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Error code reference

Kenmore Dryer Error Code EAF

Microcontroller has been reset by internal Watchdog timer.

Kenmore codesKenmore dryer codes

Microcontroller has been reset by internal Watchdog timer.

First step from the service manual

Clear code, exit mode and start dryer. If problem persists, replace electronic control.

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

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What EAF means on a Kenmore dryer

The EAF error code on a Kenmore dryer indicates that the microcontroller on the electronic control board has been reset by its internal Watchdog timer. The Watchdog timer is a built-in hardware circuit designed to monitor the microcontroller's software execution. If the processor stops responding, hangs, or enters an unrecoverable loop, the Watchdog timer automatically forces a system reset to attempt recovery. This is a self-protection mechanism, but when it triggers and logs a fault code, it signals that something prevented the microcontroller from operating normally.

The root cause can originate from the control board itself, such as a failing processor, corrupted firmware, or degraded components on the board that cause erratic voltage behavior. External factors can also trigger Watchdog resets, including power supply inconsistencies, voltage spikes from the home electrical supply, or brief interruptions that disrupt normal processor operation. In some cases, the reset is a one-time anomaly, which is why the first diagnostic step is to clear the code and run the dryer to see if it returns.

If the EAF code reappears after clearing and restarting the dryer, the electronic control board is the suspected failed component. There is no field-level repair for a Watchdog fault at the component level since the processor and its supporting circuitry are integrated onto the control board. Replacement of the electronic control board is the recommended corrective action when the fault persists.

Source: manufacturer service documentation.

Common causes of EAF

  1. 01

    Failing electronic control board

    Part replacement

    The microcontroller or supporting circuitry on the control board may be degraded, causing repeated processor hangs that trigger the Watchdog reset. If the code returns after clearing, the control board is the most likely failed component.

  2. 02

    Power supply voltage irregularities

    Wiring / connection

    Voltage spikes, sags, or brief outages from the home electrical supply can disrupt the microcontroller and cause a Watchdog-triggered reset. Check that the dryer's circuit breaker is fully seated and that outlet voltage is within the required range.

  3. 03

    Transient electrical event or one-time anomaly

    Wiring / connection

    A single power fluctuation or static event can cause a one-time Watchdog reset without any underlying hardware failure. Clearing the code and running the dryer is enough to confirm whether this was the case.

  4. 04

    Corrupted or unstable control board firmware

    Part replacement

    In rare cases, the microcontroller's firmware can enter a state it cannot recover from, repeatedly triggering the Watchdog timer. This condition cannot be corrected in the field and requires control board replacement.

See the test procedure for each cause

Frequently asked questions about EAF

What does EAF mean on a Kenmore dryer?
The EAF code means the dryer's microcontroller was reset by its internal Watchdog timer, which is a safety circuit that restarts the processor when it stops responding normally. This can be caused by a power fluctuation or a failing control board. The first step is to clear the code and run the dryer to see if the fault returns. If it does, the electronic control board typically needs to be replaced.
How do I fix the EAF error on my Kenmore dryer?
Start by clearing the EAF code, exiting the diagnostic mode, and running a normal drying cycle. If the code does not return, no further action is needed. If the error reappears, the electronic control board is the recommended replacement component, as the Watchdog fault points to an internal processor or board-level failure that cannot be repaired at the component level.
Will resetting my Kenmore dryer clear the EAF code?
Clearing the code through the diagnostic mode is the correct first step and may resolve the issue if the reset was caused by a one-time power event. However, if the underlying cause is a failing control board, the EAF code will return after the reset once the dryer is operated again. Resetting alone does not repair a defective control board.
Is it safe to use my Kenmore dryer when the EAF code is showing?
The EAF code indicates a control board fault, not a fire or heating hazard directly. However, an unreliable control board can cause unpredictable dryer behavior, so it is best to avoid extended unattended operation until the fault is diagnosed. Clear the code and monitor the dryer closely during a test cycle to assess whether it is operating normally.
How much does it cost to fix the EAF error on a Kenmore dryer?
If the EAF code requires an electronic control board replacement, parts alone typically range from roughly $80 to $250 depending on the specific dryer model. Adding professional labor, the total repair cost generally falls in the range of $150 to $400. If the fault was a one-time anomaly that clears without returning, there is no parts cost involved.

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