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Error code reference

Electrolux Oven Error Code ACUM

Communication error with electronic board between ACU and UI

Electrolux codesElectrolux oven codes
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What the ACUM error code actually means

Your oven's main control board and the display panel have lost the ability to communicate with each other, which is what the ACUM code is telling you. This could be caused by a loose or damaged wire connecting those two parts, or by a failure inside the main control board itself. The oven will not operate normally until this connection is restored or the faulty component is replaced.

Diagnostic procedure

The full ACUM procedure

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1
First diagnostic step
Restart the oven. Check communication cable integrity and check continuity on 8-poles connector between UI & ACU.
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Most common causes of ACUM

Ranked by how often they cause this code
  1. 1Loose or disconnected communication cable
  2. 2Damaged communication cable conductors
  3. 3Corroded or burnt connector pins
  4. 4ACU board failure
  5. 5Transient power or voltage disturbance

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Questions people ask about ACUM

What does ACUM mean on a Electrolux oven?
ACUM indicates a communication error between the Appliance Control Unit (ACU) and the User Interface (UI) board. The two boards exchange data through a dedicated cable terminated with an 8-pole connector, and a failure in that cable or in the ACU itself will trigger this code. The oven cannot operate normally until communication is restored.
How do I fix the ACUM error on my Electrolux oven?
Start by restarting the oven to rule out a one-time glitch. If the code returns, inspect the communication cable and 8-pole connector between the UI and ACU for loose connections, damaged wires, or corroded pins, and test continuity across all eight poles. If the cable checks out, the ACU board itself likely needs to be replaced.
How much does it cost to repair an ACUM error on an Electrolux oven?
Repair costs depend on the root cause. If only the communication cable or connector needs replacement, parts costs are generally in the range of $15 to $60. If the ACU board itself has failed, board replacement parts typically range from $100 to $300 or more depending on the model, with additional labor costs if a technician performs the repair.
Will resetting my Electrolux oven clear the ACUM error?
A power cycle reset is the recommended first step and can clear the ACUM code if the cause was a transient communication glitch. However, if the code returns after restarting, there is a physical hardware fault such as a damaged cable or connector that needs to be inspected and repaired. A reset alone will not fix an underlying wiring or board problem.
Is it safe to use my Electrolux oven while the ACUM error is displayed?
It is not advisable to continue using the oven while the ACUM error is active. Because the ACU and UI have lost communication, the control system cannot reliably monitor or respond to commands, which means temperature regulation and safety functions may not operate correctly. The oven should be diagnosed and repaired before further use.

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