KitchenAid KEMS378SSS05 27" electric built-in oven/microwave combo Parts

For KitchenAid model KEMS378SSS05, the model (and serial) information is on the model/serial number rating plate located at the bottom of the right-hand mounting rail. Use that exact model number when ordering parts or checking electrical requirements in the KEMS378SSS05 installation guide.

Where to look on the oven

On this 27-inch KitchenAid built-in wall oven/microwave combo, check these common spots first:

• Open the oven door and look along the right-hand side trim area near the bottom
• Look for a metal rating plate or label on the right-hand mounting rail
• Use a flashlight; the plate can be low and partially recessed
• Write down the full model number and serial number exactly as shown

What you should record (and why)

The rating plate typically includes more than just the model number. Capture all of this:

• Model number (example: KEMS378SSS05)
• Serial number
• Electrical rating (voltage, frequency, and kW)
• Any additional codes that help match factory-specified parts

Why it matters

We use the model number to match the correct KitchenAid parts and to confirm installation requirements like the dedicated circuit size (commonly 30-amp or 40-amp depending on the kW rating shown on the plate).

Quick checklist

Item	What to do	Tip
Find the plate	Check bottom of right-hand mounting rail	Open the door fully
Record details	Model and serial number	Take a clear photo
Use for parts	Match exact parts for your unit	Avoid guessing by appearance

Last updated: January 2026

To reset your KitchenAid KEMS378SSS05 wall oven/microwave combo, turn the power off at the breaker (or remove the fuse) for about 1 minute, then restore power. When power returns, the display may briefly show “PF”, which indicates a power interruption reset.

Quick reset steps (recommended)

• Turn the oven off using the OFF/CANCEL key.
• Switch the circuit breaker for the oven to OFF (or remove the household fuse).
• Wait about 60 seconds.
• Turn the breaker back ON (or reinstall the fuse).
• Set the clock if prompted.
• Test a basic function like BROIL for a few minutes to confirm heat.

If the control panel seems “stuck” (Control Lock)

This model has a Control Lock feature that disables most keys. If the display shows a lock message or most buttons do nothing, unlock it:

• Touch and hold START for about 5 seconds.
• Confirm normal keys respond again.

What you should see after a successful reset

What you see	What it means	What to do
“PF” on the display	Power failure/interruption was detected	Set clock and test cooking
Display lights briefly	Control powered up normally	Select a cooking mode
No display at all	No power to the unit	Check breaker, wiring, and connections

Why it matters

A hard power reset clears many temporary control glitches (blank display, unresponsive keypad, odd beeping) and is also the first step after an installation or power outage. If the oven still will not operate after reset, the troubleshooting steps in the KEMS378SSS05 owner’s manual help narrow it down.

Last updated: January 2026

Most KitchenAid built-in ovens, including the KitchenAid KEMS378SSS05 wall oven/microwave combo, typically last 15 years with normal household use and basic maintenance. Keeping airflow clear, cleaning correctly, and addressing heating or control issues early helps you reach that lifespan.

What affects how long it lasts

• Heat exposure and ventilation: Built-in units rely on proper cabinet airflow; restricted airflow can shorten the life of controls and wiring.
• Cleaning habits: Using non-abrasive cleaners helps protect stainless and door surfaces.
• Electrical health: Power surges, loose connections, and overheating can stress the electronic control.
• Usage patterns: Daily high-heat baking, frequent broiling, and long self-clean cycles add wear.
• Part replacement history: Replacing common wear parts can extend overall appliance life.

Typical lifespan by component (what to expect)

Component	Typical lifespan	Common symptom when failing
Bake/broil/convection heating elements	8 to 15 years	Slow preheat, uneven baking, no heat
Temperature sensor	8 to 12 years	Overheats, underheats, temperature swings
Cooling fan assembly	7 to 12 years	Loud fan, fan not running, overheating shutdown
Electronic control	7 to 12 years	Dead display, erratic buttons, random beeping

Maintenance that helps you hit 15 years

• Clean stainless surfaces gently and avoid abrasive pads; follow the cleaning guidance in the KEMS378SSS05 owner’s manual.
• Keep vents and intake areas clear so the cooling fan can move air.
• Use self-clean only when needed; let the oven cool fully before trying to open the door.
• If baking temperatures seem off, test and replace the sensor if needed (for this model, see wall oven temperature sensor WPW10131825).
• If the oven overheats or shuts down, inspect the cooling system (for this model, see wall oven cooling fan assembly WP8303972).

Why it matters

A 27-inch electric built-in oven/microwave combo is expensive to replace; extending life often comes down to preventing heat damage to electronics and keeping temperature control accurate.

Last updated: January 2026

On KitchenAid model KEMS378SSS05, the F2E1 error points to a problem with the touchpad or keypad input (a stuck key or a shorted key circuit). We start by resetting power, then checking for moisture or contamination on the control area; if the code returns, the touch control system typically needs service.

Quick reset and basic checks

• Turn the circuit breaker OFF for 5 minutes, then turn it back ON.
• If the display prompts for time, set the clock and try a simple function (like BROIL) to confirm operation.
• Wipe the control panel with a soft, barely damp cloth; dry it completely (moisture can trigger false key signals).
• If the error appears immediately after power-up, avoid repeated resets; focus on inspection and diagnosis.

What to check next (before replacing parts)

• Stuck key feel: Press each key once; none should feel physically stuck.
• Steam and cleaner residue: Heavy steam from boiling pots or overspray from cleaners can seep into the keypad area.
• Power supply issues: A loose house fuse or tripped breaker can cause odd behavior; confirm stable power.
• Wiring connections: If you are qualified to access the control area, look for loose connectors or pinched wires.

Common causes and typical fixes

What you see	Most likely cause	Typical fix
F2E1 returns right after reset	Keypad circuit short or stuck input	Service or replace touch control system components
F2E1 appears after cleaning or heavy steam	Moisture contamination	Dry thoroughly; allow time to air out; retry
Random beeping, unresponsive keys	Touch control failure	Service diagnosis; control-related repair

Why it matters

An F2E1 code is the oven telling us it cannot reliably read the keypad. That can prevent baking, broiling, or safe temperature control, and it can also cause unexpected beeping or canceled cycles.

Where to confirm model-specific steps

Use the troubleshooting and control-operation guidance in the KEMS378SSS05 owner’s manual. If the display shows an error code and normal operation does not return, the installation instructions also direct you to stop operation and contact a qualified technician; see the KEMS378SSS05 installation guide.

Last updated: January 2026