What are the disadvantages of a microwave oven combo?
A microwave and wall oven combo like the Kenmore Elite 79048909000 saves cabinet space, but the tradeoffs are higher purchase and repair costs, more complicated installation, and less flexibility than separate appliances. You also have to live with the built-in layout and shared service access described in the 79048909000 installation guide.
- Higher total cost: You are buying two appliances in one built-in package.
- More complex repairs: If the microwave section or oven section has a failure, service can involve removing trim, accessing wiring, and working in a tight cabinet cutout.
- Less flexibility: You cannot upgrade or replace just the microwave or just the oven without matching the built-in opening.
- Ergonomics: Depending on mounting height, the microwave can sit higher than a countertop unit, which makes lifting hot liquids more awkward.
- Capacity tradeoff: The microwave cavity is often smaller than a full-size countertop microwave, and the oven may have less usable space than some standalone wall ovens.
Combo units are designed around specific cutout dimensions and mounting methods. The installation instructions emphasize measuring the cabinet cutout and following electrical and mounting requirements.
| Topic | Combo unit reality | What to plan for |
|---|---|---|
| Cabinet cutout | Must match approved cutout ranges | Measure before ordering or replacing |
| Electrical | Dedicated, properly grounded circuit required | Confirm breaker/fuse sizing per rating plate |
| Mounting | Anti-tip screws and trim installation required | Allow time for secure mounting and leveling |
A combo can cook very well, but it is not always the best at every niche task.
- Microwaves still heat primarily from the top/side energy pattern, so crisping and browning can be limited compared to an oven.
- If you rely on specialty microwave features (sensor cooking, convection microwave modes, etc.), the learning curve can be steeper than a basic countertop unit.
A built-in combo affects your kitchen layout, electrical setup, and future replacement options. Knowing the downsides up front helps you avoid surprises with cabinet fit, service access, and long-term ownership costs.
Last updated: January 2026
What is a combo wall oven?
A combo wall oven is a built-in unit that combines two cooking appliances in one cabinet cutout. For Kenmore Elite model 79048909000, it is a microwave and wall oven combination, with the microwave typically positioned above the oven for a single, integrated installation.
A combination unit is designed to save space and keep a built-in look while giving you two separate cooking cavities.
- A traditional wall oven for baking, roasting, and broiling
- A built-in microwave for reheating and quick cooking
- One framed, built-in appliance opening (cabinet cutout)
- Separate controls and safety systems for each cavity
- A single installation process that must follow the specified cutout and electrical requirements
For 79048909000, the installation instructions emphasize measuring your existing cabinet cutout and comparing it to the cutout chart for the model before installation. We also follow the requirement that installation and service be performed by a qualified installer.
Key points to know:
- Measure the cabinet cutout before ordering or installing.
- The oven support surface must be level side-to-side and front-to-rear.
- The unit must be on an individual, properly grounded branch circuit.
- This combination oven is not approved for stackable or side-by-side installation.
See the installation guide for the cutout sizing approach, grounding notes, and electrical requirements.
| Option | What it combines | Typical reason to choose it |
|---|---|---|
| Wall oven/microwave combo | Microwave + wall oven | Saves cabinet space; built-in look |
| Double wall oven | Two ovens | More baking capacity |
| Wall oven + separate microwave | Separate appliances | More layout flexibility |
Knowing you have a true combo unit helps you plan cabinet cutout dimensions, electrical supply, and replacement parts correctly. It also prevents unsafe setups, such as trying to stack or mount the unit side-by-side when it is not designed for that.
Last updated: January 2026
How to reset a Kenmore Elite microwave?
To reset the microwave portion of your Kenmore Elite 79048909000 wall oven/microwave combo, restore power to the unit to clear many control glitches. If the display or keypad is still acting up after power is restored, the next step is to use the reset steps in the 79048909000 owner's manual.
- Turn the unit off.
- Switch the circuit breaker for the wall oven/microwave combo OFF.
- Wait 2 to 5 minutes.
- Turn the breaker ON.
- Reset the clock and test a simple cook cycle (for example, heat a cup of water for 30 seconds).
These checks help separate a control issue from a door-safety issue.
- Confirm the door closes firmly and latches without resistance.
- Check for a stuck or broken latch component such as the microwave door latch hook 5304470547 or microwave latch body 5304470548.
- If the unit is completely dead (no display), a blown fuse is common; see how to tell if a fuse is blown and consider the microwave fuse 5304480634.
- If the display works but the microwave will not start, a failed door interlock can prevent operation; the microwave door interlock switch 5304493153 is a common suspect.
| Symptom | Reset helps? | More likely cause |
|---|---|---|
| Random beeping, frozen keypad | Often | Control glitch, power interruption |
| Runs but does not heat | No | Magnetron or high-voltage circuit |
| No display at all | Sometimes | Fuse, power supply issue |
| “Door” error or won’t start | Rarely | Door latch or interlock switch |
A reset clears temporary electronic control errors and restores normal operation after a power event. If the microwave safety interlock system is not proving the door is closed, the unit will intentionally refuse to run to prevent unsafe operation.
Last updated: January 2026


