KitchenAid Induction Cooktop Code F42: the power control board or its wiring

What F42 means

On KitchenAid induction cooktops like the KICU569XSS, F42 signals a possible problem with the Cooktop Power Control Board or the wiring connected to it. That board feeds the induction coils, so when it falters the cooktop may refuse to heat one or more zones and keep the code on the display. The board itself handles the power that makes the heat, so a problem there usually means one or more zones will not run at all, even though the touch keys on the glass still light up and respond normally.

Common causes of F42

The power control board failing
Wiring to the board that is damaged
A connector that has lost contact
Heat stress on the board

✓ One safe check you can try

1. Turn off all zones and let the cooktop cool. 2. Cycle the cooktop breaker off for a minute and back on. 3. Try one zone with a magnetic pan. 4. If F42 reappears, leave it off and call us.

! Why to stop there

This board handles the high-power side of the cooktop.
Opening the cooktop to test it is dangerous without training.
A written price comes first, and our work has a 30-day warranty.

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.

→Same appliance

Other Cooktop codes

FC LFKitchenAid Induction Cooktop Code FC LF: left front zone, its coil or its wiring FC LRKitchenAid Induction Cooktop Code FC LR: a left-side zone that will not heat FC RFKitchenAid Smoothtop Cooktop Code FC RF: right front area, element or wiring FC RRKitchenAid Induction Cooktop Code FC RR: the right rear zone does not respond H - Residual HeatKitchenAid Induction Cooktop H: Residual Heat Indicator Indicator or Display FlashingKitchenAid Induction Cooktop Flashing Display: Keys Held Down Indicator or Hot Light OnKitchenAid Smoothtop Cooktop Hot Light On: Control Still On or Element Hot LockKitchenAid Induction Cooktop Message "Lock": Control Lock Is Active

F42F42 questions

What does the Cooktop Power Control Board do?

It converts and routes the power that drives each induction coil. If it or its wiring has a problem, zones cannot be powered correctly. The board is the part that turns household power into the high-frequency current each induction coil needs, so any problem with it shows up as dead or unreliable zones.

Why is F42 listed next to F43?

They share the same description: the power control board or its wiring. The numbers identify different internal checks, which help us narrow the search. Their wording is identical, so the numbers are mostly clues about which internal check tripped. For you the steps are the same: reset once, then call us if the code returns after the reset.

Can heat from cooking damage the board?

Yes, repeated overheating shortens board life. If your cooktop vents were blocked, mention it. It helps us decide if the cause is wear or restricted airflow.