Kenmore 79049603312 wall oven/microwave combo Parts

On the Kenmore 79049603312 wall oven/microwave combo, the microwave is built into the combination appliance, so you typically do not replace the microwave as a separate, standalone unit. In most cases, you either repair the microwave section or replace the entire combo assembly; confirm service and removal details in the 79049603312 installation guide.

What you can do instead (most common options)

• Repair the microwave section by diagnosing the failed component (door switch, thermal fuse, control, etc.).
• Replace a failed safety or control part if testing confirms it is defective.
• Replace the full wall oven/microwave combo if multiple major microwave components have failed or the cabinet is damaged.
• Have a qualified technician service it if the repair involves high-voltage microwave components.

Parts that commonly fix “microwave not working” symptoms

If the microwave portion is dead, won’t start, or stops when the door moves, these model-matched parts are common suspects:

• Microwave door interlock switch 5304493153 (door-closed safety circuit)
• Wall oven microwave thermal fuse, 20-amp 5304440780 (opens if overheating occurs)
• Wall oven microwave electronic control board 5304475168 (controls microwave functions)

Quick symptom-to-part guide

Symptom	Common cause	Example part for 79049603312
No power / completely dead	Open thermal fuse or power issue	Thermal fuse
Runs only with door pressure	Worn/misaligned interlock switch	Door interlock switch
Display works, won’t heat	High-voltage component issue	Transformer or magnetron

Why it matters

A built-in combo shares structure, wiring, and ventilation; removal and service steps are specific to the cabinet and electrical setup. The installation instructions also stress proper grounding and shutting off power during line connections, which is critical for safe service.

Last updated: February 2026

To estimate the age of your Kenmore 79049603312 wall oven/microwave combo, we use the serial number (not the model number) from the serial plate and then decode it by the unit’s manufacturer. Your 79049603312 owner's manual shows where to find the serial plate.

Where to find the serial number

Check the serial plate on the appliance (the manual calls this the “serial plate location”). Common places on wall oven and microwave combo units include:

• Along the oven frame behind the door (open the lower oven door and look around the front frame)
• On the microwave frame behind the upper door
• On a side trim area visible when the door is open
• On the installation tag area near the cabinet cutout (sometimes visible after removing trim)

How to decode Kenmore age (what to look for)

Kenmore model numbers often start with a 3-digit prefix that points to the manufacturer, but the manufacture date is typically encoded in the serial number.

Use this quick approach:

• Write down the full serial number exactly as shown
• Identify the manufacturer from the model prefix (for 790, the manufacturer is commonly Frigidaire/Electrolux)
• Decode the serial number using that manufacturer’s date format (week and year or month and year)
• If the serial label is worn, take a clear photo and zoom in to confirm characters

Model number vs. serial number (quick comparison)

Label	What it tells you	Used to determine age?
Model number (79049603312)	Design and parts compatibility	No
Serial number	Production sequence and date code	Yes

Why it matters

Knowing the build date helps us match the correct replacement parts (like a control board, door switch, or temperature sensor) and choose the right troubleshooting steps for your Kenmore wall oven/microwave combo.

Last updated: February 2026

Kenmore model numbers are structured so the first 3 digits identify the manufacturer behind the Kenmore brand, and the remaining digits narrow down the product family and specific feature variations. For your Kenmore wall oven/microwave combo, the model is 79049603312; the serial plate location is shown in the 79049603312 owner's manual.

How to break down a Kenmore model number

Most Kenmore model numbers follow this pattern:

• Prefix (first 3 digits): manufacturer code (who built it)
• Middle digits: base design or product family
• Ending digits: version, color, or feature package changes
• Full model number: what we use to match the correct parts list and diagrams

Where to find the model and serial number on 79049603312

On Kenmore model 79049603312, the manual shows the serial plate is located:

• Along the interior side trim
• Visible when the lower oven door is opened
• Printed with both the model and serial number

Quick ID checklist

• Write the model number exactly as shown (all digits)
• Record the serial number too (helps with production changes)
• Use the full model number when ordering parts like a control board, bake element, or temperature sensor

Why the prefix matters (common example)

Kenmore is a brand; different manufacturers built different Kenmore products over the years. The prefix helps us route you to the right parts system.

What you have	What to use for parts lookup	Why it matters
Kenmore wall oven/microwave combo	Full model number (example: 79049603312)	Ensures correct wiring, controls, and fit
Only a partial number	Complete number from the serial plate	Prevents ordering the wrong revision

Why it matters

Even small digit changes can mean different control boards, sensors, door parts, or wiring harnesses. Using the full model number helps us match the correct Kenmore parts breakdown the first time.

Last updated: February 2026

Yes. The Kenmore wall oven/microwave combo model 79049603312 is a single built-in appliance that combines a microwave oven and an electric wall oven in one cabinet, designed to install into a wall cutout as one unit. See the 79049603312 installation guide for approved installation requirements.

What “wall oven microwave combo” means

A wall oven/microwave combo is built as one appliance with two cooking compartments:

• Upper compartment: microwave oven with its own controls and door
• Lower compartment: wall oven with electronic oven controls
• Single cabinet: installs into one framed opening (not two separate appliances)
• Shared electrical and cooling design: internal cooling fan may run after high-heat use

Installation rules to know (important)

For model 79049603312, the installation instructions specify key limitations:

• It must be installed and grounded properly by a qualified installer or service technician.
• It must be connected to an individual, properly grounded branch circuit.
• Circuit breaker or fuse sizing is based on the serial plate wattage.
• It is not approved for stackable installation.
• It is not approved for side-by-side installation.

Setup you might be considering	Approved for 79049603312?	What to do instead
One combo unit in a wall cutout	Yes	Follow the cutout and leveling steps in the guide
Stacking two units	No	Use a single approved combo unit or a different configuration
Side-by-side combo units	No	Use separate appliances designed for side-by-side installs

Why it matters

A combo unit is engineered for specific airflow, mounting, and electrical load. Installing it in an unapproved configuration (stacked or side-by-side) can cause overheating, poor performance, and mounting stability problems.

Last updated: February 2026

Most Kenmore microwaves typically last 9 to 10 years with normal household use; the microwave in your Kenmore 79049603312 wall oven/microwave combo is in that same range. Good ventilation, keeping the door seals clean, and avoiding “running it empty” help you get the full service life.

What affects microwave lifespan most

• Running the microwave with no food inside; this overheats the magnetron area and shortens life
• Door seal and latch condition; a door that does not close properly causes safety and performance issues
• Ventilation and heat buildup; blocked vents make internal components run hotter
• Heavy daily use (multiple long cook cycles per day)
• Power quality; frequent surges can stress the electronic control board

Signs it is nearing end of life (or needs repair)

Symptom	Common cause	What we recommend
Runs but does not heat	High-voltage component issue (magnetron/transformer)	Stop using and have it serviced
Starts then stops, or goes dead	Thermal protection opening, wiring, or control issue	Check airflow and schedule service
Door won’t latch or acts “open”	Interlock/door switch or latch mechanism	Inspect door operation; service if inconsistent
Sparking or burning smell	Waveguide cover damage or food debris	Stop use; clean and replace damaged parts

Quick habits that extend life

• Keep the door seals and sealing surfaces clean and free of cleaner residue
• Do not slam the door; close it firmly so the interlocks engage
• Never operate it empty for more than a minute or two
• Use microwave-safe cookware and cover foods to reduce splatter
• Make sure the unit’s vents are not blocked by foil, towels, or cabinet items

Why it matters

Microwave heating depends on high-voltage components and safety interlocks working correctly. The Use & Care information for this model emphasizes not defeating interlocks and not operating the microwave if the door, hinges, latches, or seals are damaged; those issues can also accelerate wear and lead to unreliable operation.

For model-specific operating and care guidance, follow the 79049603312 use and care manual.

Last updated: February 2026

For Kenmore model 79049603312 wall oven/microwave combo units, the installation guide lists two common cabinet-width versions: 27-inch and 30-inch. Overall product dimensions are approximately 42 3/4 inches tall by 24 5/8 to 28 1/4 inches deep (depth varies by version); confirm your exact version in the 79049603312 installation guide.

Product dimensions shown in the installation guide

The installation guide provides a “Product dimensions” table for 27-inch and 30-inch wall oven versions.

Version (cabinet width)	Approx. height	Approx. depth range	Approx. width
27-inch wall oven	42 3/4 in (108.6 cm)	24 5/8 to 24 3/4 in (62.5 to 62.9 cm)	27 in (68.6 cm)
30-inch wall oven	42 3/4 in (108.6 cm)	up to about 28 1/4 in (71.8 cm)	30 in (76.2 cm)

How to measure your unit (so you order the right parts)

We recommend measuring the appliance itself and the cabinet opening before ordering trim, a door, or installation hardware.

• Measure overall width across the front trim.
• Measure overall height from the bottom edge of the frame to the top edge.
• Measure depth from the front trim to the back (do not include the door handle).
• Measure the cutout width, height, and depth inside the cabinet opening.
• Allow at least 21 inches of clearance in front for the door when it is open.

Why it matters

The 27-inch and 30-inch versions use different cutout dimensions and can have different depth requirements. Matching the correct size helps prevent fit issues and helps ensure you select compatible Kenmore wall oven/microwave combo parts.

For model identification details (serial plate location and model format), use the 79049603312 owner’s manual.

Last updated: February 2026

On Kenmore wall oven/microwave combo model 79049603312, the microwave can stop working because it lost power (tripped breaker, blown fuse), the controls locked up after a power interruption, or a safety device opened due to overheating or a door-switch problem. Start with the checks in the 79049603312 use and care manual.

Quick checks we recommend first

• Confirm the unit has power; check the home breaker and the outlet.
• If the display shows a message after an outage, press Stop/Clear and reset the clock (a power interruption can erase cooking programs).
• Open and close the door firmly; a mislatched door can prevent operation.
• If certain pads (Sensor Cooking, One-Touch, Defrost) do not respond, press Stop/Clear to restore normal pad operation.
• Listen for the cooling blower; it can run after cooking and that is normal.

Common part-related causes (and what they affect)

Symptom	Most likely area	What it means
Completely dead (no display)	Power supply, wiring, thermal protection	Unit is not getting usable power or a safety device opened
Runs but does not heat	High-voltage circuit	Internal high-voltage components are not producing microwave energy
Starts then stops when door moves	Door interlock system	Door switches or latch alignment is failing
Random shutdown after use	Overheating protection	Airflow issue or a thermostat/fuse is opening

If you suspect a door interlock issue, the microwave door interlock switch 5304493153 is a common failure point. If the unit shuts down from heat, the wall oven microwave thermal fuse, 20-amp 5304440780 is one of the safety devices that can open.

Why it matters

A microwave that “stops working” is often doing exactly what it is designed to do: prevent operation when the door is not proven closed, or shut down when temperatures get unsafe. Fixing the root cause (door switch alignment, airflow, or a failed fuse) prevents repeat failures.

Safety note before you troubleshoot

• Turn off power at the breaker before removing any panels.
• Do not service high-voltage microwave components unless you are trained; stored voltage can be dangerous even when unplugged.
• Use the troubleshooting steps in the 79049603312 use and care manual to narrow the symptom before replacing parts.

Last updated: February 2026