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Error code reference

Jenn-Air Oven Error Code F1E5-8

Secondary ACU fault

Jenn-Air codesJenn-Air oven codes

Secondary ACU fault — ACU Convect 1 Fan Drive open.

First step from the service manual

Unplug range or disconnect power. Inspect connections to main control for loose/unplugged connectors.

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

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What F1E5-8 means on a Jenn-Air oven

The F1E5-8 error code on a Jenn-Air oven indicates a secondary ACU (Appliance Control Unit) fault, specifically an open circuit condition detected in the Convect 1 Fan Drive circuit. The ACU is the main electronic control board that manages oven functions, and the convection fan drive is the circuit pathway responsible for powering and regulating the convection fan motor. An "open" condition means the control is detecting a break in the circuit, which prevents the fan drive from operating and triggers the fault code.

This fault typically points to one of a few failure points: a loose or disconnected wiring harness connector at the main control board, a break in the wiring between the control and the convection fan motor, a failed convection fan motor with an open winding, or an internal failure within the ACU itself. Because the code specifically references an open drive circuit rather than a shorted condition, physical wiring and connector integrity are the first areas to inspect before replacing components.

The first step in diagnosing this code is to disconnect power to the range entirely, then carefully inspect all connectors at the main control board for looseness, corrosion, or pins that have backed out of their housings. If the connectors are secure, the next step is to trace the wiring harness to the convection fan motor and check for continuity through the circuit. A confirmed open in the motor winding or harness will require part replacement to resolve the fault.

Source: manufacturer service documentation.

Common causes of F1E5-8

  1. 01

    Loose or disconnected wiring connector at the control board

    Wiring / connection

    A connector in the harness leading to the convection fan drive circuit may have worked loose from the main control board. Inspecting and reseating all connectors at the ACU is the first and most important diagnostic step.

  2. 02

    Broken or damaged wiring harness

    Part replacement

    A wire in the harness running between the control board and the convection fan motor may have an open break, often caused by heat exposure, pinching, or repeated movement. A continuity test along the harness will confirm this.

  3. 03

    Failed convection fan motor with open winding

    Part replacement

    The convection fan motor itself can develop an open internal winding, which the ACU reads as a broken circuit. Testing the motor for continuity across its terminals will confirm whether the winding has failed.

  4. 04

    Corroded or damaged connector terminals

    Wiring / connection

    Even if connectors appear seated, individual terminal pins can corrode or sustain damage that interrupts the circuit. Inspect terminals closely for oxidation, burn marks, or bent pins.

  5. 05

    Failed ACU (main control board)

    Part replacement

    If all wiring and the fan motor test correctly, the ACU itself may have an internal failure in the fan drive output circuit. Control board replacement is typically a last-resort diagnosis after all other causes are ruled out.

See the test procedure for each cause

Frequently asked questions about F1E5-8

What does F1E5-8 mean on a Jenn-Air oven?
F1E5-8 indicates a secondary ACU fault caused by an open circuit in the Convect 1 Fan Drive. The oven's control board is detecting a break in the electrical pathway that operates the convection fan. This fault can stem from a loose connector, a broken wire, or a failed fan motor. The oven will typically stop functioning normally until the issue is resolved.
Can I fix the F1E5-8 error myself?
If you are comfortable working with appliance wiring, you can start by unplugging the oven and inspecting all connectors at the main control board for looseness or damage. Reseating a loose connector sometimes resolves the fault without any parts needed. However, if the issue involves a broken wire harness, a failed fan motor, or a faulty control board, those repairs are more involved and may require a technician.
Is it safe to use my Jenn-Air oven when the F1E5-8 code is displayed?
It is not recommended to continue using the oven while this fault is active. The code indicates the convection fan drive circuit is open, which means the convection system is not functioning as intended. Operating the oven without a working convection fan can lead to uneven heating and potentially contribute to overheating conditions. Resolve the fault before resuming normal use.
Will resetting the oven clear the F1E5-8 error code?
Disconnecting power may temporarily clear the code, but if the underlying fault in the convection fan drive circuit is still present, the error will return once the oven is powered back on and the control runs its diagnostics. A reset alone is not a fix. The wiring, connectors, and fan motor need to be physically inspected and tested to address the root cause.
How much does it cost to repair a Jenn-Air oven showing the F1E5-8 error?
Repair costs vary depending on the cause. If the fix is a reseated connector, there is no parts cost and minimal labor. A replacement convection fan motor typically costs in the range of $50 to $150 for the part, while a new main control board can range from $150 to $400 or more. Adding professional labor charges, total repair costs can range from around $100 to $500 or higher depending on the fault and your location.

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