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Whirlpool service — Whirlpool Microwave F4E4 Code

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Whirlpool Microwave F4E4 Code Humidity Thermistor

Book a Repair (844) 968-2053
Daniel Reeves Written by Daniel Reeves Appliance Repair Content Specialist Published October 20, 2026

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Code overview at a glance.

The facts for this Whirlpool error, a plain-language snapshot, and what to confirm against your model number.

Error code F4E4
Appliance Microwave
Content status Verified
Quick answer

F4E4 may mean a Humidity Thermistor or wiring problem; the manual says to cycle power for one minute.

Model note: Whirlpool reuses codes across series and model years, so F4E4 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

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What this code may mean.

A plain-language reading of the code — always confirm against your model’s documentation.

There may be a problem with the Humidity Thermistor or the associated wiring.

Reading the F4E4 display

A code of F4E4 on an over-the-range Whirlpool microwave refers to the Humidity Thermistor and its wiring. Checking either one is a technician’s job.

Your reset checklist

  • Power down at the breaker, or unplug, and wait one minute.
  • Switch the power back on.
  • Stand by for a minute and see if the code returns.
  • Use the microwave normally to verify it works.

Easily confused codes

F4E9 is the Smart Pop Control code, and F3T4 involves the Magnetron Temperature Thermistor.

Service in the Miami, New York, Houston, Los Angeles and San Diego areas

Phone (844) 968-2053 if the display shows F4E4 again. Visits are arranged in the Miami, New York, Houston, Los Angeles and San Diego metro areas, and it helps to have the model number and your reset notes ready. See oven repair for more.

Source: Product Help: F4E4 Over-the-Range Microwave

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Safety warning before you continue.

Stop immediately if you notice smoke, sparks, a burning smell, gas odor, or water near electrical parts.

Important

Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.

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Seeing this code on your appliance?

Book an Whirlpool appliance service visit for a clear estimate and approval before any repair.

Experienced technicians, clear diagnostics, and workmanship coverage on completed repairs.

Book a Repair (844) 968-2053

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Ready to restore your Whirlpool appliance?

Book a repair online or call us — clear estimates, approval before any work, and a workmanship warranty on completed repairs.

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Tell us what’s wrong — we’ll take it from there.

Share a few details and we’ll confirm an appointment. Prefer to talk? Call us and we’ll help right away.

Prefer to call? (844) 968-2053
  1. Share the symptom Tell us the Whirlpool model and what’s going wrong.
  2. Confirm a window We’ll schedule a visit that fits your day.
  3. Approve before work You get a clear estimate — nothing starts without your OK.
Phone (844) 968-2053
Email info@whirlpoolservicecenter.support
Hours Mon–Sat: 8:00 AM – 7:00 PM
Service area Serving Miami, New York, Houston, Los Angeles and San Diego metro areas.
Response time Appointment timing depends on ZIP code, route capacity, and appliance type.
(844) 968-2053 Book a Repair