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Error code reference

AEG Washer Error Code C3

Aqua Control fault-float switch (f16) has detected water in the base of the machine, triggering the drain pump directly and halting the program.

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What the C3 error code actually means

Your AEG washer has detected water leaking inside the bottom of the machine, which triggered a built-in protection system to stop the wash and run the drain pump. The machine is protecting your home from a potential flood. You need to find where the water is coming from, let the inside dry out, and then press Start/Pause to get it running again.

Diagnostic procedure

The full C3 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check for leaks; once the float switch resets, press Start/Pause to resume the program.
More steps, wiring diagram references, and verified part numbers
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Most common causes of C3

Ranked by how often they cause this code
  1. 1Leaking door seal or gasket
  2. 2Loose or damaged internal hose connection
  3. 3Drain pump housing leak
  4. 4Detergent drawer or dispenser housing overflow
  5. 5Faulty float switch (F16)

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Questions people ask about C3

What does C3 mean on a AEG washer?
C3 on an AEG washer means the Aqua Control flood protection system has been triggered. The float switch F16, located in the base tray of the machine, has detected water collecting at the bottom of the appliance. In response, the washer automatically activates the drain pump and stops the wash program to prevent further water damage. The root cause is a leak somewhere inside the machine that allowed water to reach the base tray.
Is it safe to keep using my AEG washer when C3 is showing?
You should not continue using the washer until the cause of the leak has been found and fixed. The C3 code exists specifically to stop operation and protect your home from water damage. Running the machine before addressing the leak could result in a larger flood, electrical hazards, or further damage to internal components.
How much does it cost to repair an AEG washer showing C3?
Repair costs vary depending on the source of the leak. A door seal replacement typically falls in the range of $50 to $150 including parts and labor. Internal hose repairs or pump replacements can range from $100 to $250 or more depending on the specific component and labor rates in your area. If the float switch F16 itself is the faulty component and requires replacement, that is generally a lower-cost repair, often in the $60 to $120 range.
How do I fix the C3 error on my AEG washer?
Start by unplugging the machine and inspecting it for the source of the leak. Common locations include the door seal, internal hoses, and the drain pump area. Once you have identified and repaired the leak, allow the base tray to dry completely so the float switch F16 can drop back to its resting position. After the float resets, plug the machine back in and press Start/Pause to resume your program.
Will resetting my AEG washer clear the C3 error?
A simple power reset will not permanently clear C3 if water remains in the base tray, because the float switch F16 will still be in the triggered position. The error will only clear once the base tray is dry and the float drops back down. If the underlying leak is not repaired, the fault will return during the next wash cycle.

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