Range error code F12

What F12 means on this make

The control cannot identify its own processor — an internal check that failed at power-up. The maker documents it on both the electric ranges and the electric cooktops, which is the useful part: the same control platform sits under a freestanding range and a cooktop of the same generation, so the badge on the front says nothing about which board is behind it. Frigidaire, Gallery and Professional are trim on that one platform. Nothing but a power cycle is published for it.

Where this appears, and why not to clear it

On the appliance's own display, as a short single code — a letter and a number, or two letters. Nothing alternates and nothing arrives in halves on this make, so what the panel shows is the whole of it. Photograph it before you cut the power. This maker's own answer to most of these is thirty seconds at the breaker, and that is worth following once — but a display that has been cleared has taken the evidence with it, and there is no way to ask the machine for it again.

Which machines this one applies to

Electric ranges and electric cooktops. The same number on a different appliance of this make is a different page and often a different repair, which is why this archive is organized by appliance rather than by number. This maker documents codes on four kinds of machine — the top-load washer, the dishwasher, the electric range and cooktop, and the refrigerator — and publishes none at all for its dryers, its freezers, its wine cabinets or its ice machines. Those appliances have symptom pages here and no code pages, which is the honest answer rather than borrowing a table from the machine next door.

What to do about it

1. Write the code down exactly as the panel shows it, before you cut power. The display forgets and the condition does not.
2. Cut power at the breaker for thirty seconds and restore it. This is the maker's own instruction, and it proves one thing: a code that clears and stays clear was a condition rather than a failure.
3. Note what the range was doing when it appeared — preheating, mid-bake, self-cleaning, or sitting idle. On a control problem that timing is worth more to a technician than the number.
4. If it returns, stop resetting it. Three power cycles tell you what one does, and a code that keeps coming back has a part behind it.

Where this goes next

The job this usually becomes is diagnostic visit, and that page carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes, reminders and settings rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call (305) 615-5496 and describe what the panel is doing before booking anything.