Written by
Maya Ortiz Appliance Repair Content SpecialistPublished October 20, 2026
Whirlpool®
Code overviewat a glance.
The facts for this Whirlpool error, a plain-language snapshot, and what to confirm against your model number.
F3H1
Error codeF3H1
ApplianceMicrowave
Quick answer
What F3H1 means on a Whirlpool over-the-range microwave and how to try a power reset.
Model note: Whirlpool reuses codes across series and model years, so F3H1 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Whirlpool®
What this codemay mean.
A plain-language reading of the code — always confirm against your model’s documentation.
Mean
There may be a problem with the Humidity Sensor or the associated wiring.
Your microwave is showing F3H1, which Whirlpool ties to the Humidity Sensor or the associated wiring. The entry is written for over-the-range microwaves.
Reset steps from the manual
Interrupt power at the breaker for one (1) minute.
Restore the power supply, either at the breaker or at the outlet.
Keep an eye on the display for one (1) minute and see whether F3H1 returns.
Then confirm operation.
Persistent F3H1 errors call for a qualified technician.
F3T1 – another code about the user interface thermistor.
F4E1 deals with the cavity temperature thermistor; easy to mix up with this one.
Service for your Whirlpool microwave
Whirlpool microwave service in Los Angeles is available by phone at (310) 448-6692. Details on microwave repair are on the site. Keep the code F3H1, the model number and your reset notes handy when you call.
Stop immediately if you notice smoke, sparks, a burning smell, gas odor, or water near electrical parts.
Safe
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.
Whirlpool®
Seeing this codeon your appliance?
Book an Whirlpool appliance service visit for a clear estimate and approval before any repair.
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