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Error code reference

Amana Range Error Code F93

Invalid lock/unlock inputs detected.

Invalid lock/unlock inputs detected.

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What F93 means on a Amana range

The F93 error code on an Amana range indicates that the control board has detected invalid or conflicting signals from the door lock mechanism. Specifically, the system monitors inputs from the lock and unlock position sensors on the door latch assembly. When the control receives signals that contradict each other, such as both the locked and unlocked inputs reading active simultaneously, or neither reading active when one should be, the F93 fault is triggered. This condition tells the board that it cannot confirm the true position of the door latch.

The door lock assembly on a range contains a motor-driven latch mechanism along with position switches or sensors that report the latch state back to the electronic control board. These inputs are critical during self-clean cycles, when the door must be confirmed as fully locked before high-temperature operation is allowed. A failure in any part of this feedback loop, whether the latch motor, the position switches, the wiring harness, or the control board itself, can produce conflicting input signals and trigger this fault.

Common sources of the F93 code include a worn or jammed door latch assembly where the mechanical components no longer reach their full travel positions, damaged wiring between the latch assembly and the control board, or faulty position switches within the latch unit itself. In less common cases, the electronic control board may be misreading valid signals due to an internal failure. Identifying which component is at fault typically requires checking the continuity and operation of the latch assembly and inspecting the harness for damaged conductors or loose connectors.

Source: manufacturer service documentation.

Common causes of F93

  1. 01

    Faulty door latch assembly

    Part replacement

    The latch motor or internal position switches inside the latch assembly can wear out or jam, preventing the latch from reaching a fully locked or unlocked position. This causes the control board to receive contradictory or missing position signals.

  2. 02

    Damaged or loose wiring harness

    Wiring / connection

    The wiring between the door latch assembly and the electronic control board can develop broken conductors, chafed insulation, or loose connector terminals. Inspect the harness routing near the door hinge area, where repeated movement causes wear.

  3. 03

    Failed door latch position switch

    Part replacement

    Individual position switches within the latch assembly can fail open or closed, sending a constant incorrect signal to the control board regardless of actual latch position. Continuity testing of each switch will confirm a failure.

  4. 04

    Debris or obstruction in the latch mechanism

    Wiring / connection

    Food debris or grease buildup can physically block the latch from completing its travel, preventing the position switches from actuating correctly. Cleaning the latch area and checking for obstructions is a no-cost first step.

  5. 05

    Defective electronic control board

    Part replacement

    If the latch assembly, wiring, and switches all test correctly, the control board itself may be misinterpreting the input signals due to an internal component failure. This is the least common cause and the most expensive to address.

See the test procedure for each cause

Frequently asked questions about F93

What does F93 mean on a Amana range?
The F93 code means the control board has detected invalid inputs from the door lock and unlock position sensors on the latch assembly. The board cannot confirm whether the door is actually locked or unlocked because the signals it is receiving are contradictory or out of expected range. This fault most often involves the door latch assembly, its wiring, or the position switches within the latch unit.
Can I reset the F93 code to clear it?
You can attempt a reset by disconnecting the range from power for several minutes and then restoring power. However, if the underlying latch or wiring issue has not been corrected, the F93 code will return, often immediately or the next time a self-clean cycle is initiated. A reset alone will not fix the root cause.
Is it safe to use my Amana range while F93 is displayed?
Standard bake and broil functions may still operate, but you should avoid running a self-clean cycle while F93 is active. The self-clean cycle requires a confirmed door lock before reaching high temperatures, and an unresolved latch fault means this safety confirmation is not reliable. Repair the fault before attempting self-clean.
How much does it cost to fix an F93 error on an Amana range?
Repair costs depend on the faulty component. A replacement door latch assembly typically ranges from roughly 50 to 150 dollars for the part, plus labor if a technician is hired. A new electronic control board is more expensive, generally in the range of 150 to 350 dollars for the part. Getting a diagnosis first helps avoid replacing components unnecessarily.
Can I fix the F93 error myself, or do I need a technician?
A knowledgeable DIYer can inspect the wiring harness for visible damage, clean debris from the latch area, and test latch position switches with a multimeter. Replacing the door latch assembly is also a manageable repair for someone comfortable working on appliances. However, if the control board is suspected, a professional diagnosis is recommended before investing in that repair.

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