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.

This is a door latch assembly that also serves as the switch holder in a microwave. It engages the door switches when the door is closed, ensuring the microwave operates safely and only when properly sealed. Replace this part if the microwave door won't latch securely, the unit fails to start, or the door switches are not activating correctly.

This door switch is a safety interlock that detects whether the microwave door is properly closed before allowing the unit to operate. It is mounted near the door latch mechanism inside the microwave's cabinet. Replace this switch if the microwave does not start when the door is closed, runs with the door open, or if it blows a fuse when the door is opened or closed.

Microwave won't start or trips the breaker? This circuit protection fuse opens during overloads or shorts to protect components. Easy fix after resolving cause.

Grease filter traps cooking splatters and oil from high-fat foods, keeping your microwave interior clean. Replace when discolored or clogged. Confirm fit with your model number.

Fix a microwave door that won't stay closed or latch properly with this door hook. Replaces worn latches from repeated use. Simple repair part.

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

Supports the glass tray for smooth rotation and even heating. Replace if worn, warped, or causing scraping and wobble. Confirm fit with your model number.

This is a charcoal filter used in over-the-range microwaves to remove odors and smoke when the microwave is set to recirculate air rather than vent outside. The filter traps grease and odor particles from cooking fumes. Replace it if you notice persistent cooking odors, reduced air filtration performance, or if the filter appears visibly saturated or discolored.

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

Holds the bulb and provides electrical connection for interior lighting. Replace if cracked, heat-damaged, or loose causing lights to fail. Confirm fit.

Structural support frame that holds and aligns components inside your microwave. Replace if cracked, warped, or damaged to restore proper fitment.

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

If your microwave won't heat or runs but food stays cold, a failed rectifier diode may be blocking power to the magnetron. This replacement restores heating.