Page 2
FOREWORD This Whirlpool Service Manual (Part No. W11387992B), provides the In-Home Service Professional with service information for the “Low Profile Microwave Hood Combination.” The Wiring Diagram used in this Service Manual is typical and should be used for training purposes only. Always use the Wiring Diagram supplied with the product tech sheet when servicing the oven.
GENERAL INFORMATION Section 1: General Information This section provides general safety, parts, and information for the “Low Profile Microwave Hood Combination.” ■ Microwave Hood Combination Safety ■ Product Specifications ■ Model and Serial Label • Location • Model Nomenclature ■ Tech Sheet Location Low Profile Microwave Hood Combination...
GENERAL INFORMATION (Cont.) Microwave Hood Combination Safety Your safety and the safety of others are very important. We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety messages. This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and others.
GENERAL INFORMATION (Cont.) Model and Serial Number Location Model & Serial Number Label Location (behind door) Low Profile Microwave Hood Combination...
GENERAL INFORMATION (Cont.) Model Nomenclature Whirlpool® Model Nomenclature MODEL NUMBER Brand W = Whirlpool Platform F = Freestanding Range G = Double Oven Range E = Slide-In Range L = Double Oven Slide-In Range X = Drop-In Range M = Microwave...
Page 13
GENERAL INFORMATION (Cont.) KitchenAid® Model Nomenclature MODEL NUMBER Brand K = KitchenAid Categories F = Freestanding Range C = Cooktop M = Microwave Oven O = Wall Oven S = Slide-In Range Configuration/Fuel C = Countertop (Microwave) H = Microwave Hood Combo B = Built-In (Microwave) L = Low Profile (Microwave) Product Details...
DIAGNOSTICS (Cont.) For Service Technician Use Only Safety WARNING DANGER Electrical Shock Hazard Electrical Shock Hazard Only authorized technicians should perform Disconnect power before servicing. diagnostic voltage measurements. Replace all parts and panels before operating. After performing voltage measurements, Failure to do so can result in death or disconnect power before servicing.
DIAGNOSTICS (Cont.) For Service Technician Use Only Diagnostics - Touch Panel Touch Panel and ACU Test The microwave hood combination is provided with a self-diagnostic routine that can be accessed through the touch keypad. To initiate this routine: 1. Plug in microwave oven or reconnect power, in idle mode, 3.
DIAGNOSTICS (Cont.) For Service Technician Use Only Error/Failure Codes Indications NOTE: Many of the problems listed in the chart below may be solved by power cycling. Unplug microwave oven or disconnect power. After 1 minute, plug in microwave oven or reconnect power. Display Likely Failure Recommended Repair Procedure...
Page 19
DIAGNOSTICS (Cont.) For Service Technician Use Only Display Likely Failure Recommended Repair Procedure Condition F9E3 (only occurs Cavity light / 1. Enter the Diagnostics mode (press CANCEL - CANCEL - START), and open and close door in Diagnostics) Cooling fan once, and then press “2”...
Page 20
DIAGNOSTICS (Cont.) For Service Technician Use Only NOTES: n Below diagrams are not intended to show a complete circuit; n Interlock and Monitor switches cannot be adjusted and all they represent the position of switches during “DOOR OPEN” these switches should be replaced if any one of them is found or “DOOR CLOSED”(continuity checks only).
Page 21
DIAGNOSTICS (Cont.) For Service Technician Use Only ACU Pin Voltage Matrix Check for proper voltage by completing the following steps: 1. Unplug microwave oven or disconnect power. 3. Plug in microwave oven or reconnect power, and confirm voltage reading. 2. Connect voltage measurement equipment to the terminals listed below.
Page 22
DIAGNOSTICS For Service Technician Use Only ACU Pin Voltage Matrix (For Models WML35011KB, WML35011KS, WML35011KW, YWML35011KS, YWML35011KW) MW Oven Running— MW Oven Plugged In - Sitting Idle - ACV Reading ACV Reading Pin Name Wire Color Power On, Power On, Hood Fan Hood Fan Hood Light Microwave Oven...
COMPONENT TESTING (Cont.) For Service Technician Use Only Safety WARNING DANGER Electrical Shock Hazard Electrical Shock Hazard Only authorized technicians should perform Disconnect power before servicing. diagnostic voltage measurements. Replace all parts and panels before operating. After performing voltage measurements, Failure to do so can result in death or disconnect power before servicing.
COMPONENT TESTING (Cont.) For Service Technician Use Only Wiring Diagram Wiring diagram for models WML55011HW, WML55011HB, WML55011HS, YWML55011HW, YWML55011HB, and YWML55011HS 080R22 DOOR RHS TOUCH INTERLOCK TOUCH BOARD SWITCH FOIL 02BK16 09BK22 PRIMARY MONITOR 01GY28 40GY28 RESET INTERLOCK 41GY28 02GY28...
Page 26
COMPONENT TESTING (Cont.) For Service Technician Use Only Wiring diagram for models WML75011HW, WML75011HB, WML75011HZ, WML75011HV, WML75011HN, YWML75011HW, YWML75011HB, YWML75011HZ, YWML75011HV and YWML75011HN 080R22 DOOR RHS TOUCH INTERLOCK TOUCH BOARD MODULE FOIL SWITCH J2_2 J2_2 40GY28 01GY28 RESET 41GY28 02GY28 42GY28 03GY28 43GY28...
Page 27
COMPONENT TESTING (Cont.) For Service Technician Use Only Wiring diagram for models KMLS311HWH, KMLS311HBL, KMLS311HSS, KMLS311HBS, YKMLS311HWH, YKMLS311HBL, YKMLS311HSS and YKMLS311HBS 080R22 DOOR INTERLOCK KEYPAD RHS TOUCH TOUCH SWITCH BOARD BOARD 40GY28 01GY28 41GY28 02GY28 42GY28 03GY28 02BK16 09BK22 MAIN HMI BOARD 43GY28 04GY28 44GY28...
Page 28
COMPONENT TESTING (Cont.) For Service Technician Use Only Wiring diagram for models WML35011KB, WML35011KS, WML35011KW, YWML35011KS, and YWML35011KW Black Tube Low Profile Microwave Hood Combination...
COMPONENT TESTING (Cont.) For Service Technician Use Only Component Testing IMPOR TANT: Unplug microwave oven or disconnect power. Conduct a microwave energy test after performing any tests or repairs to the microwave oven. Discharge the high-voltage capacitor and remove the lead wires from the primary winding of the high-voltage transformer before Check that all wire leads are in the correct positions before conducting any of the following tests.
Page 30
COMPONENT TESTING (Cont.) For Service Technician Use Only Components Test/Results Hood Exhaust Fan Motor 1. Unplug microwave oven or disconnect power. 2. Remove wire leads. 3. Measure resistance: n High Speed—Normal: Red (RD) and Blue (BU) wires: 70 to 170 ohms (approximate); Blue (BU) and Black (BK) wires: 20 to 100 ohms (approximate) n Middle Speed-Normal: Grey (GY) and Blue (BU) wires: 50 to 130 (approximate) n Low Speed—Normal: White (WH) and Blue (BU) wires: 60 to 160 ohms (approximate);...
Page 31
COMPONENT TESTING (Cont.) For Service Technician Use Only Power Output Measurement The power output of the magnetron can be measured using the following “Voltage Measurement at Power Source” and “Output Test” sections. Before you perform the test: n Make sure that the oven cavity is cool and clean. n Check the line voltage at the wall outlet while microwave oven is operating.
COMPONENT TESTING For Service Technician Use Only Component Location (Not to Scale) Z A A A. Main fuse 20 A O. Touch panel B. Motor capacitor P. Door open switch C. Cement resistor Q. Secondary interlock switch D. H.V. capacitor R.
COMPONENT ACCESS Section 4: Component Access Multimedia This section provides service parts access, removal, and replacement instructions for the “Low Profile Microwave Hood Enhanced Combination.” n Accessing the control panel n Door Removal n Outer Wrapper Removal n Component Locations n Cooktop Fan and Light board and Techsheet location n Hood motor location n Interlock switch replacement...
COMPONENT ACCESS (Cont.) Accessing the Control Panel 2. Lift and pull out to access the control and components WARNING behind it. 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.
COMPONENT ACCESS (Cont.) Door Removal 3. Lift and pull out to remove the door. 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. 1.
COMPONENT ACCESS (Cont.) Outer Wrapper Removal Component Locations WARNING WARNING Electrical Shock Hazard Electrical Shock Hazard Disconnect power before servicing. Disconnect power before servicing. Replace all parts and panels before operating. Replace all parts and panels before operating. Failure to do so can result in death or Failure to do so can result in death or electrical shock.
Page 37
COMPONENT ACCESS (Cont.) A. Cavity Thermostat, Non-resettable. A. Motor Capacitor B. Humidity Sensor A. Magnetron Thermostat D. Hood Motor B. Magnetron E. H.V. Transformer C. H.V. Capacitor F. Cooling Fan Motor A. Cavity Light LED A. Cooktop Light LED Low Profile Microwave Hood Combination...
COMPONENT ACCESS (Cont.) Cooktop Fan and Light Board and Tech Sheet Location 2. Lift and pull out the panel, the board and tech sheet are WARNING located on the back of the panel. Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating.
COMPONENT ACCESS (Cont.) Hood Motor location Interlock Switch Replacement WARNING WARNING Electrical Shock Hazard Electrical Shock Hazard Disconnect power before servicing. Disconnect power before servicing. Replace all parts and panels before operating. Replace all parts and panels before operating. Failure to do so can result in death or Failure to do so can result in death or electrical shock.
Page 40
COMPONENT ACCESS (Cont.) 3. Disconnect wires from the control panel to access the 5. When re-installing, make sure that cam is in this position. interlock. 6. Move the cam back to this position after the Torx screws have been tightened. 4.
Page 42
INFORMATION SOURCES IN THE UNITED STATES: FOR PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION CALL: FOR WHIRLPOOL PRODUCTS: 1-800-253-1301 FOR TECHNICAL ASSISTANCE WHILE AT THE CUSTOMER’S HOME CALL: THE TECHNICAL ASSISTANCE LINE: 1-800-832-7174 HAVE YOUR STORE NUMBER READY TO IDENTIFY YOU AS AN...