Skip to main contentStart diagnosing F4E9 on your Whirlpool hood
What this code means
Popcorn error / SmartPop sound failure.
First step from the service manual
Enter Diagnostics mode (CANCEL-CANCEL-START), press POPCORN, then knock on microwave oven door no fewer than 12 times within 5 seconds to check if counter display operates properly.
Next steps: diagnose the root cause
1
Verify the error code is active
Power cycle the unit and see if the code returns. If it does, the fault is persistent and requires diagnosis.
2
Get the full diagnostic procedure
Get step-by-step guidance, test values, and wiring diagrams from the OEM service manual.
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Access Whirlpool hood service manuals, wiring schematics, exploded parts views, and error code references on MyPros+.