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Error code reference

Electrolux Dishwasher Error Code i6C

Heat exchanger efficiency low

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What the i6C error code actually means

Your Electrolux dishwasher is telling you that the heating element is not warming the water as efficiently as it should be. This is most likely caused by a buildup of limescale or mineral deposits on the heater, which is common in areas with hard water. The dishwasher will keep running, but you should descale the heater to restore normal performance and prevent further issues.

Diagnostic procedure

The full i6C procedure

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1
First diagnostic step
Descale the heater element; do NOT replace the heater unit. Cycle continues.
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Most common causes of i6C

Ranked by how often they cause this code
  1. 1Limescale buildup on heater element
  2. 2Infrequent use of dishwasher salt or rinse aid
  3. 3Low incoming water temperature
  4. 4Partially failing heater element

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Questions people ask about i6C

What does i6C mean on a Electrolux dishwasher?
The i6C code means the dishwasher's heat exchanger efficiency is low, indicating poor heat transfer between the heater element and the water. The most common cause is limescale buildup on the heater element. The dishwasher continues to run when this code appears, so it does not stop your wash cycle. Descaling the heater element is the recommended first step, not replacing the heater unit.
Is it safe to keep using my Electrolux dishwasher when the i6C code is showing?
Yes, the i6C code does not stop the wash cycle, and the dishwasher remains operational. However, you should address the issue promptly because reduced heating efficiency means dishes may not be washed or sanitized at the correct temperature. Continued operation without descaling can worsen the buildup and eventually lead to more serious heater problems.
Will resetting my Electrolux dishwasher clear the i6C error code?
A reset may temporarily clear the code from the display, but it will not resolve the underlying cause. If the heater element still has scale buildup, the code will return once the dishwasher runs and the control system detects low heat transfer efficiency again. The correct approach is to descale the heater element first, then observe whether the code reappears during subsequent cycles.
How do I fix the i6C error on my Electrolux dishwasher?
The primary fix is to descale the heater element, as mineral deposits are the most frequent cause of this code. You can run a descaling cycle using a dishwasher-safe descaler product or citric acid. Do not replace the heater unit as a first response. If the code returns after descaling, further diagnostic work on the heater element or water supply may be needed.
How much does it cost to fix an i6C error on an Electrolux dishwasher?
If the issue is limescale buildup, the cost is minimal, typically in the range of a few dollars for a descaling product. If the heater element has deteriorated and needs replacement after descaling fails to resolve the code, repair costs including parts and labor can range from around $100 to $300 depending on your location and service provider.

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