Error code reference

Whirlpool Microwave Error Code F4E9

MW relay synchronization Error 1 - Microwave relay synchronization failure.

SourceWhirlpool Microwave - Tech Sheet: Error Codes & Diagnostics (W11646013)

Whirlpool codes Whirlpool microwave codes

Diagnostic procedure

The full F4E9 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

Enter Diagnostics mode (CANCEL - CANCEL - START), press ACCUPOP, then knock on microwave oven door no fewer than 12 times within 5 seconds to check if counter display operates properly.

SourceWhirlpool Microwave - Tech Sheet: Service & Diagnostics (W11038416)p. 2-3

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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

93 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 F4E9 procedure

Where this code is documented

Models covered by the manuals that document this code

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