What F40 Means
Maytag attributes F40 on electric and induction cooktops to a possible problem with the user interface touchpad, the cooktop power control board, or the associated wiring. Both electronic halves of the cooktop are named, which is why the diagnosis is a test rather than a guess.
Common Causes of F40
- Transient fault cleared by a power reset
- Touchpad harness connector loose
- Touchpad failed
- Power control board failed
- Wiring heat-damaged under the glass
🔧 One Safe Check You Can Try
Reset the cooktop at its breaker for a minute, then restore power and try a single zone on low. If it works normally, the fault was transient. If F40 returns, note whether the touch keys respond at all: a completely dead panel points at the touchpad or its harness, while a panel that responds but produces no heat points at the power control board. That observation genuinely narrows the repair.
⚠ Why You Shouldn't Go Further Than That
- Both named parts are beneath the glass on a high-current circuit, reached only by lifting the cooktop out with the supply isolated.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.