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Error code reference

Kenmore Range Error Code F62

Missing 60Hz zero-cross synchronization signal from EOC-Relay Board to EOC-Display Board.

Kenmore codesKenmore range codes

Missing 60Hz zero-cross synchronization signal from EOC-Relay Board to EOC-Display Board.

First step from the service manual

Verify the connection between EOC-Relay Board connector J2 pin 5 and EOC-Display Board connector P2 pin 5 (check for continuity). If wiring is good, replace the EOC-Relay Board. If problem persists, replace the EOC-Display Board.

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

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What F62 means on a Kenmore range

The F62 error code on a Kenmore range indicates that the EOC-Display Board is not receiving the 60Hz zero-cross synchronization signal it expects from the EOC-Relay Board. This zero-cross signal is a timing reference derived from the AC power line. The relay board detects each point where the AC sine wave crosses zero volts and transmits that signal to the display board so both boards can coordinate timed operations, including control of heating elements and relay switching. Without this synchronization pulse, the display board cannot properly manage the range's control functions and triggers the F62 fault.

The communication path for this signal runs between EOC-Relay Board connector J2 pin 5 and EOC-Display Board connector P2 pin 5. A break or high-resistance fault anywhere along that wire will interrupt the signal. The most common starting point for diagnosis is verifying continuity on that specific circuit, since a loose connector, damaged wire, or corroded pin can disrupt the signal without any obvious visual damage. If continuity is confirmed and the wiring is intact, the fault shifts to the EOC-Relay Board itself, which may have failed to generate the zero-cross signal due to an internal component failure.

If replacing the EOC-Relay Board does not resolve the F62 code, the EOC-Display Board is the next suspect. The display board may be unable to receive or interpret the incoming synchronization signal due to an internal failure on its input circuitry. Both boards must be functioning correctly and communicating over an intact wiring path for this fault to clear.

Source: manufacturer service documentation.

Common causes of F62

  1. 01

    Loose or disconnected wiring connector

    Wiring / connection

    The connector at J2 pin 5 on the EOC-Relay Board or P2 pin 5 on the EOC-Display Board may have worked loose over time. Inspect both connectors for secure seating and check for bent or backed-out pins.

  2. 02

    Damaged or open wire between boards

    Wiring / connection

    The wire carrying the zero-cross signal between the two boards may be broken, chafed, or have an open circuit. Check for continuity between J2 pin 5 and P2 pin 5 to confirm the wire is intact.

  3. 03

    Failed EOC-Relay Board

    Part replacement

    If wiring and connectors check out, the EOC-Relay Board may have an internal failure preventing it from generating the 60Hz zero-cross synchronization signal. Replacing the relay board is the next step after ruling out wiring faults.

  4. 04

    Failed EOC-Display Board

    Part replacement

    If replacing the EOC-Relay Board does not clear the F62 code, the EOC-Display Board may have failed internally and cannot receive or process the incoming synchronization signal. Replacement of the display board is indicated at this stage.

  5. 05

    Corroded or oxidized connector pins

    Wiring / connection

    Corrosion on the pins at either connector can cause high resistance that effectively breaks the signal path even when the connector appears seated. Inspect the pins at J2 pin 5 and P2 pin 5 for discoloration or oxidation.

See the test procedure for each cause

Frequently asked questions about F62

What does F62 mean on a Kenmore range?
F62 indicates that the EOC-Display Board is not receiving the 60Hz zero-cross synchronization signal from the EOC-Relay Board. This signal is used to coordinate timing between the two control boards. The fault points to a wiring problem between the boards or a failure of one of the two EOC boards. Diagnosis starts by checking continuity on the wire between J2 pin 5 on the relay board and P2 pin 5 on the display board.
Can I fix the F62 error myself on a Kenmore range?
A technician comfortable with basic electrical diagnostics can check the wiring continuity between the two EOC board connectors without replacing any parts. If the wiring is good, the repair requires replacing the EOC-Relay Board and possibly the EOC-Display Board, which involves working inside the range's control area. If you are not comfortable working around appliance wiring, having a qualified technician handle the repair is the safer option.
Is it safe to use my Kenmore range while the F62 code is active?
The F62 fault reflects a loss of synchronization between the two main control boards, which can affect how the range manages heating element timing and relay operation. Using the range in this condition is not recommended, as the control system may not function reliably. It is best to stop using the range until the fault is diagnosed and repaired.
Will resetting the range clear the F62 error code?
Disconnecting power to the range for a few minutes may temporarily clear the F62 code, but if the underlying cause is a wiring fault or a failed board, the error will return once the range is powered back on. A reset alone does not fix the hardware problem causing the fault. Proper diagnosis and repair of the wiring or affected board is necessary for a lasting resolution.
How much does it cost to repair a Kenmore range F62 error?
If the issue is only a loose connector or damaged wire, the repair cost can be minimal, primarily covering a technician's diagnostic time if you hire one. If the EOC-Relay Board needs replacement, parts typically range from around $75 to $200 or more depending on the specific model, plus labor. Replacing the EOC-Display Board carries a similar or higher parts cost. In cases where both boards require replacement, total repair costs including labor could range from $200 to $500 or beyond.

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