Parts for Whirlpool WMH75021HV2: Interior And Ventilation Parts

The 40W Light Bulb is an OEM replacement part for Whirlpool microwave ovens. It is a standard-size bulb designed to provide illumination inside the microwave cavity, allowing you to easily view and monitor the cooking or reheating process.

Symptoms of a faulty microwave light bulb include:

• Dimming or flickering light during operation
• Complete bulb failure or no illumination within the cavity
• Discoloration or physical damage to the bulb itself

Causes of a bad microwave light bulb can include normal wear and tear over time, electrical surges or voltage fluctuations, or physical impact or vibration during use.

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore microwave oven models.

The Filter is an OEM part for Whirlpool microwaves. This part filters grease and other particles from the air as it is vented out of the microwave, particularly when the microwave is used in conjunction with a range. This helps to maintain a clean kitchen environment and prevents grease buildup on the microwave’s internal components.

Causes of a bad filter can include accumulation of grease and food particles over time, exposure to high heat, or general wear and tear.  

Symptoms of a bad filter include:

• Reduced ventilation efficiency
• Excessive smoke or steam lingering in the kitchen
• Grease buildup on kitchen surfaces near the microwave
• Unusual odors during microwave operation

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

This replacement lower cabinet base restores the appliance's bottom support and underside protection to help maintain stability and keep internal components shielded from debris. Fits the factory location under the appliance cabinet. What it does

• Provides structural support for the appliance's lower section to reduce wobble and sag.
• Protects motors, wiring and other components from dirt, moisture and impact at the underside.
• Helps stop or reduce unusual rattling or scraping caused by a damaged or missing base.
• Restores proper clearance and mounting for kickplates and toe panels.

• Disconnect power and, if applicable, gas and water before starting any work.
• Use two people to support the appliance when accessing or replacing the base.
• Keep all factory fasteners; re-use or replace with equivalent OEM screws as required.

The Reflector is an OEM part for Whirlpool microwaves. It is located inside the microwave cavity behind the waveguide and works to redirect electromagnetic waves for more even cooking.  

Symptoms of a damaged reflector include:

• Inconsistent or incomplete heating of foods during cooking
• Hot and cold spots forming within the microwave cavity
• Lower overall power output from the microwave

Causes of reflector damage can be cracking or pitting of the reflective aluminum surface over multiple heating cycles. Impact incidents from user error may also damage its shape.

This OEM Whirlpool replacement assists in delivering uniform energy distribution for optimal microwave performance. This part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, and Roper microwave models.

The Interlock is an OEM part for Whirlpool microwaves. It is an important safety mechanism that monitors the door latch and prevents microwave operation when the door is open. 

Symptoms of a faulty interlock include:

• The microwave fails to start or run when the door is open  
• Buzzer sounding indicating a blocked safety device
• Door unable to latch or stay closed securely

Causes can be due to worn contacts within the interlock from repetitive door opening cycles. Over time, this safety component becomes fatigued.

Replacing with this new OEM interlock protects against unintentional microwave exposure by ensuring the door remains closed during operation. Peace of mind is restored with a working safety mechanism.

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.

The Light Socket is an OEM replacement part for Whirlpool microwaves. This socket holds and supplies power to the light bulb inside the microwave, illuminating the interior when the door is opened or when the microwave is in use. It ensures that users can easily monitor the cooking process and check the condition of the food.

Over time, the light socket can become worn out or damaged due to regular use, electrical surges, or the heat generated within the microwave. Corrosion or buildup on the contacts can also impair the socket’s ability to provide a stable connection to the light bulb, leading to intermittent or complete failure of the light.

Symptoms of a bad light socket include:

• The interior light not turning on when the door is opened or during operation
• Flickering or dimming of the light
• The light bulb frequently burning out
• Electrical arcing or sparking from the socket area

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

This thermistor is a fridge temperature sensor that monitors internal air temperature so the control board can regulate cooling. Replacing a faulty thermistor restores accurate temperature readings and more consistent refrigerator performance. What it does:

• Detects interior temperature and sends readings to the control board
• Helps the compressor and fans cycle correctly to maintain set temperatures
• Common symptom: erratic or incorrect temperature inside the refrigerator
• Common symptom: refrigerator runs constantly or cooling is inconsistent
• Common symptom: temperature-related error codes or temperature alarm messages

• Disconnect power to the appliance before starting any repair
• Handle the sensor and wiring harness carefully to avoid damage
• Route and secure the wiring as original; ensure connectors are fully seated

This replacement shield is a small protective cover that helps guard internal components from debris and direct contact, keeping your appliance operating safely and reliably. It restores the intended protection and fit when the original shield is damaged or missing. What it does:

• Covers and protects nearby wiring, sensors, or components from accidental contact and debris
• Helps maintain proper airflow/pathways where applicable to prevent interference
• Reduces risk of rubbing or chafing on wiring and parts that can cause failures
• Can stop rattling or vibration caused by a loose or broken cover

• One replacement shield as shown

• Disconnect power (and water if appliance requires) before beginning any repair
• Inspect surrounding clips and fasteners; replace any that are damaged to ensure a secure fit
• Use basic hand tools; avoid forcing the shield into place to prevent breakage

This fan wheel spins inside the appliance to move air through the system, restoring proper airflow for heating and cooling. It replaces a cracked, worn, or unbalanced wheel to reduce noise and improve performance. What it does:

• Circulates air through the appliance to support heating, cooling, or ventilation
• Helps maintain consistent temperatures and prevents motor overload from restricted airflow
• Reduces rattling or grinding noise caused by a warped or broken wheel
• Restores proper airflow when the original wheel is damaged or missing

• One fan wheel

• Disconnect power to the appliance before starting any repair
• Access may require removing an access panel or cabinet components; follow the manufacturer's service instructions
• Inspect the blower housing and mounting for damage; replace any damaged clips or fasteners
• Ensure the wheel spins freely and is seated correctly on the motor shaft before reassembly

This evaporator fan motor circulates cold air through the freezer and refrigerator compartments to maintain even temperatures and consistent cooling. Replaces a failed or noisy motor to help restore airflow and temperature stability. What it does:

• Spins the evaporator fan blade to move cold air across the evaporator and into the cabinet.
• Helps prevent warm spots and uneven cooling when operating correctly.
• Commonly replaced for noisy operation, failure to run, or intermittent airflow.
• Compatible with refrigerators that use this OEM-style fan motor design.

• Disconnect power to the appliance before starting any repair.
• Access typically requires removing interior panels or the evaporator cover; keep screws and fasteners organized.
• Inspect the fan blade and housing for ice buildup or obstructions before installing the new motor.

This fixed thermostat senses temperature and opens or closes the electrical circuit to control heating. It replaces a failed temperature-sensing switch to restore proper heating control and safety. What it does:

• Monitors appliance temperature and interrupts power when the set limit is reached
• Prevents overheating by opening the circuit at high temperatures
• Restores normal heating control when a failed thermostat causes no heat or continuous heating
• Works as a safety/limit device in the appliance's heating system

• Disconnect power to the appliance before starting any repair
• Handle the thermostat and sensing element gently; avoid bending or stressing terminals
• Refer to the appliance service manual or OEM instructions for proper placement and mounting

The High Voltage Capacitor is an OEM part for Whirlpool microwaves. This component allows the microwave to store and discharge high voltage current to the magnetron tube for generating microwave energy. 

Symptoms of a faulty capacitor include:

• Slow or incomplete cooking even on high power levels
• Inconsistent or uneven heating inside the microwave cavity  
• Sparking, burning or smoke emitting from inside components
• An appliance that fails to start or runs intermittently

Causes can be regular wear and tear over many years of use. The capacitor endures heat stresses each time the magnetron operates.

 This part is also compatible with select Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore brand microwaves.

The Diode is an OEM part for Whirlpool microwaves. The diode plays a key role in regulating power flow and protecting other sensitive components from voltage fluctuations.

Causes of a bad microwave diode can include component failure due to age or heat exposure over time. Diodes are also susceptible to electrical damage if exposed to power surges.

Symptoms of a bad diode can include:

• The microwave failing to power on or having intermittent power
• Food not heating up properly or unevenly
• Strange sounds like buzzing or humming emanating from inside
• The door lock mechanism not engaging or release properly
• Repeated tripping of fuses or circuit breakers

This genuine OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

This electronic control board is the main console module that manages your appliance's cycles, settings and display so controls respond correctly and programs run as selected. Replacing a faulty board restores normal control operation. What it does:

• Controls cycle selection, timing, and start/stop functions for the appliance
• Manages the user interface and display so buttons and indicators respond
• Communicates with other modules to run selected programs and safety checks
• Common symptom link: appliance won't start, display is blank or shows errors
• Common symptom link: buttons or touch controls don't respond or cycles won't advance

• One electronic control board (console module)

• Disconnect power before starting any service work to avoid shock
• Handle the board by edges and avoid touching components or contacts
• Verify all wiring harnesses and connectors seat fully before reassembly