for Test Mode Key Name Function Start - Light Hi/Lo/Off - Hood Exhaust Fan (HF) Hi/Med/Lo/ - Off Turntable On/Off - Key 32 1 beep Cavity Light On-Relay 4901 Key 33 1 beep Cooktop Light On (High)- Relay 4911 Key 34 1 beep Microwave Oven On for 10 Seconds- Relay 4903
  • Whirlpool MH2175XSB | Service Guide - Page 47
    to the electronic control (at P1). 3. Plug in microwave oven or reconnect power. 4. If problem persists, unplug microwave oven or disconnect power. 5. Replace electronic control. 6. Plug in microwave oven or reconnect power. 1. Unplug microwave oven or disconnect power. 2. Check wiring to Relay 4903
  • Whirlpool MH2175XSB | Service Guide - Page 48
    ---- NOTES ---6-4
  • Whirlpool MH2175XSB | Service Guide - Page 49
    DIAGRAM & STRIP CIRCUITS Wiring Diagram - 8205889 - Sensor Model 31R(HV) Monitor Interlock Switch 33 BK Primary Fuse Interlock 20 Amp Switch 2BK 4OR 5W 6 BK 7 BR 3BR 8BU 1BK Cavity Thermostat 2 AC120V/125V 60Hz 7-1 AC Line Filter L 1 3 BK L Electronic Control CL Relay 4901 HF
  • Whirlpool MH2175XSB | Service Guide - Page 50
    Model 31R(HV) 1BK Cavity Thermostat 2 Monitor Primary Interlock Switch 33BK Fuse 20Amp Interlock Switch 4OR 2BK 6BK 7BR 5W AC120V/125V 60Hz 7-2 L 1 BK AC Line Filter Turntable Motor BK W BU HF Y R Hood Exhaust Fan Motor F FA Magnetron H.V. Transformer DWG NO. MU-079 (Rev. A)
  • Whirlpool MH2175XSB | Service Guide - Page 51
    BU Cavity Thermostat 1 W BU W BU BK 1P6 BK BU BU Y Y RR 5P6 Motor Capacitor HF Filter N W HF NTC Hood Exhaust Fan On Low Speed Cavity L Thermostat 2 BK BK BK BK Filter Fuse 20 Amp BR 5P2 Electronic Control L.V. Transformer 1P3 HF Triac 7104 4P2 HF Relay 4902 7-3 G 4P5
  • Whirlpool MH2175XSB | Service Guide - Page 52
    BU Filter N W Microwave Oven Plugged In-Time of Day Displayed L Filter BK BK Fuse 20 Amp BK BK Cavity Thermostat 2 BR 5P2 Electronic Control L.V. Transformer 1P3 G 4P5 BU Filter N W BU W Cavity Thermostat 1 Door Open-Oven Cavity Light Is On BR 5P2 L Filter BK BK Fuse 20
  • Whirlpool MH2175XSB | Service Guide - Page 53
    IN THE UNITED STATES: FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL: FOR WHIRLPOOL PRODUCTS: 1-800-253-1301 FOR KITCHENAID SERVICER FOR LITERATURE ORDERS: PHONE: 1-800-851-4605 FOR TECHNICAL INFORMATION AND SERVICE POINTERS: www.servicematters.com IN CANADA: FOR PRODUCT SPECIFICATIONS
  • Whirlpool MH2175XSB | Service Guide - Page 54
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MICROWAVE
OVEN HOOD
COMBINATION
KM-30
8178573