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Error code reference

Electrolux Oven Error Code CPUA

ACS micro does not communicate

Electrolux codesElectrolux oven codes
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What the CPUA error code actually means

Your Electrolux oven has detected an internal communication failure inside its main control board, which has caused the oven to shut down as a safety measure. A specific chip on the control board has stopped responding, and the oven cannot operate until the control board is replaced. This is not something that can be fixed by resetting the oven or adjusting settings.

Diagnostic procedure

The full CPUA procedure

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First diagnostic step
Replace ACU.
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Most common causes of CPUA

Ranked by how often they cause this code
  1. 1Failed ACS IC on the ACU board
  2. 2ACU board failure
  3. 3Loose or corroded internal board connector
  4. 4Power surge damage to the control board

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Questions people ask about CPUA

What does CPUA mean on a Electrolux oven?
CPUA means the ACS micro, a communication chip on the main Appliance Control Unit, has stopped communicating with the ACU. This is an internal board-level fault that causes the oven to shut down completely. It points to a failure of the ACS IC or the ACU board as a whole. The oven will not operate again until the ACU is replaced.
Is it safe to use my Electrolux oven while it shows the CPUA error?
No. The CPUA error stops the oven from operating as a safety measure, and the oven will not function normally while this fault is active. Do not attempt to bypass the fault or force the oven to run. Leave the unit powered down until the ACU has been replaced.
How much does it cost to fix a CPUA error on an Electrolux oven?
Repair costs typically include the price of the replacement ACU board plus any labor charges if a technician is hired. ACU boards for Electrolux ovens generally range from around $150 to $400 or more depending on the model. With professional labor, total repair costs can range from $250 to $600 or higher. Getting a quote specific to your model before committing to the repair is recommended.
Can I fix the CPUA error myself?
Resolving this error requires replacing the ACU, which involves working inside the oven's control section and handling electrical components. A technician with appliance repair experience can perform this replacement, but it is not a simple reset or filter-cleaning task. If you are comfortable working with appliance electronics and can source the correct ACU, it is a feasible DIY repair.
Will resetting the oven clear the CPUA error?
A power reset will not clear the CPUA error. Because the fault is caused by a hardware failure of the ACS IC or ACU board, the code will return immediately after power is restored. Only replacing the faulty ACU will resolve the fault permanently.

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