Hmv3021/U02 Parts

The Microwave Switch is an OEM part for Bosch microwaves. It functions as a safety device that ensures the microwave operates only when the door is securely closed.

You should replace this microwave switch if it becomes faulty due to wear and tear, or if it's damaged from electrical issues or physical impact. A malfunctioning switch can prevent the microwave from starting, cause it to stop unexpectedly, or lead to safety hazards by allowing the microwave to run with the door open.

Symptoms of a bad microwave switch include:

• Microwave not starting
• Intermittent operation or shutting off unexpectedly
• Microwave running with the door open
• Error codes related to door or safety switches

This OEM Bosch part is also compatible with Thermador, Gaggenau, and some Kenmore models.

The Switch is an OEM part for Bosch microwaves. It plays a role in the safety and functionality of the microwave, acting as a security mechanism that prevents the microwave from operating when the door is open. This ensures that microwave radiation is contained and only in use when the door is securely closed, protecting users from accidental exposure.

Causes of a malfunctioning door switch can range from physical damage, such as cracks or wear from repeated use, to electrical issues like short circuits or disconnections.  

Symptoms of a bad Microwave Door Switch include:

• The microwave fails to start or stops unexpectedly.
• The interior light fails to turn on or off appropriately.
• Unusual sounds when the door is opened or closed.
• The microwave operates only when the door is in a certain position or not at all.

This OEM Bosch part is also compatible with Thermador, Gaggenau, and some Kenmore models.

The Lock is an OEM part for Bosch microwaves. This part ensures the microwave door closes securely. This lock mechanism plays a vital role in microwave safety, preventing the appliance from operating if the door is not properly closed. 

Causes of a bad Microwave Door Lock can range from normal wear and tear, which gradually degrades the lock's integrity, to accidental damage or misalignment from rough handling. 

Symptoms of a malfunctioning Microwave Door Lock include:

• The microwave refusing to start or stopping unexpectedly, indicating the door isn't securely latched.
• A loose feeling or visible damage to the door lock, suggesting it cannot engage properly.
• Warning signals or error messages displayed by the microwave, pointing to a door closure issue.

This genuine OEM Bosch part is also compatible with Thermador, Gaggenau and select Kenmore models.

The Door Switch is an OEM part for Bosch microwaves. This part ensures that the microwave oven does not operate unless the door is securely closed, a critical safety feature to prevent exposure to microwave radiation. The switch interacts with the microwave’s control system, signaling when the door is closed and it's safe to initiate cooking. 

Causes of a bad Door Switch can include mechanical wear and tear from regular use, leading to a failure to engage properly.  

Symptoms of a bad Door Switch in a microwave include:

• The microwave not starting or operating when the door is closed.
• Intermittent operation or sudden stopping of the microwave during use, suggesting the door switch is not consistently engaged.
• The microwave continuing to operate when the door is opened, indicating a serious safety concern.

This genuine OEM Bosch part is also compatible with Thermador, Gaggenau and select Kenmore models.

This replacement fuse safeguards your appliance's electrical circuit. It opens when a short or overload occurs, helping protect the control and wiring; replace only after correcting the root cause of the blown fuse.

• Opens the circuit during overcurrent or short conditions to protect components
• A blown/open fuse can leave the appliance dead or controls unresponsive
• Common signs include no power, shuts off mid-cycle, or fuse tests open for continuity
• Repeated fuse failures usually indicate an underlying shorted component or damaged wiring

• Disconnect power at the breaker and verify no voltage before servicing
• Replace like-for-like per the service information; do not bypass or upsize the fuse rating
• Test the old fuse with a multimeter and address any shorts or damaged wiring before restoring power
• Handle carefully to avoid stressing fuse clips/holder

The Grease Filter is an OEM part for Bosch microwaves. It functions to catch and contain any splatters or grease that may result from cooking foods with high fat or oil content in the microwave. This helps keep the microwave interior clean and protects components from residue buildup.

Causes of a bad grease filter can include damage or wear over frequent use and cleaning cycles. Failing to replace filters at recommended intervals can also cause them to become excessively dirty or clogged.

Symptoms of needing a new grease filter include:

• Grease splatters accumulating inside the microwave rather than being caught by the filter
• Unpleasant burnt or smoky smells generated during cooking
• Reduced cooking power or effectiveness due to blocked ventilation

This genuine OEM Bosch part is also compatible with Thermador, Gaggenau and select Kenmore models.

This replacement lamp restores proper lighting in your appliance, making it easier to see contents and monitor cycles. Install it when the original bulb burns out or flickers to bring clear, reliable illumination back.

• Provides illumination when the appliance's light circuit or door switch activates
• Common symptoms: no light, intermittent or flickering light, or a visibly failed bulb
• Heat, age, vibration, or moisture can cause the lamp to fail
• A new lamp typically resolves lighting issues if the socket and switch are sound

• Disconnect power at the breaker or unplug before servicing
• Allow the area to cool fully before opening the light cover
• Handle the glass with clean gloves or a cloth to avoid skin oils
• Install the exact replacement specified for your model; do not exceed the manufacturer's rating

The Filter is an OEM part for Bosch microwaves. It helps remove smoke, grease, and odors from the air circulated inside the microwave cavity during cooking.

Causes of failure usually include normal grease and dirt buildup over repeated use. Physical damage could also compromise the filter.

Symptoms of a bad microwave filter include:

• Greasy or burnt food smells lingering inside the microwave
• Visible accumulation of grime or residue on the filter screen
• Reduced ventilation and airflow inside the microwave cavity

This genuine OEM Bosch part is also compatible with Thermador, Gaggenau and select Kenmore models.

The Hook is an OEM part for Bosch microwave doors. Manufactured from heat resistant composite materials, it firmly holds the door closed during cooking cycles.  

Causes of a faulty latch/hook include failures of being worn down from repetitive opening/closing motions over time. Exposure to high heat or abrasive cleaners also leads to decreased functionality.

Symptoms of a damaged latch/hook involve:

• Doors not sealing fully or locking properly
• Failure to open after cooking
• Degrading latch fittings allowing moisture or debris entry

This genuine OEM Bosch part is also compatible with Thermador, Gaggenau and select Kenmore models.

This turntable support ring sits beneath the microwave glass tray and lets it rotate smoothly for more even heating. Replace a worn or warped ring to restore consistent tray movement and reduce scraping, binding, or wobble during operation. What it does:

• Supports the glass turntable so the drive system can rotate it smoothly
• Helps maintain steady rotation for more consistent cooking results
• Replace if the tray stalls or binds, wobbles, or makes scraping/grinding noises while turning
• Wear or deformation can cause intermittent or noisy rotation

• 1 turntable support ring

• Disconnect power to the microwave before servicing
• Remove the glass tray; lift out the old ring and clean the track on the cavity floor
• Set the new ring flat in the track and reinstall the tray on the drive coupler
• Test rotation with a microwave-safe cup of water; never open the cabinet—microwaves contain high voltage

Secures the door handle to the door so it feels solid and opens reliably. Replacing a cracked or stripped support restores a firm grip and correct handle alignment on many microwave door assemblies.

What it does

• Anchors the handle studs to the door
• Helps fix a loose, wobbly, or sagging handle
• Can resolve difficulty opening the door when the handle shifts
• Replaces supports with cracked plastic or stripped screw holes

What’s included
One door handle support.

Install notes

• Unplug the appliance before servicing; let it sit a few minutes
• Open the door, remove the handle screws, swap the support, and reassemble—do not overtighten
• If the inner door panel is removed, reassemble carefully so latches and shielding seat correctly
• After install, check handle alignment and door latching

This is the glass turntable that sits inside the microwave cavity. Replacing a cracked, chipped, or missing tray restores a smooth, level surface and proper rotation so food heats more evenly and dishes stay stable while cooking.

• Provides a flat, heat-resistant surface that rotates during cooking for even heating
• Direct replacement when the original tray is broken, chipped, missing, or won't seat correctly
• Helps correct issues like wobbling, poor engagement, or uneven heating due to a damaged tray
• Seats on the turntable support and engages the drive coupler for smooth rotation

• Disconnect power before service and allow the oven cavity to cool
• Remove the old tray; clean the support ring and drive coupler of debris
• Align the center hub on the underside of the new tray with the coupler; ensure it sits flat and spins freely
• Test with a microwave-safe cup of water to confirm smooth rotation

This light socket holds the appliance bulb and provides a secure electrical connection, restoring reliable interior lighting. Replace a cracked, heat-damaged, or loose socket to fix lights that don't come on even with a good bulb.

• Provides the electrical contacts and mechanical support for the light bulb
• Helps resolve no-light or intermittent flicker when the bulb and switch are OK
• Common failure signs: discoloration, melting, burn marks, or loose/broken contacts
• Restores dependable illumination in the designated lighting location

• Disconnect power at the breaker and allow the appliance to cool before servicing
• Wear cut-resistant gloves and eye protection; handle bulbs by the base, not the glass
• Note wire positions and transfer connectors one at a time to the new socket
• Seat the bulb fully and test operation before reinstalling any covers or panels

This replacement frame is a structural support piece used to hold and align its associated assembly within the appliance. Replacing a damaged or warped frame restores proper fitment and helps prevent looseness, rattling, or misalignment.

• Provides mounting and structural support for the related assembly
• Keeps panels, covers, or hardware properly positioned
• Helps reduce vibration, rubbing, and premature wear
• Common clues it's needed: cracked/missing tabs, distortion, loose fit, difficulty opening/closing the related component

• Disconnect power (and water or gas, if applicable) before servicing
• Note orientation and hardware locations; take photos for reference
• Transfer any clips, screws, seals, or brackets from the original part if required
• Do not overtighten fasteners; confirm smooth fit and test operation before reassembly

The Temperature Regulator is an OEM replacement part for Bosch microwaves. It plays a crucial role as an electronic interface governing set temperatures and interior heating levels. Consistent and calibrated regulation is necessary for safe and evenly cooked meals. 

Causes of a bad temperature regulator can include normal wear from continual heating cycles. Water damage from condensation or spills has the potential to impact electrical components.

Symptoms of a bad temperature regulator include:

• Inaccurate or fluctuating interior heat, causing cold or hot spots 
• Temperature settings that do not correspond to actual conditions
• Failure to properly increase or decrease power as programmed
• Sensor malfunctions requiring foods to be under or overcooked 

This OEM Bosch part is also compatible with Thermador, Gaggenau, and some Kenmore models. Replacing it ensures continued precise temperature control and safe, reliable microwave operation.

This temperature regulator is the replacement control component that helps maintain proper temperature regulation in your appliance, restoring consistent heating or cooling performance when the original regulator fails. What it does:

• Senses and regulates temperature input to the appliance control system to maintain set temperatures
• Can cause inaccurate temperatures, inconsistent cycling, or failure to heat/cool when worn or faulty
• Replaces a failed or intermittent regulator to restore normal temperature control behavior
• Works as part of the appliance's thermal control circuit

• Disconnect power to the appliance before attempting any service to avoid shock or damage
• Handle the part by its housing; avoid touching electrical contacts or circuit traces
• Basic tools may be required; follow the appliance service manual for access and mounting steps