Wolf Early Induction Code FD: Lock LED Error, Replace the Board

What FD means

Early Wolf induction cooktops like the CT30I/S and CT36I/S show FD when the control detects a Lock LED error. The control lock indicator is not working as the board expects, and the official remedy is a replacement control board. Owners see FD on the display and may find the lock feature behaving unpredictably, though the cooktop is not reporting any pan or heat problem.

Common causes of FD

Control board error in the Lock LED circuit
Touch panel connection to the board loose or damaged
Moisture or a surge that affected the control board

✓ One safe check you can try

1. Switch off all burners and confirm the control lock is off. 2. Wipe the touch area with a dry cloth, since damp controls can send false signals. 3. Turn the cooktop breaker off for a minute, then on. 4. If FD returns, leave the lock alone and call us. Please do not remove the glass or the control.

! Why to stop there

FD ties to the control board, which sits behind live circuits under the surface.
The lock light and the board share wiring, so a wrong guess can mean paying for the wrong part.
Workmanship is covered for 30 days after the repair.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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FDFD questions

Why does my cooktop show FD?

On early Wolf induction models it means a Lock LED error. The control cannot manage the lock indicator correctly, and a new control board is the stated remedy.

Does FD mean the cooktop is unsafe?

It does not describe a heat or gas hazard. It is a control indicator error. Still, we advise a prompt service call because a board that misreads its own lights may drift into other errors.

Can the lock be cleared by holding the pad?

Holding the lock pad is the normal way to toggle the lock, but it does not repair FD. If the code stays after a breaker reset, the board needs attention.