Related Manuals for Whirlpool MH9180XL
Summary of Contents for Whirlpool MH9180XL
- Page 1 CONSUMER SERVICES TECHNICAL KM-28 EDUCATION GROUP PRESENTS MICROWAVE HOOD COMBINATION Models GH9185XL & MH9180XL JOB AID Part No. 8178229...
- Page 2 FORWARD This Whirlpool Job Aid, “Microwave Hood Combination,” (Part No. 8178229), provides the technician with information on the installation, operation, and service of the Microwave Hood Combination. It is to be used as a training Job Aid and Service Manual.
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Page 3: Table Of Contents
Model & Serial Number Designations ................1-8 Model & Serial Number Label And Tech Sheet Locations..........1-9 Specifications ........................1-10 Whirlpool Microwave Oven Warranty ................1-12 INSTALLATION INFORMATION ................... 2-1 Microwave Height & Weight Variations ................2-1 Adjusting The Exhaust Airflow ................... 2-2 Removing &... - Page 4 COMPONENT TESTING ......................5-1 Door Switches ........................5-1 Touch Panel Continuity ...................... 5-2 Stirrer & Turntable Motors ....................5-3 AC Line Filter Capacitor ..................... 5-3 Humidity Sensor ........................ 5-4 Cavity Thermostats 1, 2, & 3 ..................... 5-4 Line Fuse & Exhaust Fan Thermostat ................5-5 Exhaust Motor Start Capacitor ...................
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Page 5: General
GENERAL IMPORTANT SAFETY INFORMATION Your safety and the safety of others is very important. We have provided many important safety messages in this Job Aid and on the appliance. Always read and obey all safety messages. This is the safety alert symbol. This symbol alerts you to hazards that can kill or hurt you and others. - Page 6 For continued protection against radiation emission, replace only with these types of switches: Primary (Interlock) Switch: SZM-V16- FA-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 A-OD. It is neither necessary nor advisable to attempt Electrical Shock Hazard measurement of high voltage.
- Page 7 ELECTROSTATIC DISCHARGE • Before removing the part from its package, touch the antistatic bag to a green ground (ESD) SENSITIVE ELECTRONICS connection point or unpainted metal in the ESD problems are present everywhere. ESD appliance. may damage or weaken the electronic control •...
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Page 8: Warning To Service Technicians
WARNING TO SERVICE TECHNICIANS To avoid possible exposure to microwave ra- Whirlpool microwave ovens have a monitoring diation or energy, visually check the oven for system designed to assure proper operation of damage to the door and door seal before the safety interlock systems. -
Page 9: 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 Do not operate or allow the oven to be the magnetron, wave guide or transmis- operated with the door open. sion line, and cavity for proper alignment, integrity, and connections. -
Page 10: R.f. Leakage Test
R.F. LEAKAGE TEST EQUIPMENT NOTE: Enter leakage readings in space BE- FORE and AFTER on the service document. • Electromagnetic energy leakage monitor (NARDA 8100B, HOLADAY H 1501 ). All microwave ovens exceeding the emission level of 4 mw/cm must be reported to Dept. of •... -
Page 11: Precautions To Be Observed When Troubleshooting
PRECAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING The microwave oven is a high voltage, high WARNING current appliance. It is free from danger during ordinary use, but extreme care should be taken DISCHARGING HIGH during repair. VOLTAGE CAPACITORS For about 30 seconds after the oven is CAUTION turned off, an electric charge remains in the Service technicians should remove their... -
Page 12: Model & Serial Number Designations
MODEL & SERIAL NUMBER DESIGNATIONS MODEL NUMBER 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 13: Model & Serial Number Label And Tech Sheet Locations
MODEL & SERIAL NUMBER LABEL AND TECH SHEET LOCATIONS The Model/Serial Number label and Tech Sheet locations are shown below. Tech Sheet Location (Behind Grille) Model & Serial Number Label Location... -
Page 14: Specifications
SPECIFICATIONS MODEL GH9185XL/B/T MH9180XL/B/T CONTROL SYSTEM Sensor Non-Sensor Timer Type Electronic Electronic Limits 99 Min. 99 Sec. 99 Min. 99 Sec. Scale Linear (Digital) Linear (Digital) Operation TOUCH CONTROL, 31 Pads TOUCH CONTROL, 29 Pads 2 Line Display with Multicolor Progress Bar... - Page 15 MODEL GH9185XL/B/T MH9180XL/B/T OVEN INTERIOR FEATURES Size (inches) 22 7/8" W x 9 1/2" H x 14 1/2" D 22 7/8" W x 9 1/2" H x 14 1/2" D Capacity 1.8 Cubic Feet 1.8 Cubic Feet Cooking Power 1100 Watts (IEC-705 Rating)
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Page 16: Whirlpool Microwave Oven Warranty
G. Replacement parts or repair labor costs for units operated outside the United States. WHIRLPOOL CORPORATION SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSE- QUENTIAL DAMAGES. Some states do not allow the exclusion or limitation of incidental or consequential damages, so this exclusion or limitation may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. -
Page 17: Installation Information
INSTALLATION INFORMATION MICROWAVE HEIGHT & WEIGHT VARIATIONS Due to a height variation between microwave signed microwave units measure 16-1/4″. Be- units, the new Microwave Hood Combination cause of this height difference, the microwave uses a mounting plate that is different from hood mounting plates are not interchangeable. -
Page 18: Adjusting The Exhaust Airflow
ADJUSTING THE EXHAUST AIRFLOW Remove the screw from the damper plate Recirculating Air on top of the microwave cabinet, and Toward Front Of Unit remove the plate from under the cabinet flanges. Flange Damper Plate Blower Air Inlet Screw Rear Venting Blower Air Inlet Slide the air deflector out of the cabinet. -
Page 19: Removing & Reinstalling The Microwave Oven
REMOVING & REINSTALLING THE MICROWAVE OVEN CAUTION: Use two people to support the To remove the microwave oven: microwave oven when you remove it from Unplug the microwave oven or disconnect its mounting location. the power. Remove the two bolts that secure the Open the microwave oven door. - Page 20 Rotate the microwave oven downward, To reinstall the microwave oven: and lift the oven to unhook it from the Carefully lift the microwave oven and hang bottom of the mounting plate. Set the oven it on the mounting plate hooks. on a protected surface.
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Page 21: Theory Of Operation
THEORY OF OPERATION MICROWAVE OPERATION Traditional microwave technology is only able Newest developed technology has the ability to generate microwave energy at full power. In to control the level of microwave energy. When order to reduce the power when cooking, de- cooking, defrosting, or reheating at reduced frosting, or reheating food, the microwave cycles power levels, the food receives constant en-... - Page 22 The power for the new Microwave Hood Com- The 1100 Watt inverter replaces the high volt- bination is produced by 40 Watt and 1100 Watt age transformer, capacitor, and diode to pro- inverters. vide the necessary power to operate the mag- netron.
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Page 23: Component Access
COMPONENT ACCESS This section instructs you on how to service each component inside the Microwave Hood Combination. The components and their locations are shown below. COMPONENT LOCATIONS... -
Page 24: Removing The Cabinet
REMOVING THE CABINET Remove the eight screws from the back of WARNING the unit. Screw (1 of 8) Electrical Shock Hazard Back Of Unit Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or Remove the power cord cover screw and electrical shock. -
Page 25: Removing The Bottom Cover & Hood Lamp Socket
REMOVING THE BOTTOM COVER & HOOD LAMP SOCKET Remove the six screws from the bottom WARNING cover and lower the top edge of the cover. Screw (1 of 6) Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. - Page 26 REMOVING CAVITY THERMOSTAT 1 & THE HUMIDITY SENSOR b) Press down on the locking tab in the WARNING holder and rotate the thermostat coun- terclockwise until it is free of the catches, then lift it from the holder. Cavity Thermostat 1 Press Down On Electrical Shock Hazard Locking Tab...
- Page 27 b) Disconnect the 3-wire (red, white, & e) Remove the two screws and ground black) sensor connector from display wire from the sensor and remove the board connector P5. sensor from the bracket. f) Slide the top cover to the left and un- hook the four front locking tabs in the cover with the slots in the chassis, (see the lower left photo).
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Page 28: Removing The Stirrer Motor
REMOVING THE STIRRER MOTOR Lift the left end of the top cover and prop it WARNING up so you can access the stirrer motor. Stirrer Motor Wires Screw (1 of 2) Electrical Shock Hazard Disconnect power before servicing. Raise & Prop Up Replace all parts and panels before Top Cover operating. - Page 29 10. Carefully pull the mica cover off the stirrer 12. Install the new stirrer motor to the unit with motor opening and remove the stirrer fan. the two screws you removed earlier, and NOTE: The cover is held in place with connect the wires to the terminals.
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Page 30: Removing Cavity Thermostats 2 & 3
REMOVING CAVITY THERMOSTATS 2 & 3 Lift the front of the top cover so you can WARNING access cavity thermostats 2 and 3, and prop it up. Top Cover Cavity Thermostat 2 Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. - Page 31 To remove cavity thermostat 3: a) Remove the wires from the terminals. b) Remove the two mounting screws. Cavity Thermostat 3...
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Page 32: Removing The Hood Exhaust Fan Motor
REMOVING THE HOOD EXHAUST FAN MOTOR Remove the four hood exhaust fan motor WARNING cover screws. Remove the four hood exhaust fan motor mounting screws and cup washers. Hood Exhaust Fan Motor Hood Exhaust Fan Motor Cover Screw (1 of 4) Mounting Screw (1 of 4) Electrical Shock Hazard Disconnect power before servicing. -
Page 33: Removing The Cavity Lamp & Socket
REMOVING THE CAVITY LAMP & SOCKET Unscrew the bulb from the cavity lamp WARNING socket. To remove the cavity lamp socket, twist the socket to the left (counterclockwise) to unlock it, and push it out of the mounting hole. Electrical Shock Hazard Cavity Lamp Socket Disconnect power before servicing. -
Page 34: Removing The Control Panel Assembly, The Power Supply & Display Boards, And The Keyboard
REMOVING THE CONTROL PANEL ASSEMBLY, THE POWER SUPPLY & DISPLAY BOARDS, AND THE KEYBOARD b) Disconnect wire connectors P2, P3, WARNING P5, P12, and P14 from the display and power supply boards. c) Disconnect the wires from the relay terminals. d) Remove the green ground wire from the control panel bracket. - Page 35 To remove the power supply & display To remove the keyboard: boards: a) Unclip the bracket and remove it from a) Disconnect wire connector P7 from the the panel. display board. b) Lift the locking arm by the two end tabs and remove the two ribbon cables from connector P6.
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Page 36: Removing An Inline Fuse
REMOVING AN INLINE FUSE Unsnap the two tabs from the locking arms WARNING on the fuseholder for the inline fuse you are removing. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. -
Page 37: Removing The Ac Line Filter Capacitor
REMOVING THE AC LINE FILTER CAPACITOR Discharge the 1100 W inverter (perform WARNING steps 3 and 4 on page 4-20). Remove the AC line filter capacitor from the cooling fan motor and cut the wires from the capacitor leads. Electrical Shock Hazard Disconnect power before servicing. -
Page 38: Removing The Cooling Fan Motor, The Exhaust Fan Thermostat, And The Line Fuseholder
REMOVING THE COOLING FAN MOTOR, THE EXHAUST FAN THERMOSTAT, AND THE LINE FUSEHOLDER To remove the cooling fan motor: WARNING a) Press out on the top side locking tabs, lift the fan, and pull it forward to remove b) Disconnect the 2-wire fan motor con- nector from connector CN153 on the 40 W inverter board. - Page 39 To remove the exhaust fan thermostat: To remove the line fuseholder: a) Remove the cooling fan motor to make a) Disconnect the wire connectors from accessing the thermostat easier (see the fuseholder terminals. step 4). b) Remove the fuse from the fuseholder. b) Disconnect the wire connectors from the thermostat terminals.
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Page 40: Thermostat, & The 40 W Inverter Board
REMOVING THE EXHAUST MOTOR START CAPACITOR, THE MAGNETRON THERMOSTAT, & THE 40 W INVERTER BOARD To remove the exhaust motor start ca- WARNING pacitor, remove the phillips screw and disconnect the wire connectors from the terminals. Screw Electrical Shock Hazard Disconnect power before servicing. - Page 41 To remove the 40 W inverter board: b) Raise the two top locking arms and remove the inverter board. a) Disconnect the wire connectors from: Locking Arms CN151 CN152 CN153 CN153 CN152 CN151 4-19...
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Page 42: Removing The 1100 W Inverter Board
REMOVING THE 1100 W INVERTER BOARD Remove the 40 W Inverter Board (see WARNING page 4-19 for the procedure). Remove the exhaust fan thermostat (see page 4-17 for the procedure). Disconnect the red and white wires from the exhaust motor start capacitor, the blue and gray wires from the magnetron ther- Electrical Shock Hazard mostat, and the brown, red, and orange... - Page 43 10. Disconnect the two magnetron wires from 13. Remove the 2 red and 2 gray wires from the 1100 W inverter (CN703) and remove the inverter terminals at CN702. them from the cover. 14. Release the locking arm on the 3-wire 11.
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Page 44: Removing The Magnetron
REMOVING THE MAGNETRON Discharge the 1100 Watt inverter as fol- WARNING lows. NOTE: Make sure that the screw- driver touches ground before touching the magnetron terminals. a) Use a plastic handle screwdriver and touch the metal tip to the case of the magnetron. - Page 45 Remove the screw from the front mount- Disconnect the two filament wires from the ing panel. magnetron terminals. Front Mounting Panel Screw Remove the four mounting screws from the magnetron. NOTE: Pull the front mount- ing panel forward so you can access the two front screws.
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Page 46: Removing The Primary & Secondary Interlock Switches And The Monitor Switch
REMOVING THE PRIMARY & SECONDARY INTERLOCK SWITCHES AND THE MONITOR SWITCH To remove the secondary interlock WARNING switch or the monitor switch: a) Unsnap the linking rod and remove it. b) Carefully bend the two locking arms back and pull the switch off the two pins. - Page 47 b) Use a T10 torx screwdriver and remove REASSEMBLY NOTES: the two screws from the interlock switch When reinstalling the switch assembly assembly. after performing step 6, be sure to hook c) Pull the switch assembly away from the the plastic tabs, at the top and bottom of front chassis and position it so that you the switch holder, into the slotted metal can access the primary interlock switch.
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Page 48: Removing The Turntable Motor
REMOVING THE TURNTABLE MOTOR Remove the cabinet (see page 4-2 for the WARNING procedure). Open the microwave oven door and re- move the spindle from the turntable motor shaft. Turntable Spindle Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. -
Page 49: Removing The Oven Door And The Inner Panel
REMOVING THE OVEN DOOR AND THE INNER PANEL Place the oven door front side down on a WARNING padded surface. Remove the choke screws from the door frame. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before Choke Screws operating. - Page 50 DOOR COMPONENTS Starting at the top edge of the door near the center and working clockwise, use a putty knife, and pry the latching tabs of the choke out of the door frame slots. Lift the Choke Cover choke as you release the tabs so they do not snap back into the slots.
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Page 51: Component Testing
COMPONENT TESTING Conduct a microwave energy test after per- Discharge the 1100 W inverter before conduct- forming any tests or repairs to the microwave. ing any of the following tests (perform steps 1 through 4 on page 4-20). Check that all wire leads are in the correct position before operating the microwave oven. -
Page 52: Touch Panel Continuity
WARNING Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. TOUCH PANEL CONTINUITY Set the ohmmeter to the R x 1 scale. Use a pair of alligator clips and clip them to To test the touch panel, perform the following the ribbon contact numbers shown along steps:... -
Page 53: Stirrer & Turntable Motors
WARNING Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. AC LINE FILTER CAPACITOR STIRRER & TURNTABLE MOTORS Test Point Test Point Refer to page 4-15 for the procedure for servic- ing the AC line filter capacitor. -
Page 54: Humidity Sensor
WARNING Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. CAVITY THERMOSTATS 1, 2, & 3 HUMIDITY SENSOR Refer to page 4-4 for the procedure for servic- Refer to pages 4-4 and 4-8 for the procedures ing the humidity sensor. -
Page 55: Line Fuse & Exhaust Fan Thermostat
WARNING Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. LINE FUSE & EXHAUST EXHAUST MOTOR FAN THERMOSTAT START CAPACITOR Line Fuse Exhaust Fan Thermostat Refer to page 4-18 for the procedure for servic- ing the exhaust motor start capacitor. -
Page 56: Cooling Fan Motor
WARNING Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. COOLING FAN MOTOR (12 VDC) HOOD EXHAUST FAN MOTOR (120 VAC) Refer to page 4-16 for the procedure for servic- ing the cooling fan motor. -
Page 57: Magnetron
WARNING Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. MAGNETRON MAGNETRON THERMOSTAT (N.C.) Refer to page 4-18 for the procedure for servic- ing the magnetron thermostat. Unplug the microwave oven or disconnect the power. -
Page 58: Inverters
INVERTERS MEASURING OVEN INPUT CURRENT Remove the screw from the power cord Control Power retaining plate and remove the plate. Supply Board Pull the power cord out of the cabinet and separate the wires. Connect an ammeter clamp around the white power cord wire. - Page 59 NOTE: Refer to the “Warnings” on page 1-7. WARNING Do not attempt to repair, or make any adjust- ments to the inverter board. Check Wiring Unplug the microwave oven or disconnect the power. Discharge the 1100 W inverter (perform Electrical Shock Hazard steps 2 through 4 on page 4-20).
- Page 60 Connect power to the microwave oven. WARNING Open the oven door. Touch the voltmeter test probes to pins 1 and 2 of connector CN152 (refer to the photo on the previous page). The meter should indicate 12 volts DC. Close the oven door. Electrical Shock Hazard Press the LIGHT keypad on the control Power is present during the following...
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Page 61: Diagnosis & Troubleshooting
DIAGNOSIS & TROUBLESHOOTING POWER OUTPUT MEASUREMENT The power output of the magnetron can be 3. Place the beaker of water in the center of the microwave oven cavity. measured using the following test. Before you perform the test: 4. Operate the microwave oven on high power for 1 minute. -
Page 62: Display And Power Board Callouts
DISPLAY AND POWER BOARD CALLOUTS DISPLAY PCB Touch Panel Ribbon (Membrane Cable/3C Switch) 1100W Inverter Inverter Ribbon Cable/4C Black Humidity Sensor White POWER PCB 4903 L.V.T. TR1 - 5101 RELAY Interlock 4906 4901 Secondary Switch 1100W Inverter... -
Page 63: Primary, Secondary, & Monitor Switch Checks
PRIMARY, SECONDARY, & MONITOR SWITCH CHECKS Door Door Switch Test Procedure Open Closed 1. Disconnect the wires at the primary interlock switch. Primary ( – ) ( + ) 2. Check from the common terminal (blue & black wires) to the normally-open Interlock terminal (white wire). -
Page 64: Touch Panel & Microcomputer Board Test
TOUCH PANEL & MICROCOMPUTER BOARD TEST The microwave oven has a self-diagnostic test Display Key Name Function that can be accessed through the touch panel Position* keypad. To perform the test: – POPCORN 1. Be sure power is connected to the micro- BAKED POTATO –... -
Page 65: Wiring Diagrams & Strip Circuits
WIRING DIAGRAMS & STRIP CIRCUITS SCHEMATIC DIAGRAM 41 Y/G18 38 R22 MAGNETRON 40 W18 39 W18 42 Y/G18 30 OR22 53 OR22 34 R22 10 BR22 51 G22 43 Y/G18 21 W22 22 Y22 R 24 B 24 2 BL16 3 BL16 4 BL16... -
Page 66: Wiring Diagram
WIRING DIAGRAM GRAY 1100W GRAY INVERTER BLUE BLUE BLUE BROWN CN703 YELLOW CN701 INTERLOCK ORANGE SECONDARY SWITCH MAGNETRON INTERLOCK SUPPORT CAVITY LAMP & CAVITY LAMP HOLDER STIRRER BLACK MOTOR CN152 BLUE CN151 CN153 TURNTABLE THREE POLES BLUE MOTOR CONNECTOR WHITE YELLOW WHITE WHITE... -
Page 67: Strip Circuits
STRIP CIRCUITS MICROWAVE COOKING BLOWER FAN ON AUTOMATIC BLOWER FAN ON VARIABLE... - Page 68 MICROWAVE TIME-OF-DAY DISPLAYED DOOR OPEN - CAVITY LAMP ON COOKTOP LAMP ON (VARIABLE LIGHT)
- Page 69 — NOTES —...
- Page 70 — NOTES —...
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Page 71: Product Specifications
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... - Page 72 CORPORATION...