Can a microwave oven combo be replaced?
Yes. A Kenmore wall oven/microwave combo like model 79047859405 can be replaced, but it must be swapped as a built-in unit that matches your cabinet cutout, electrical supply, and mounting method. We recommend following the sizing and installation requirements in the installation guide.
What “replaceable” means for this built-in combo
A wall oven/microwave combo is not a countertop microwave; it is secured to cabinetry and hardwired or connected to a junction box. Replacement is typically a full unit change-out, not a simple slide-in.
Key points we follow during planning:
- Match the cabinet cutout dimensions and trim overlap
- Confirm the electrical requirements (voltage, breaker size, wiring type)
- Use the correct mounting points and anti-tip or securing method
- Plan safe handling; these units are heavy and awkward
- Keep any included removal tools; they are intended for servicing and removal
Installation limits to know before you choose a replacement
Your installation instructions for this combo specify it is not approved for stackable or side-by-side installation. That means the replacement should be installed as a single, integrated combination unit in the intended cabinet opening.
Quick compatibility checklist
| What to match | Why it matters | Where to confirm |
|---|---|---|
| Cutout size and trim coverage | Prevents gaps and fit issues | Installation guide |
| Electrical supply and grounding | Prevents nuisance trips and unsafe wiring | Installation guide |
| Venting/clearances | Protects cabinets and electronics from heat | Installation guide |
| Door swing and handle clearance | Avoids interference with nearby drawers/doors | Measure your space |
When replacement is the better option than repair
We typically see replacement make sense when the combo has multiple major failures (for example, control issues plus heating issues) or when a high-cost assembly is needed.
Common repair-related parts for this model include:
- Frigidaire wall oven control board 316418556 (oven control problems)
- Frigidaire range oven temperature sensor 316217002 (temperature accuracy and heating control)
- Microwave door interlock switch 5304493153 (microwave door safety and operation)
Why it matters
Because this is a built-in Kenmore combo, the “right” replacement is the one that fits the cabinet opening and matches the electrical and clearance requirements. Getting those details right prevents installation delays, cabinet damage, and performance problems.
Last updated: February 2026
How do I know if my wall oven is 27 or 30?
For your Kenmore wall oven/microwave combo model 79047859405, the most reliable way to tell whether it is a 27-inch or 30-inch unit is to measure the cabinet cutout opening (inside edge to inside edge). The installation dimensions for both sizes are shown in the installation guide.
How to measure the cutout correctly
Use a tape measure and measure the opening, not the oven door or trim.
- Measure width: left inside cabinet edge to right inside cabinet edge
- Measure height: cabinet bottom support surface to the top inside edge
- Measure depth: front cabinet face to the back wall (allowing for wiring)
- Measure in multiple spots (top, middle, bottom) in case the cabinet is out of square
- Ignore decorative trim; trim can overlap the cabinet face and mislead the measurement
Typical cutout width targets (what you are looking for)
Your installation instructions list separate cutout widths for 27-inch and 30-inch wall ovens. Use your measured cutout width to match the closest size.
| Nominal oven size | What to compare | What it means |
|---|---|---|
| 27-inch | Cutout width | Cabinet opening is built for a 27-inch unit |
| 30-inch | Cutout width | Cabinet opening is built for a 30-inch unit |
Quick checks that prevent ordering the wrong size
These checks help when the cutout width is close to a borderline measurement.
- Confirm the oven sits flush; if the decorative trim does not butt against the cabinet, the unit may not be fully seated
- Check for spacers or filler strips that reduce the opening
- Verify the junction box location and clearance so the oven can slide fully into place
- If you are replacing an older unit, measure the cutout even if the old oven “looked like” a 27 or 30
Why it matters
Wall ovens are standardized around 27-inch and 30-inch cabinet cutouts. Measuring the cutout first helps ensure the replacement fits, the trim covers the opening correctly, and the oven can be installed without cabinet modifications.
Last updated: February 2026
Is there a wall oven microwave combo?
Yes. The Kenmore 79047859405 is a built-in microwave/wall oven combination unit, with a microwave on top and a wall oven below. You can confirm the features, controls, and operating basics in the 79047859405 owner's manual.
What “wall oven microwave combo” means
A wall oven microwave combo is a single appliance designed to install in a cabinet cutout and provide two separate cooking cavities:
- Upper oven: microwave with a door, safety latches, light, and turntable
- Lower oven: electric wall oven with bake and broil functions (features vary by model)
- Shared controls: electronic control pads and clock/timer functions
- Built-in installation: intended to be mounted in cabinetry, not used as a countertop microwave
Quick feature check for model 79047859405
| Component | What you should see | Why it matters |
|---|---|---|
| Microwave section | Turntable, door latches, see-through window | Confirms it is a true built-in microwave, not a trim kit setup |
| Wall oven section | Oven racks, oven vent, large oven door window | Confirms a full wall oven cavity below |
| Controls | Electronic controls with clock/timer | Helps identify the correct control style for troubleshooting |
Why it matters
Combo units like the Kenmore 79047859405 use model-specific parts and installation requirements. Using the correct model number helps ensure you get the right items, such as an frigidaire range oven light bulb 316538904 or an frigidaire range oven temperature sensor 316217002, when you are maintaining or repairing the oven section.
Helpful next steps
- Use the model number 79047859405 when ordering parts or looking up diagrams
- Review the “features at a glance” section in the manual to match what you see on your unit
- If you are planning a cabinet install or removal, follow the 79047859405 installation guide for cutout, mounting, and electrical requirements
Last updated: February 2026
Where can I find my Kenmore microwave model number?
On Kenmore model 79047859405 microwave and wall oven combos, the model number is printed on the serial plate. You can see it along the interior side trim when you open the oven door; record it for parts lookup and service reference in the 79047859405 owner's manual.
Where to look (quick checklist)
- Open the lower wall oven door fully.
- Look along the interior side trim (the vertical trim just inside the door opening).
- Find the serial plate label; it lists Model No. and Serial No.
- Write the numbers down exactly as shown (including any leading digits).
- Use that model number when ordering parts like a bake element, temperature sensor, or control board.
What the label typically shows
| Label item | What it’s used for | Example format |
|---|---|---|
| Model number | Matching the correct parts diagrams and lists | 790.XXXXXXX |
| Serial number | Identifying production run details | Letters and numbers |
| Date of purchase (your record) | Warranty and maintenance history | Your receipt date |
Why it matters
Kenmore microwave and wall oven combo parts can vary by production series. Using the exact model number from the serial plate helps us match the correct components and avoid ordering the wrong electrical or door parts.
If you are checking the microwave section specifically
On combo units, the microwave shares the same overall model identification used for the appliance. Start with the serial plate location above; it is the fastest, most reliable place to confirm the correct model number for both the microwave and the wall oven.
Last updated: February 2026





