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Error code reference

Maytag Cooktop Error Code 9 LEDs flash

A/D failure on power board

Maytag codesMaytag cooktop codes

A/D failure on power board - electronic control locked, no audible alarm.

First step from the service manual

Replace power board.

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

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What 9 LEDs flash means on a Maytag cooktop

The 9 LEDs flash error on a Maytag cooktop indicates an analog-to-digital (A/D) conversion failure located on the power board. The A/D converter is an integrated circuit function on the power board that translates analog voltage or sensor signals into digital data the electronic control can process. When this conversion process fails or produces out-of-range readings, the control system detects the fault and responds by locking out all cooktop functions. There is no audible alarm associated with this fault, so the flashing LED pattern is the only user-visible indicator.

Because the A/D failure is internal to the power board circuitry, there are no external wiring or sensor substitutions that will resolve the fault. The failure can result from component degradation on the board, heat stress over time, voltage spikes from the power supply, or internal circuit failure within the A/D converter itself. Since the electronic control locks completely, no cooking functions are accessible while this code is active.

The prescribed first diagnostic step is direct replacement of the power board. Unlike some faults where individual sensors or wiring harnesses can be swapped and tested first, an A/D failure points specifically to the board-level hardware. Technicians should confirm the correct replacement board for the specific cooktop model before ordering, as power boards vary by configuration. After installing the replacement board, verify all connections are fully seated before restoring power to confirm the fault is cleared.

Source: manufacturer service documentation.

Common causes of 9 LEDs flash

  1. 01

    Internal power board A/D converter failure

    Part replacement

    The analog-to-digital converter circuit on the power board has failed internally, which is the direct cause of this fault. This is a board-level failure that cannot be repaired by replacing external components.

  2. 02

    Heat stress damage to power board

    Part replacement

    Prolonged exposure to high cooking temperatures can degrade solder joints and onboard components over time, leading to A/D conversion errors. Inspect the board for discoloration or visibly damaged components, though replacement is still required.

  3. 03

    Voltage spike or power surge damage

    Part replacement

    A sudden surge from the household electrical supply can damage the sensitive A/D circuitry on the power board. If the fault appeared after a power outage or storm, surge damage is a likely contributor.

  4. 04

    Loose or corroded board connector

    Wiring / connection

    A poor connection at the power board harness connector could cause signal integrity issues that trigger an A/D fault. Inspect all connectors to the power board for corrosion or incomplete seating before condemning the board, though board replacement remains the primary corrective action.

See the test procedure for each cause

Frequently asked questions about 9 LEDs flash

What does 9 LEDs flash mean on a Maytag cooktop?
When all 9 LEDs flash on a Maytag cooktop, it indicates an analog-to-digital (A/D) conversion failure on the power board. This internal circuit fault causes the electronic control to lock out completely, preventing any cooking functions from operating. There is no audible alarm with this code, so the flashing LEDs are the only indication. The cooktop will remain locked until the power board is replaced.
Can I fix the 9 LEDs flash error myself on a Maytag cooktop?
The repair requires replacing the power board, which involves working with a hardwired 240-volt appliance. Technicians with experience in appliance electronics can perform this replacement, but homeowners who are not comfortable working with high-voltage wiring should hire a qualified appliance repair technician. There are no software resets or sensor replacements that will resolve this specific fault.
Is it safe to use my Maytag cooktop while 9 LEDs are flashing?
No, you should not attempt to use the cooktop while this error is active. The 9 LEDs flash code means the electronic control has locked the unit due to an internal board failure. All cooking functions are disabled as a result, and attempting to bypass the lockout is not recommended. The cooktop should remain powered off until the power board is replaced.
Will resetting or unplugging my Maytag cooktop clear the 9 LEDs flash error?
No, a power reset will not clear this fault. The 9 LEDs flash error is caused by a hardware failure inside the power board, specifically the A/D converter circuit. Because the failure is component-level, cycling power will not restore normal operation. The fault will return immediately upon power restoration until the defective power board is replaced.
How much does it cost to fix the 9 LEDs flash error on a Maytag cooktop?
Repair costs vary depending on the specific cooktop model and the cost of the replacement power board, but parts alone typically range from $80 to $250 or more for induction or electric cooktop power boards. If you hire a technician, labor costs can add another $100 to $200 depending on your location and service provider. It is worth comparing the total repair estimate against the age and replacement cost of the cooktop before proceeding.

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