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Error code reference

Maytag Cooktop Error Code 12 LEDs flash

Communication failure on control board; control board resets the power board every 15 seconds.

Maytag codesMaytag cooktop codes

Communication failure on control board; control board resets the power board every 15 seconds.

First step from the service manual

Verify connections. If symptoms persist, replace control board.

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

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What 12 LEDs flash means on a Maytag cooktop

The 12 LEDs flash error on a Maytag cooktop indicates a communication failure between the control board and the power board. These two boards work in tandem: the control board manages user input and cooking logic, while the power board handles the actual delivery of electrical power to the heating elements. When the control board loses the ability to communicate reliably with the power board, it flags the fault and enters a recovery cycle, automatically resetting the power board every 15 seconds in an attempt to restore normal communication.

This reset loop is the cooktop's built-in self-recovery mechanism, but it does not resolve the root cause of the failure. The most common trigger is a loose, corroded, or damaged wiring harness connection between the two boards. Vibration over time, heat cycling, or an incomplete connection during a previous repair can all cause the inter-board communication signal to drop out. In some cases, a failing or completely defective control board is the source of the problem, as the board itself may be unable to generate or interpret the communication signal correctly.

Diagnosis should begin with a thorough inspection of all wiring connections between the control board and the power board. Each connector should be seated firmly, with no signs of corrosion, melting, or pin damage. If all connections check out and the 12 LEDs flash condition persists, the control board is the most likely component requiring replacement. The power board may also be a factor, but the control board is the initiating side of the communication link and is typically addressed first.

Source: manufacturer service documentation.

Common causes of 12 LEDs flash

  1. 01

    Loose or disconnected wiring harness

    Wiring / connection

    The ribbon cable or wire harness connecting the control board to the power board may have come loose or partially disconnected. Inspect all connectors for firm seating and signs of corrosion or pin damage.

  2. 02

    Corroded or damaged connector pins

    Wiring / connection

    Heat cycling and moisture can corrode the connector pins on the inter-board harness, degrading the communication signal. Look for discoloration, oxidation, or bent pins at each connector.

  3. 03

    Defective control board

    Part replacement

    If the wiring connections are intact and secure, the control board itself may have failed and is no longer able to maintain communication with the power board. Replacement of the control board is the recommended next step.

  4. 04

    Damaged wiring harness

    Part replacement

    The harness between the two boards may have a broken or shorted wire due to heat damage, pinching, or wear. Carefully inspect the full length of the harness for any visible damage to the wire insulation or conductors.

  5. 05

    Failing power board

    Part replacement

    In less common cases, the power board may have failed in a way that prevents it from responding to the control board's communication signals. If replacing the control board does not resolve the error, the power board should be evaluated.

See the test procedure for each cause

Frequently asked questions about 12 LEDs flash

What does 12 LEDs flash mean on a Maytag cooktop?
When all 12 LEDs flash on a Maytag cooktop, it indicates a communication failure between the control board and the power board. The control board has detected that it cannot communicate with the power board and responds by resetting the power board every 15 seconds. This error prevents normal cooktop operation until the underlying connection or component issue is resolved.
Can I fix the 12 LEDs flash error myself?
The first step is to check that all wiring harness connections between the control board and the power board are firmly seated and free of corrosion or damage, which is something a knowledgeable DIYer can do with the cooktop powered off and unplugged. If the connections are secure and the error continues, the control board will likely need to be replaced, which requires working with high-voltage components and comfort with appliance disassembly. If you are not experienced with appliance repair, professional service is recommended.
Will resetting the cooktop clear the 12 LEDs flash error?
The cooktop is already attempting its own internal reset by cycling the power board every 15 seconds, but this does not resolve the root cause. Cycling the cooktop's power at the breaker may temporarily clear the display, but if the communication failure condition is still present, the error will return. A lasting fix requires addressing the wiring connection or replacing the faulty board.
Is it safe to use my Maytag cooktop while it shows the 12 LEDs flash error?
The cooktop should not be used while this error is active. The 12 LEDs flash condition means the control board and power board cannot communicate properly, which means the cooktop cannot function as intended and heating element behavior may be unpredictable. Discontinue use until the fault is diagnosed and repaired.
How much does it cost to repair the 12 LEDs flash error on a Maytag cooktop?
If the issue is a loose wiring connection, there may be no parts cost, though a service call from a technician would typically run anywhere from $75 to $150 or more depending on your area. If the control board needs replacement, parts and labor combined can range from $200 to $400 or higher depending on the specific model and local labor rates. Getting a diagnostic quote before authorizing repairs is advisable.

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