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Error code reference

Electrolux Oven Error Code F26

Missing lower oven select signal on the lower oven convection fan and oven lights control board (double wall…

Electrolux codesElectrolux oven codes

Missing lower oven select signal on the lower oven convection fan and oven lights control board (double wall oven only).

First step from the service manual

The lower oven conv. fan and oven lights board is supposed to receive 5V on pin 5 of connector P1. This voltage originates from the display board (connector P2 pin 4), check wiring. If problem persists, replace the conv. fan and oven lights control board.

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

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What F26 means on a Electrolux oven

The F26 error code on an Electrolux double wall oven indicates that the lower oven convection fan and oven lights control board is not receiving the expected select signal from the display board. Specifically, the lower oven conv. fan and oven lights control board should see 5 volts DC on pin 5 of its P1 connector. This 5V signal originates at the display board, which outputs it from pin 4 of connector P2. When this signal is absent or falls below the expected threshold, the control system flags F26 to alert that communication or power routing between the two boards has broken down.

This fault is exclusive to double wall oven configurations, where a separate control board manages the lower oven's convection fan and interior lighting independently from the upper oven. The display board acts as the signal source, and the wiring harness between the two boards is the critical link. A failure anywhere along that path, including loose connector pins, damaged wire insulation, or corroded terminals at either P1 pin 5 or P2 pin 4, can interrupt the 5V signal and trigger the error.

Diagnosis begins with verifying the presence of 5V at pin 5 of the P1 connector on the lower oven conv. fan and oven lights board while the unit is powered. If voltage is absent there, the next step is checking for proper output at pin 4 of the P2 connector on the display board. If the display board is outputting the correct voltage but it is not arriving at the destination board, the wiring harness is the likely culprit. If both the wiring and connectors check out correctly and the fault persists, replacement of the lower oven convection fan and oven lights control board is the recommended resolution.

Source: manufacturer service documentation.

Common causes of F26

  1. 01

    Loose or disconnected wiring harness connector

    Wiring / connection

    The connector at P1 pin 5 on the lower oven board or at P2 pin 4 on the display board may have worked loose over time from heat cycling. Inspect both connectors for secure seating and signs of backing out.

  2. 02

    Damaged or broken wire in the harness

    Wiring / connection

    The wire carrying the 5V select signal between the display board and the lower oven conv. fan and oven lights board may be broken, chafed, or shorted. Trace the harness between P2 pin 4 and P1 pin 5 and check for continuity and insulation damage.

  3. 03

    Corroded or burnt connector pins

    Wiring / connection

    Heat exposure over time can cause oxidation or carbon buildup on the terminal pins at either connector location, increasing resistance and dropping the 5V signal below usable levels. Inspect pin 5 of P1 and pin 4 of P2 closely for discoloration or corrosion.

  4. 04

    Failed lower oven convection fan and oven lights control board

    Part replacement

    If wiring and connectors are confirmed good and the 5V signal is present at the board's P1 pin 5 but the fault persists, the lower oven conv. fan and oven lights control board itself has likely failed internally and requires replacement.

  5. 05

    Failed display board

    Part replacement

    If the display board is not outputting 5V at P2 pin 4 despite good wiring, the display board may have a failed output circuit and could require replacement.

See the test procedure for each cause

Frequently asked questions about F26

What does F26 mean on a Electrolux oven?
F26 means the lower oven convection fan and oven lights control board is not receiving the required 5V select signal from the display board. This code only appears on Electrolux double wall oven models, where the lower oven has its own dedicated control board. The fault points to a problem in the signal path between the display board's P2 connector and the lower oven board's P1 connector, involving the wiring, connectors, or one of the boards themselves.
Can I fix an F26 error on my Electrolux double wall oven myself?
A knowledgeable DIYer can begin diagnosis by inspecting the wiring harness and connectors between the display board and the lower oven conv. fan and oven lights board. Checking for loose connectors at P1 pin 5 and P2 pin 4 requires no special tools beyond basic hand tools and a multimeter. However, if a control board replacement is needed, comfort working with oven electronics and proper safety precautions are essential, and some owners prefer to leave board replacement to a qualified technician.
Is it safe to use my Electrolux oven while it displays F26?
F26 indicates a control signal failure affecting the lower oven's convection fan and lighting board, which means those functions may not operate correctly in the lower oven. Continuing to use the oven in this condition is not recommended, as the convection fan may not run properly during baking cycles, leading to uneven heating or potential overheating. It is best to have the fault diagnosed and repaired before relying on the lower oven for cooking.
Will resetting my Electrolux oven clear the F26 error?
Cycling power to the oven, either at the breaker or by unplugging the unit, may temporarily clear the F26 code, but it will return if the underlying wiring or board fault is not corrected. The error is triggered by an actual missing signal condition, not a random glitch, so a reset alone is not a fix. Proper diagnosis of the 5V signal path is required to resolve it permanently.
How much does it cost to repair an F26 error on an Electrolux oven?
If the issue is simply a loose connector or minor wiring repair, the cost can be minimal, primarily covering a service call fee ranging from roughly 75 to 150 dollars. If the lower oven convection fan and oven lights control board requires replacement, parts alone typically range from 100 to 300 dollars depending on the specific model, with additional labor costs if a technician performs the work. Display board replacement, if that board is determined to be at fault, can fall in a similar or higher parts cost range.

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