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Error code reference

Jenn-Air Oven Error Code F1E5-5

Secondary ACU fault

Jenn-Air codesJenn-Air oven codes

Secondary ACU fault — ACU Broil relay 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 F1E5-5 means on a Jenn-Air oven

The F1E5-5 error code on a Jenn-Air oven indicates a secondary ACU (Appliance Control Unit) fault, specifically that the broil relay within the ACU is reading as open. The ACU is the main electronic control board that governs all oven functions, including the broil element circuit. A relay in the open state means the electrical switch inside the control board responsible for sending power to the broil element is not closing as commanded, or is being detected as open during the control's internal self-diagnostics.

This fault is categorized as a secondary ACU fault, meaning the control board itself has identified an internal failure rather than an external wiring or sensor problem. The broil relay is a mechanical or solid-state switching component soldered onto the ACU. When the control attempts to energize the broil circuit and detects that the relay is not functioning correctly, it logs this code and interrupts operation to prevent potential unsafe conditions.

The most common causes include a failed relay on the ACU, loose or unplugged wiring harness connectors at the control board, or a wiring fault between the ACU and the broil element. The first diagnostic step is to disconnect power to the range and carefully inspect all connectors going to the main control board for signs of looseness, corrosion, or unplugged terminals. If all connections are secure, the ACU itself is likely the faulty component requiring replacement.

Source: manufacturer service documentation.

Common causes of F1E5-5

  1. 01

    Failed broil relay on the ACU

    Part replacement

    The broil relay on the main control board has failed internally and is stuck open, preventing the broil circuit from being energized. This is an internal board fault and requires replacing the ACU.

  2. 02

    Loose or disconnected wiring harness connector at the ACU

    Wiring / connection

    A connector at the main control board may have worked loose or become unplugged, causing the board to lose contact with the broil circuit and log a false relay-open fault. Inspect all harness connections to the board with the power off.

  3. 03

    Damaged wiring between the ACU and broil element

    Part replacement

    Wiring in the broil circuit may be burnt, frayed, or broken, causing an open circuit that the ACU interprets as a relay fault. Visually inspect the wiring harness from the control board to the broil element for damage.

  4. 04

    Corroded or burnt connector terminals

    Part replacement

    Heat exposure inside the oven cavity can cause connector terminals at the control board to corrode or sustain heat damage, increasing resistance and causing the relay circuit to read as open. Look for discoloration or residue at the connector pins.

See the test procedure for each cause

Frequently asked questions about F1E5-5

What does F1E5-5 mean on a Jenn-Air oven?
F1E5-5 is a secondary ACU fault code indicating the broil relay on the main control board is reading as open. The ACU is the central electronic control board, and its broil relay is the internal switch that sends power to the broil element. The control detected that this relay is not functioning correctly and shut down the broil circuit. This fault originates inside the control board itself rather than from an external sensor.
Can I fix the F1E5-5 error on my Jenn-Air oven myself?
A knowledgeable DIYer can start by unplugging the range and inspecting all wiring harness connectors at the main control board for loose or disconnected terminals, which is a no-cost first step. If connections are secure and the fault persists after restoring power, the ACU most likely needs to be replaced, which involves disconnecting the wiring harness and swapping in a new board. Working on control boards does require comfort with appliance disassembly and electrical safety precautions.
Is it safe to use my Jenn-Air oven with an F1E5-5 error code?
The broil function will not operate correctly with this fault active, so you should avoid using the broiler until the issue is resolved. Bake functions may still work depending on whether the fault has caused the control to lock out all oven operations. It is best to have the control board inspected before continued use to ensure no wiring damage is present.
Will resetting my Jenn-Air oven clear the F1E5-5 error code?
Disconnecting power to the oven for several minutes may temporarily clear the code, but if the broil relay on the ACU has failed internally, the fault will return when the oven is powered back on or the broil function is activated. A reset is a useful first step to confirm whether the fault is persistent, but it does not repair the underlying hardware problem.
How much does it cost to repair an F1E5-5 error on a Jenn-Air oven?
If the repair only requires reseating a loose wiring connector, the cost is minimal beyond your time. If the ACU needs to be replaced, parts alone typically range from roughly $150 to $400 or more depending on the specific model, with professional labor adding additional cost. Getting a diagnosis from a certified technician before ordering parts is advisable to confirm the ACU is the failed component.

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