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Error code reference

GE Dishwasher Error Code F22

Replace inverter.

GE codesGE dishwasher codes

Replace inverter.

First step from the service manual

Replace inverter.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F22 means on a GE dishwasher

The F22 error code on a GE dishwasher indicates a failed or faulty inverter board. The inverter is a critical electronic component that converts DC power to the variable-frequency AC power used to control the wash pump motor speed. When the control system detects that the inverter is not operating correctly or has failed entirely, it throws the F22 code and halts operation to prevent further damage to the motor or associated wiring.

Inverter failures can stem from several root causes. Power surges or voltage spikes can damage the inverter's internal components, including capacitors and transistors. Overheating due to poor ventilation under the dishwasher or a blocked cooling path can also degrade inverter performance over time. In some cases, moisture intrusion from leaks within the tub can reach the inverter board and cause corrosion or short circuits on the board's surface.

Because the diagnostic step for F22 points directly to inverter replacement, this is not a code that resolves through resets or minor adjustments. The inverter must be physically inspected for visible damage such as burnt components or corrosion, and if damage is confirmed or the board fails basic function checks, replacement is the required repair. This is a component-level fix that typically requires access to the dishwasher's underside or interior panel where the inverter board is mounted.

Source: manufacturer service documentation.

Common causes of F22

  1. 01

    Failed inverter board

    Part replacement

    The inverter board itself has reached end of life or suffered an internal component failure. This is the primary cause indicated by the F22 code, and replacement of the inverter is the required fix.

  2. 02

    Power surge or voltage spike

    Part replacement

    A sudden surge in electrical supply can burn out transistors or capacitors on the inverter board. Look for visible scorch marks or burnt smell near the board.

  3. 03

    Moisture or water intrusion

    Part replacement

    A leak inside the dishwasher tub can allow water to reach the inverter board, causing corrosion or a short circuit. Inspect the board and surrounding area for corrosion or water staining.

  4. 04

    Overheating due to restricted airflow

    Part replacement

    If the dishwasher's underside is poorly ventilated or the inverter's thermal protection has been repeatedly triggered, the board can fail prematurely. Check for debris blocking airflow around the unit.

  5. 05

    Faulty wiring harness connection to inverter

    Wiring / connection

    A loose, corroded, or broken wire connector between the control board and the inverter can cause the F22 code to appear. Inspect all connectors at the inverter for secure seating and corrosion before condemning the board.

See the test procedure for each cause

Frequently asked questions about F22

What does F22 mean on a GE dishwasher?
The F22 code on a GE dishwasher indicates that the inverter board has failed or is not functioning correctly. The inverter controls power delivery to the wash pump motor, and when it fails, the dishwasher cannot operate. The required repair is replacement of the inverter board.
Can I fix the F22 error myself, or do I need a technician?
A knowledgeable DIYer with experience in appliance repair can replace the inverter board, but it does involve accessing internal components and working near electrical parts. If you are not comfortable working with appliance electronics, it is safer to hire a qualified technician. Always disconnect power to the dishwasher before beginning any repair.
Will resetting my GE dishwasher clear the F22 error?
No, a reset will not resolve the F22 error. This code points to a hardware failure of the inverter board, and the problem will return immediately or prevent the dishwasher from completing a cycle. The inverter must be replaced to clear the code permanently.
Is it safe to use my GE dishwasher while it shows the F22 code?
Running the dishwasher with an active F22 code is not recommended. A failed inverter means the wash pump motor is not being controlled properly, which can cause the dishwasher to not clean dishes, run abnormally, or potentially strain other components. Disconnect the unit and arrange for repair before use.
How much does it cost to fix a GE dishwasher F22 error?
The cost to repair an F22 error typically falls in the range of $150 to $400 depending on the specific model, the price of the replacement inverter board, and whether you hire a technician or do the repair yourself. Parts alone can range from $80 to $200 or more. Labor charges from a repair technician will add to the total cost.

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