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Error code reference

Whirlpool Cooktop Error Code F6E6

Appliance Manager 1 (Copernicus) lost communication contact (WIN bus communication failure).

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What the F6E6 error code actually means

Your Whirlpool cooktop is showing F6E6 because one of the main control boards inside the appliance has lost its ability to communicate with the rest of the system. This is an internal electronics issue, not something caused by how the cooktop is being used. The appliance will need to be inspected and likely repaired by checking or replacing that control board before it will work again.

Diagnostic procedure

The full F6E6 procedure

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1
First diagnostic step
Check the WIN bus communication connector on the Copernicus board. If connection is OK, replace the Copernicus board.
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Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of F6E6

Ranked by how often they cause this code
  1. 1Loose WIN bus connector on the Copernicus board
  2. 2Corroded or damaged connector pins
  3. 3Damaged wiring harness along the WIN bus circuit
  4. 4Failed Copernicus board

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Questions people ask about F6E6

What does F6E6 mean on a Whirlpool cooktop?
F6E6 indicates that the Appliance Manager 1 module, known as the Copernicus board, has lost communication with the WIN bus, which is the internal communication network connecting the cooktop's control components. This failure prevents normal operation and is typically caused by a loose connector, damaged wiring, or a failed Copernicus board. The fault will not clear on its own and requires physical inspection of the board and its connections.
Is it safe to use my Whirlpool cooktop while the F6E6 code is displayed?
It is not recommended to continue using the cooktop while F6E6 is active. A WIN bus communication failure means the control system cannot reliably coordinate between components, which can result in unpredictable behavior or loss of control over heating elements. The cooktop should remain off until the fault is diagnosed and resolved.
How much does it cost to repair a Whirlpool cooktop showing F6E6?
Repair costs vary depending on whether the issue is a simple connector fix or a full board replacement. If the Copernicus board needs to be replaced, parts alone can range from roughly $150 to $350 or more depending on the model, with additional labor costs if a technician is performing the repair. A full professional repair including diagnosis could range from $200 to $500 or higher.
Can I fix the F6E6 error myself on a Whirlpool cooktop?
A knowledgeable DIYer can check and reseat the WIN bus connector on the Copernicus board, which is the first recommended diagnostic step. If the connector is secure and the error persists, replacing the Copernicus board is necessary, which involves working with internal electronics and requires comfort with disassembly and component replacement. If you are not confident working with appliance control boards, a qualified technician is the safer option.
Will resetting my Whirlpool cooktop clear the F6E6 error code?
A power reset by disconnecting the cooktop from its power source for several minutes may temporarily clear the error, but if the underlying issue is a loose connector, damaged wiring, or a failed Copernicus board, the fault will return. A reset is not a fix and should only be used as part of the diagnostic process to confirm whether the fault is persistent.

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