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Kenmore · 721.80373 Elite Over-the-Range Microwave

Kenmore 721.80373 Elite Over-the-Range Microwave SE Error Fix: Inverter or Magnetron Error

Microwave inverter circuit or magnetron tube has a fault. Microwave may run but produce no heat. Check high-voltage capacitor (DANGER — lethal voltage), magnetron, diode, and inverter board. High-voltage repairs should be done by qualified technicians only.

critical2 fixes available✨ Free fix available

Quick Answer

Error SE on the Kenmore 721.80373 Elite Over-the-Range Microwave means: Inverter or Magnetron Error. The top-ranked community fix is “Test and Replace High-Voltage Components” (hard difficulty, ~90 min, DIY cost: $30-$50). 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: $300-$450.

Other Kenmore Models with Error SE

796.41392 Elite Front-Load Washer

washer · 2 fixes

Other Kenmore 721.80373 Elite Over-the-Range Microwave Error Codes

Door Switch Failure

Oven Sensor Open

Oven Sensor Shorted

Touch Pad / Keypad Shorted

2 fixes

F-4

Humidity Sensor Fault

Control Board Error

Turntable Motor Failure

2 fixes

WAVEGUIDE SCORCHED

Waveguide Cover Scorched

2 fixes

People Also Ask About Kenmore 721.80373 Elite Over-the-Range Microwave Error SE

What does error code SE mean on a Kenmore 721.80373 Elite Over-the-Range Microwave?

Error code SE on the Kenmore 721.80373 Elite Over-the-Range Microwave means: Inverter or Magnetron Error. Microwave inverter circuit or magnetron tube has a fault. Microwave may run but produce no heat. Check high-voltage capacitor (DANGER — lethal voltage), magnetron, diode, and inverter board. High-voltage repairs should be done by qualified technicians only.

How do I fix error code SE on my Kenmore 721.80373 Elite Over-the-Range Microwave?

The most successful fix is "Test and Replace High-Voltage Components" (hard difficulty, ~90 minutes). Estimated DIY cost: $30-$50. HomeMD has 2 community-ranked fixes for this error.

Is error code SE on a Kenmore 721.80373 Elite Over-the-Range Microwave serious?

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

Can I fix Kenmore 721.80373 Elite Over-the-Range Microwave error SE myself?

Yes — the top-ranked community fix ("Test and Replace High-Voltage Components") is rated hard difficulty and takes about 90 minutes. Tools needed: T20 Torx screwdriver, Insulated screwdriver, Multimeter (capacitance and diode test).

How much does it cost to repair Kenmore 721.80373 Elite Over-the-Range Microwave error SE?

DIY cost: $30-$50. Professional repair typically costs $300-$450. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Kenmore 721.80373 Elite Over-the-Range Microwave have?

The Kenmore 721.80373 Elite Over-the-Range Microwave has 8 other known error codes, including: DOOR SWITCH FAIL (Door Switch Failure), F-1 (Oven Sensor Open), F-2 (Oven Sensor Shorted), F-3 (Touch Pad / Keypad Shorted), F-4 (Humidity Sensor Fault), and 3 more.

Which other Kenmore models have the SE error?

Error code SE also appears on 1 other Kenmore model: 796.41392 Elite Front-Load Washer. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Kenmore 721.80373 Elite Over-the-Range Microwave have?

The Kenmore 721.80373 Elite Over-the-Range Microwave has 8 other known error codes:

DOOR SWITCH FAIL — Door Switch Failure (2 fixes)
F-1 — Oven Sensor Open (2 fixes)
F-2 — Oven Sensor Shorted (2 fixes)
F-3 — Touch Pad / Keypad Shorted (2 fixes)
F-4 — Humidity Sensor Fault (2 fixes)
F-5 — Control Board Error (2 fixes)
TURNTABLE STUCK — Turntable Motor Failure (2 fixes)
WAVEGUIDE SCORCHED — Waveguide Cover Scorched (2 fixes)

Which other Kenmore models have the SE error?

Error code SE also appears on 1 other Kenmore model:

796.41392 Elite Front-Load Washer (washer) · 2 fixes

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