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Whirlpool service — Whirlpool Microwave F3C Code

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Whirlpool Microwave F3C Code Cavity 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 F3C
Appliance Microwave
Content status Verified
Quick answer

Meaning of F3C and the reset sequence for Whirlpool over-the-range microwaves.

Model note: Whirlpool reuses codes across series and model years, so F3C 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 Cavity Temperature Thermistor or the associated wiring.

A microwave that shows F3C may have a fault with the cavity temperature thermistor or its wiring.

Models covered: over-the-range microwaves.

Reset sequence

Remove power at the breaker or the cord and keep it removed for one (1) minute. When time is up, switch the breaker on. Hold off for one (1) minute and note whether F3C comes back. Try the microwave again to verify it operates.

If it comes back: If F3C reappears, a qualified technician is the next call.

See also

Also see F3T3 (the hood temperature thermistor). F3H1 is close by and is about the humidity sensor. Compare with F2Q1, which concerns the touchpad.

Repair help for Whirlpool microwaves

To arrange repair in the Miami, New York, Houston, Los Angeles and San Diego metro areas, dial (844) 968-2053. The person who answers will want the model number, the code (F3C) and any steps you have taken; see also oven repair.

Source: Whirlpool Product Help: F3C – Error Code – 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.

Book a Repair (844) 968-2053

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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.
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  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