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Error code reference

Amana Microwave Error Code F

Controller self-diagnostic failure indicator displayed when the controller is defective during the self-diagnostic test sequence.

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What the F error code actually means

The F code means your microwave ran an internal self-check and found a problem with its own control board, the electronic brain that runs everything. Before assuming the board needs to be replaced, the first thing to try is running the self-test again, since a temporary glitch can sometimes trigger this code. If the error keeps coming back, the control board has likely failed and will need to be replaced by a technician.

Diagnostic procedure

The full F procedure

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1
First diagnostic step
Repeat test sequence to verify normal operation before replacing controller.
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Most common causes of F

Ranked by how often they cause this code
  1. 1Defective control board
  2. 2Transient power surge or voltage spike
  3. 3Moisture or contamination on the control board
  4. 4Failed solder joints or cracked board traces
  5. 5Intermittent power supply to the control board

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Questions people ask about F

What does F mean on a Amana microwave?
The F code on an Amana microwave is a controller self-diagnostic failure indicator. It means the microwave ran its internal self-test and the control board did not pass. This code points directly at the controller as the suspected faulty component. If the code appears, the recommended first step is to repeat the self-diagnostic test to rule out a temporary glitch.
Is it safe to use my Amana microwave when it shows the F error code?
You should not continue using the microwave while the F error code is active. The error indicates the controller failed its own self-test, meaning the board controlling all functions, including safety interlocks, is suspect. Operating the unit in this condition could result in unpredictable behavior. Resolve the error before resuming normal use.
How much does it cost to repair an Amana microwave showing the F error code?
If only the diagnostic test needs to be repeated and no parts are required, there is no parts cost. If the control board needs replacement, parts and labor costs typically range from around $100 to $250 or more depending on the specific model and service rates in your area. Given the cost of a new microwave, it is worth getting a repair estimate first to determine whether replacement or repair is the better value.
Can I fix the F error code myself without replacing parts?
Yes, in some cases. The first step is to repeat the self-diagnostic test sequence, since a transient power event can cause a one-time failure that does not repeat. If the F code clears and does not return, no parts are needed. If the code persists through multiple test attempts, the control board will need to be replaced, which is a more involved repair.
Will resetting the microwave clear the F error code?
A reset may temporarily clear the code if the failure was caused by a transient voltage event rather than a true board failure. To reset, unplug the microwave for a minute, then plug it back in and run the self-diagnostic sequence again. If the F code returns, the control board has a persistent fault and resetting alone will not resolve the problem.

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