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Error code reference

Jenn-Air Oven Error Code F1E5-1

Secondary ACU fault

Jenn-Air codesJenn-Air oven codes

Secondary ACU fault — Incorrect hardware feedback DLB Relay.

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 F1E5-1 means on a Jenn-Air oven

The F1E5-1 error code on a Jenn-Air oven indicates a secondary ACU (Appliance Control Unit) fault related to incorrect hardware feedback from the DLB (Double Line Break) relay. The DLB relay is a critical safety component that controls both legs of the 240-volt supply to high-wattage elements such as the bake and broil elements. The ACU continuously monitors feedback signals from this relay to confirm it is opening and closing correctly. When the feedback signal does not match the expected state, the control logs F1E5-1 and may shut down the affected circuit.

The fault is classified as a secondary ACU fault, meaning the control board itself has detected an internal or external discrepancy in how the DLB relay circuit is reporting its status. This can stem from a failed relay on the control board, a wiring harness problem between the ACU and the relay circuit, or a connector that has worked loose over time due to heat cycling and vibration. Because the DLB relay directly manages power delivery to heating elements, the control treats any feedback mismatch as a fault condition requiring immediate attention.

The first diagnostic step is to unplug the range or disconnect power at the breaker, then carefully inspect all connectors leading to the main control board. Loose, corroded, or partially unseated connectors can interrupt the feedback signal and trigger this code without any actual relay failure. If connections are secure and the code returns after restoring power, the main control board is the most likely component requiring replacement.

Source: manufacturer service documentation.

Common causes of F1E5-1

  1. 01

    Loose or unplugged wiring connector at the main control board

    Wiring / connection

    Heat cycling over time can cause connectors to work loose from the ACU, interrupting the feedback signal from the DLB relay circuit. Inspect all connectors at the control board for secure seating and signs of corrosion or heat damage.

  2. 02

    Failed DLB relay on the main control board

    Part replacement

    The Double Line Break relay is mounted on the main control board and can fail internally, causing the ACU to receive an incorrect feedback signal. If wiring checks out, the control board assembly is the likely failed component.

  3. 03

    Damaged or shorted wiring harness

    Part replacement

    A wiring harness that has been pinched, burned, or damaged can send incorrect signals to the ACU, mimicking a relay feedback fault. Inspect the harness routing from the control board to the relay circuit for visible damage.

  4. 04

    Control board firmware or internal ACU fault

    Part replacement

    In some cases the ACU itself may have an internal fault causing it to misread the relay feedback signal even when the relay and wiring are functioning correctly. Replacing the main control board resolves this scenario.

See the test procedure for each cause

Frequently asked questions about F1E5-1

What does F1E5-1 mean on a Jenn-Air oven?
F1E5-1 indicates a secondary ACU fault caused by incorrect hardware feedback from the DLB (Double Line Break) relay. The control board monitors this relay, which manages 240-volt power delivery to the heating elements, and has detected a mismatch between the expected and actual relay status. The oven will typically interrupt normal operation until the fault is resolved.
Can I fix the F1E5-1 error code myself?
The first step any technician would take is to disconnect power and inspect all wiring connectors at the main control board for loose or corroded connections, which is a task many capable DIYers can perform safely. If reconnecting all connectors does not clear the fault after restoring power, resolving the issue typically requires replacing the main control board, which involves working near line-voltage components and is best handled by a qualified technician.
Will resetting the oven clear the F1E5-1 code?
Unplugging the oven or tripping the breaker for several minutes may temporarily clear the code, but it will return if the underlying cause is not corrected. A reset is useful as a first step to confirm whether the fault is intermittent or persistent, but it does not repair a failed relay or a faulty control board.
Is it safe to use my Jenn-Air oven while F1E5-1 is displayed?
The DLB relay is a safety-critical component that controls both legs of high-voltage power to the heating elements, and a confirmed fault in this circuit should be taken seriously. It is not recommended to continue using the oven for cooking until the fault has been diagnosed and repaired. Operating with a compromised relay feedback circuit could lead to element control issues or create an unsafe condition.
How much does it cost to repair a Jenn-Air oven showing F1E5-1?
If the fix is simply reseating a loose connector, there may be little to no parts cost beyond a service call fee, which typically ranges from $75 to $150 depending on your area. If the main control board needs replacement, parts and labor combined generally range from $300 to $600 or more depending on the specific model and local labor rates.

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