--- title: "KitchenAid F4E1: the thermistor inside the cooking cavity" description: "What F4E1 means on KitchenAid F4E1: the thermistor inside the cooking cavitys, what to check before booking, and when it is not a failure at all." url: "https://microwaverepair.center/error-codes/kitchenaid-f4e1/" --- # KitchenAid F4E1: the thermistor inside the cooking cavity When a KitchenAid hood combination bakes or browns, a thermistor behind the cavity wall reports the temperature so the element can cycle. ## What F4E1 actually means. When a KitchenAid hood combination bakes or browns, a thermistor behind the cavity wall reports the temperature so the element can cycle. F4E1 means that report has become unreliable, from the thermistor or its wiring, and the control stops the temperature-based modes. KitchenAid microwave display · also shown as F4 E1 What to do when F4E1 shows on the microwave ### Kind of code Sensors and temperature The control has stopped trusting what one of its sensors reports: the cook or humidity sensor that ends a sensor reheat when steam rises, or a thermal cutout that trips when the cavity or the magnetron runs too hot. A cutout that opens stops the microwave mid-cycle and often recovers once it cools; one that keeps tripping, or a sensor program that shuts off at once every time, needs the sensor, its wiring or the airflow behind it checked. ### Usually leads to Microwave control board and touchpad repair Tracing a dead display, keys that do not answer or a code that keeps returning to the keypad, the ribbon, the relays or the main board, and replacing only the part that failed. ### Shows up as What a Microwave Error Code Is Telling You A microwave error code may be a letter and a number on the display, a lock or demo word, a row of dashes, or a beep with a blinking clock, and it can show while the microwave still heats or block every key until it is cleared. ### Make KitchenAid KitchenAid microwave problems sorted out on site, from a turntable that stands still to a panel that ignores every press. ### Source KitchenAid Product Help, over-the-range microwave: F4E1 Listed on KitchenAid's help pages for over-the-range microwaves; the lettered F-codes belong to the newer hood controls, and the exact code set depends on the model generation. ## Before you book, in this order. Each step comes from KitchenAid's own guidance for F4E1 on its microwaves. Follow it to the end: the last card says whether this is a visit. 01 Switch the microwave off at the breaker for one full minute, then switch it back on. 02 Leave it idle for a minute and watch the display; if the code does not return, run a short test cycle. 03 Look inside for a rack or tray that has shifted against the cavity wall, but leave every panel in place. 04 Book a visit if F4E1 returns. ### Still there? It usually turns into [microwave control board and touchpad repair](https://microwaverepair.center/services/microwave-control-board-and-touchpad-repair/). Book with the code and the model number. ### What not to do F4E1 is a measuring problem, not proof of overheating. Microwave power itself does not rely on this thermistor. ## What you may notice with it. The microwave problems F4E1 tends to arrive with. Answer these at the microwave before anyone is booked. [All problems](https://microwaverepair.center/problems/) Before you call ### [What a Microwave Error Code Is Telling You](https://microwaverepair.center/problems/microwave-error-code/) [All 7 causes, cheapest first](https://microwaverepair.center/problems/microwave-error-code/) It also comes with - [**Microwave Runs but Food Stays Cold**](https://microwaverepair.center/problems/microwave-not-heating/) - [**Microwave Shuts Off Before the Timer Ends**](https://microwaverepair.center/problems/microwave-stops-mid-cycle/) Problem ### What a Microwave Error Code Is Telling You 7 causes, cheapest first Where F4E1 usually leads ## Microwave control board and touchpad repair. **Control board, keypad membrane or display · moderate to highest.** Book a visit [What the job involves](https://microwaverepair.center/services/microwave-control-board-and-touchpad-repair/) ## KitchenAid microwaves. KitchenAid microwave problems sorted out on site, from a turntable that stands still to a panel that ignores every press. [KitchenAid microwave repair](https://microwaverepair.center/brands/kitchenaid/) More KitchenAid codes [LOC](https://microwaverepair.center/error-codes/kitchenaid-loc/) [DOOR](https://microwaverepair.center/error-codes/kitchenaid-door/) [PF](https://microwaverepair.center/error-codes/kitchenaid-pf/) [Demo](https://microwaverepair.center/error-codes/kitchenaid-demo/) [Change the Charcoal Filter](https://microwaverepair.center/error-codes/kitchenaid-change-charcoal-filter/) [F2](https://microwaverepair.center/error-codes/kitchenaid-f2/) [SE](https://microwaverepair.center/error-codes/kitchenaid-se/) [F2H1](https://microwaverepair.center/error-codes/kitchenaid-f2h1/) [F3T4](https://microwaverepair.center/error-codes/kitchenaid-f3t4/) [F3H1](https://microwaverepair.center/error-codes/kitchenaid-f3h1/) [F7E9](https://microwaverepair.center/error-codes/kitchenaid-f7e9/) [E23](https://microwaverepair.center/error-codes/kitchenaid-e23/) [All 22 KitchenAid codes](https://microwaverepair.center/error-codes/#codes-kitchenaid) Sensors and temperature on other makes [Bertazzoni ERROR](https://microwaverepair.center/error-codes/bertazzoni-error/) [Bosch ERROR](https://microwaverepair.center/error-codes/bosch-error/) [Café HOT](https://microwaverepair.center/error-codes/cafe-hot/) [Dacor C-10](https://microwaverepair.center/error-codes/dacor-c-10/) [Fisher & Paykel A1](https://microwaverepair.center/error-codes/fisher-and-paykel-a1/) [Fulgor Milano ERROR](https://microwaverepair.center/error-codes/fulgor-milano-error/) [GE Profile ERR](https://microwaverepair.center/error-codes/ge-profile-err/) [JennAir E11](https://microwaverepair.center/error-codes/jennair-e11/) [All 39 codes of this kind](https://microwaverepair.center/error-codes/#family-sensor) KitchenAid builds this ### Microwave hood combination The microwave that hangs from the wall cabinets above the burners, heating food in its cavity while its own fan, light and filters handle the steam and grease rising from the pans beneath it. KitchenAid builds this ### Built-in microwave A microwave set into a tall cabinet or a wall of cabinetry at eye level, either a countertop body wrapped in a trim kit or a true built-in model, including speed and convection microwaves that brown as well as heat. KitchenAid builds this ### Countertop microwave A microwave that stands on the counter or a shelf and plugs into an outlet beside it, from a compact model for a dorm to a large inverter or convection unit in a busy family kitchen. ## In KitchenAid's own words > There may be a problem with the Cavity Temperature Thermistor or the associated wiring. [KitchenAid Product Help, over-the-range microwave: F4E1](https://producthelp.kitchenaid.com/Cooking/Microwaves/Over-the-Range_Microwave/Error_Code/Starts_with_F/Starts_with_F4/F4E1_-_Error_Code_-_Over-the-Range_Microwave) [KitchenAid Product Help, over-the-range microwave: F4E1](https://producthelp.kitchenaid.com/Cooking/Microwaves/Over-the-Range_Microwave/Error_Code/Starts_with_F/Starts_with_F4/F4E1_-_Error_Code_-_Over-the-Range_Microwave) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Listed on KitchenAid's help pages for over-the-range microwaves; the lettered F-codes belong to the newer hood controls, and the exact code set depends on the model generation. ## KitchenAid F4E1 microwave repair, where we come out. The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered. 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Switch the microwave off at the breaker for one full minute, then switch it back on. If it comes back, it needs a visit. ### Why did convection stop on my KitchenAid with F4E1? Convection and browning need the cavity reading to hold temperature, and F4E1 says that reading is not usable. ### Is F4E1 on a KitchenAid the same as F3C? Both name the cavity temperature thermistor on different control generations. The repair path is the same. ### Can I reach the KitchenAid cavity sensor myself? No. It is reached from inside the outer case, next to high-voltage parts that stay charged unplugged. --- **[Read on the site: KitchenAid F4E1: the thermistor inside the cooking cavity](https://microwaverepair.center/error-codes/kitchenaid-f4e1/)** **[Book a visit with MicrowaveRepair.center](https://microwaverepair.center/schedule/)**