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

KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave F5 Error Fix: Control Board Failure

The microwave control board has an internal failure. Try resetting by disconnecting power at the breaker for 2 minutes. If code returns after power restore, the control board needs replacement. This is typically an irreparable board-level failure.

High severity2 fixes available✨ Free fix available
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Quick Answer

Error F5 on the KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave means: Control Board Failure. The top-ranked community fix is “Replace the Microwave Control Board” (hard difficulty, ~60 min, DIY cost: $50-$70). 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:

  • This is a high severity error — continued use may cause damage or a safety hazard
  • 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: $250-$350.

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
F1

Oven Cavity Thermistor Open/Shorted

2 fixes
F2

Shortkey / Keypad Shorted

2 fixes
F3

Touchpad / Keypad Open Circuit

2 fixes
FAN NOISY

OTR Exhaust Fan Noisy or Weak

2 fixes
LIGHT OUT

Interior Light Not Working

2 fixes
SE

Sensor Error — Humidity Sensor

2 fixes

People Also Ask About KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave Error F5

What does error code F5 mean on a KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave?
Error code F5 on the KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave means: Control Board Failure. The microwave control board has an internal failure. Try resetting by disconnecting power at the breaker for 2 minutes. If code returns after power restore, the control board needs replacement. This is typically an irreparable board-level failure.
How do I fix error code F5 on my KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave?
The most successful fix is "Replace the Microwave Control Board" (hard difficulty, ~60 minutes). Estimated DIY cost: $50-$70. HomeMD has 2 community-ranked fixes for this error.
Is error code F5 on a KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave serious?
This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.
Can I fix KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave error F5 myself?
Yes — the top-ranked community fix ("Replace the Microwave Control Board") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Anti-static wrist strap.
How much does it cost to repair KitchenAid KMHS120ESS 30 in. 1000-Watt Over-the-Range Microwave error F5?
DIY cost: $50-$70. Professional repair typically costs $250-$350. 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.
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:

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