Error code reference

Whirlpool Microwave Error Code F3H

Humidity sensor failure. There is a 30-second delay (approximate) before F3H is displayed.

SourceWhirlpool Microwave - Tech Sheet: Safety & Failure Codes (W10404763)Failure Code Indications

Whirlpool codes Whirlpool microwave codes

Diagnostic procedure

The full F3H procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Unplug microwave oven or disconnect power, then connect a new humidity sensor to the PCBA (at P1).

SourceWhirlpool Microwave - Tech Sheet: Safety & Failure Codes (W10404763)Failure Code Indications

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

90 manuals in the MyPros+ library document this code for Whirlpool microwave.

Models covered by the manuals that document this code

More models are covered than are listed here.

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The full F3H procedure

Where this code is documented

Models covered by the manuals that document this code

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