Written by
Maren Coleman Appliance Care EditorPublished October 29, 2026
VERIFIED
Error codeF42
ApplianceCooktop
The board behind F42
Manufacturer help ties F42 to the cooktop’s power control board, or to wiring connected to it. It is listed for electric, radiant and induction models.
Reset, then watch
Take power off the cooktop at its breaker and wait one minute.
Put the power back.
Confirm F42 stays off the display and the cooktop operates.
If the code keeps returning, a technician examines the board and its wiring.
Related codes
F40: also lists the touchpad next to the board and wiring.
F25: concerns the electrical supply feeding the cooktop.
A repeating F42 is a job for Whirlpool cooktop repair in San Francisco. Ring (415) 687-4102, and let us know the model number and that you already did the breaker reset.
Model compatibility: Whirlpool reuses codes across series and model years, so F42 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
F42 indicates a possible problem with the cooktop power control board or its associated wiring.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Whirlpool appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Repair for the Whirlpool WCI55US0JS 30-inch induction cooktop in San Francisco: zones that stay cold, pan detection problems, overheat shutdowns and dead…
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
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