📡Microwave

KitchenAid · KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave

KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave SE Error Fix: Sensor Error — Humidity Sensor

The humidity/steam sensor detected an abnormal reading during a sensor cook cycle. The sensor may be coated with grease or food film. Clean the interior thoroughly, especially the ceiling area where the humidity sensor is located. Ensure the interior is dry before starting a sensor cook cycle. Do not open the door during sensor cook.

Low severity2 fixes available✨ Free fix available

Quick Answer

Error SE on the KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave means: Sensor Error — Humidity Sensor. The top-ranked community fix is “Replace Humidity Sensor Assembly” (medium difficulty, ~60 min, DIY cost: $10-$25). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · microwave

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many microwave repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $130-$200.

Other KitchenAid Models with Error SE

KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator

refrigerator · 2 fixes

KRMF706ESS 25.8 cu. ft. Multi-Door Freestanding Refrigerator

refrigerator · 2 fixes

Other KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave Error Codes

ARCING INSIDE

Arcing / Sparking Inside Cavity

2 fixes

DOOR LATCH BROKEN

Door Latch / Handle Broken

2 fixes

Oven Cavity Thermistor Open/Shorted

2 fixes

Shortkey / Keypad Shorted

2 fixes

Touchpad / Keypad Open Circuit

2 fixes

Control Board Failure

2 fixes

FAN NOISY

OTR Exhaust Fan Noisy or Weak

2 fixes

LIGHT OUT

Interior Light Not Working

2 fixes

People Also Ask About KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave Error SE

What does error code SE mean on a KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave?

Error code SE on the KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave means: Sensor Error — Humidity Sensor. The humidity/steam sensor detected an abnormal reading during a sensor cook cycle. The sensor may be coated with grease or food film. Clean the interior thoroughly, especially the ceiling area where the humidity sensor is located. Ensure the interior is dry before starting a sensor cook cycle. Do not open the door during sensor cook.

How do I fix error code SE on my KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave?

The most successful fix is "Replace Humidity Sensor Assembly" (medium difficulty, ~60 minutes). Estimated DIY cost: $10-$25. HomeMD has 2 community-ranked fixes for this error.

Is error code SE on a KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave serious?

This error is rated low severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave error SE myself?

Yes — the top-ranked community fix ("Replace Humidity Sensor Assembly") is rated medium difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Phillips screwdriver, Multimeter.

How much does it cost to repair KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave error SE?

DIY cost: $10-$25. Professional repair typically costs $130-$200. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave have?

The KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave has 8 other known error codes, including: ARCING INSIDE (Arcing / Sparking Inside Cavity), DOOR LATCH BROKEN (Door Latch / Handle Broken), F1 (Oven Cavity Thermistor Open/Shorted), F2 (Shortkey / Keypad Shorted), F3 (Touchpad / Keypad Open Circuit), and 3 more.

Which other KitchenAid models have the SE error?

Error code SE also appears on 2 other KitchenAid models: KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator, KRMF706ESS 25.8 cu. ft. Multi-Door Freestanding Refrigerator. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave have?

The KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave has 8 other known error codes:

ARCING INSIDE — Arcing / Sparking Inside Cavity (2 fixes)
DOOR LATCH BROKEN — Door Latch / Handle Broken (2 fixes)
F1 — Oven Cavity Thermistor Open/Shorted (2 fixes)
F2 — Shortkey / Keypad Shorted (2 fixes)
F3 — Touchpad / Keypad Open Circuit (2 fixes)
F5 — Control Board Failure (2 fixes)
FAN NOISY — OTR Exhaust Fan Noisy or Weak (2 fixes)
LIGHT OUT — Interior Light Not Working (2 fixes)

Which other KitchenAid models have the SE error?

Error code SE also appears on 2 other KitchenAid models:

KRFC300ESS 20 cu. ft. Counter-Depth French Door Refrigerator (refrigerator) · 2 fixes
KRMF706ESS 25.8 cu. ft. Multi-Door Freestanding Refrigerator (refrigerator) · 2 fixes

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