What F40 means on your Frigidaire cooktop (frigidaire f40 error)
A frigidaire f40 error on your Frigidaire induction cooktop indicates the control lock-out is engaged, and F41 is part of the same lock-out family. This matches the range cooktop lock-out and is normally a control-lock or child-lock state rather than a failure — it clears once the lock is released.
Symptoms
Read the list through and set it beside how your Frigidaire cooktop is behaving, because faults with very different fixes can look alike at first glance. The cooktop may reveal a single symptom or a group of them, appearing gradually or the instant after a power blip, a heavy load, or new installation work.
- “F40” or “F41” shows and the cooktop will not respond
- A lock or key icon is lit
- The fault followed pressing or holding the lock pad
- All zones are temporarily disabled
Common causes
The same symptoms on a Frigidaire cooktop can point to several possible faults, so the causes here begin with the most common. Ruling each one out in turn shows whether your cooktop has a quick fix or a problem that needs proper diagnosis and the right parts.
- Control lock active — the lock-out feature was switched on, sometimes by accident
- Held lock pad — the lock button was pressed long enough to engage
- Sticking lock pad — a worn pad re-engages the lock-out
- Control glitch — a brief upset left the lock state set
Troubleshooting steps you can try
Handle these checks on your Frigidaire cooktop in order, easiest first, before you decide you need help. Break off at once if a step on the cooktop exposes you to live wiring, gas, a hot oven, standing water, or a sealed system, and leave it to a professional.
- Find the lock pad and hold it for the few seconds the model needs to unlock.
- Confirm the lock or key icon turns off and the controls respond.
- If it will not clear, switch the cooktop off at the breaker for five minutes, then restore power.
- If “F40” keeps returning on its own, the lock pad or keypad should be checked.
Parts a technician may replace
Depending on where the fault is traced, work on your Frigidaire cooktop may involve inspecting, testing, or replacing the control lock function, touch keypad, and induction control board. Each component for the cooktop is matched from the model and serial number, and genuine OEM parts are sourced from trusted suppliers rather than generic substitutes, so the performance, safety, and long working life of the appliance are safeguarded. Confirming the failed part before it is ordered keeps the repair on your cooktop to the fault at hand.
When to call a technician
F40 is rarely a repair — but if the lock-out re-engages by itself, a technician should check the lock pad and keypad for a stuck contact. This condition is rated Low severity on a cooktop, so there is no emergency — but if F40 keeps coming back after the checks above, a technician should confirm the cause on your cooktop before any part is replaced. This is independent repair work — we are not affiliated with the manufacturer, the technicians who service your cooktop are experienced and skilled, the parts fitted to the cooktop are genuine OEM items from trusted parts suppliers, and a 30-day labor warranty covers our workmanship. Have the model and serial number of your Frigidaire cooktop ready when you book so the right part is matched before the visit and the F40 condition cleared in as few trips as possible.
Related help and Frigidaire resources
If the F40 condition keeps returning after these checks, book Frigidaire cooktop repair, browse our cooktop error-code guides and step-by-step repair guides, or schedule service in your area on our locations page. See also the related L control-lock indicator. If you need the manufacturer specifications for your cooktop or want to confirm the model, they are at frigidaire.com.
