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Error code reference

Whirlpool Microwave Error Code F6 E5

No cavity size command

Whirlpool codesWhirlpool microwave codes
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What the F6 E5 error code actually means

Your Whirlpool microwave's control board is missing a required setting that tells it what size the inside cooking cavity is. This usually happens after a control board replacement or a power issue that wiped the microwave's memory. The fix typically involves entering a special diagnostic mode and selecting the correct cavity size from a menu.

Diagnostic procedure

The full F6 E5 procedure

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1
First diagnostic step
Press OFF, OFF, START to enter Diagnostics mode; control should power up in cavity size select mode. Use key #6 and #3 to scroll to correct cavity size and press START.
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Most common causes of F6 E5

Ranked by how often they cause this code
  1. 1Control board replaced without programming
  2. 2Memory loss from power surge or outage
  3. 3Factory programming skipped at assembly
  4. 4Faulty control board unable to retain settings

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Questions people ask about F6 E5

What does F6 E5 mean on a Whirlpool microwave?
F6 E5 means the control board has not been programmed with the cavity size of the microwave. This is a configuration error rather than a component failure. The microwave requires this setting to regulate cooking functions properly. It most often appears after a control board replacement or after a power event wipes the board's memory.
Will resetting my Whirlpool microwave clear the F6 E5 error?
A simple power reset will not clear F6 E5 because the error is caused by missing programming data, not a temporary fault. The cavity size must be actively selected and saved through the Diagnostics mode procedure. Until that setting is stored, the error will return every time the unit powers up.
How much does it cost to fix a Whirlpool microwave F6 E5 error?
If the fix only requires running the cavity size programming procedure, there is no parts cost and the repair can be done without a service call. If the control board cannot retain the setting and must be replaced, expect to pay between $80 and $250 or more for the part depending on the model, plus labor if a technician is needed.
How do I fix the F6 E5 error on my Whirlpool microwave?
Press OFF, OFF, START to enter Diagnostics mode. The control should enter cavity size select mode automatically. Use key #6 and key #3 to scroll to the correct cavity size for your unit, then press START to save the setting. If the error returns after power cycling, the control board may need to be replaced.
Is it safe to use my Whirlpool microwave while F6 E5 is displayed?
The microwave will not operate normally while F6 E5 is active because the control cannot calibrate cooking functions without the cavity size data. Attempting to use it in this state is not recommended. Complete the cavity size programming procedure first to restore normal operation.

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