--- title: "JennAir E03: the keypad reported trouble to the main board" description: "What E03 means on JennAir E03: the keypad reported trouble to the main boards, what to check before booking, and when it is not a failure at all." url: "https://microwaverepair.center/error-codes/jennair-e03/" --- # JennAir E03: the keypad reported trouble to the main board Inside a JennAir hood combination the touch keypad and the main board talk over a short cable. ## What E03 actually means. Inside a JennAir hood combination the touch keypad and the main board talk over a short cable. E03 means the keypad side flagged a problem, so the keypad membrane or that cable is where the repair usually lands. JennAir microwave display What to do when E03 shows on the microwave ### Kind of code Control board and touchpad The electronics that read the keys and run the cycle have flagged a problem with themselves: a key that the control sees as held down for too long, a membrane keypad worn through or swollen by steam, a lost link between the keypad and the board, or a board that failed its own check after a surge. A breaker reset now and then clears a glitch; a stuck key or a code that comes straight back points to the keypad or the board. ### 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 JennAir JennAir microwaves looked at in place, with the breaker, the door switches and a one-minute heat test covered before any part is priced. ### Source JennAir Product Help, over-the-range microwave: E03 From JennAir's help pages for its microwave hood combinations (Euro-style, including the convection models). The code set varies with the control generation, so a code missing from your model's manual may not apply to it. ## Before you book, in this order. Each step comes from JennAir's own guidance for E03 on its microwaves. Follow it to the end: the last card says whether this is a visit. 01 Turn the microwave off at the circuit breaker, count a full minute, then restore power. 02 Give it a minute on standby; a code that does not reappear was likely a one-time glitch, so run a short cycle to confirm. 03 Keep steam and splashes off the panel and dry it with a soft cloth. 04 If E03 returns, book a visit to have the keypad and its connection tested. ### 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 E03 does not concern heating parts or the door. Keys that ignore presses with LOC or a padlock showing are the lock, not E03. ## What you may notice with it. The microwave problems E03 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 Touchpad Ignores Key Presses**](https://microwaverepair.center/problems/microwave-touchpad-not-responding/) Problem ### What a Microwave Error Code Is Telling You 7 causes, cheapest first Where E03 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/) ## JennAir microwaves. JennAir microwaves looked at in place, with the breaker, the door switches and a one-minute heat test covered before any part is priced. [JennAir microwave repair](https://microwaverepair.center/brands/jennair/) More JennAir codes [LOC](https://microwaverepair.center/error-codes/jennair-loc/) [DOOR](https://microwaverepair.center/error-codes/jennair-door/) [PF](https://microwaverepair.center/error-codes/jennair-pf/) [Demo](https://microwaverepair.center/error-codes/jennair-demo/) [E11](https://microwaverepair.center/error-codes/jennair-e11/) [E21](https://microwaverepair.center/error-codes/jennair-e21/) [F3T3](https://microwaverepair.center/error-codes/jennair-f3t3/) [F4E1](https://microwaverepair.center/error-codes/jennair-f4e1/) [F4E4](https://microwaverepair.center/error-codes/jennair-f4e4/) [F6E0](https://microwaverepair.center/error-codes/jennair-f6e0/) [F7E9](https://microwaverepair.center/error-codes/jennair-f7e9/) [F9Q1](https://microwaverepair.center/error-codes/jennair-f9q1/) [All 21 JennAir codes](https://microwaverepair.center/error-codes/#codes-jennair) Control board and touchpad on other makes [Bosch E-xx](https://microwaverepair.center/error-codes/bosch-e-xx/) [Café KEYPAD SHORTED](https://microwaverepair.center/error-codes/cafe-keypad-shorted/) [Dacor C-F0](https://microwaverepair.center/error-codes/dacor-c-f0/) [Fisher & Paykel F + number](https://microwaverepair.center/error-codes/fisher-and-paykel-f-number/) [Gaggenau Exx](https://microwaverepair.center/error-codes/gaggenau-exx/) [GE Profile F3](https://microwaverepair.center/error-codes/ge-profile-f3/) [KitchenAid F2](https://microwaverepair.center/error-codes/kitchenaid-f2/) [Monogram F3](https://microwaverepair.center/error-codes/monogram-f3/) [All 23 codes of this kind](https://microwaverepair.center/error-codes/#family-board) JennAir 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. JennAir 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. JennAir builds this ### Microwave drawer A microwave built under a counter or into a kitchen island that opens like a drawer at the touch of a key, with a motor and gears sliding its cavity out toward you. ## In JennAir's own words > There may be a problem with the Keypad (User Interface) or the associated wiring. [JennAir Product Help, over-the-range microwave: E03](https://producthelp.jennair.com/Cooking/Microwaves/Over-the-Range_Microwave/Error_Code/Starts_with_an_E/E03_-_Error_Code_-_Over-the-Range_Microwave) [JennAir Product Help, over-the-range microwave: E03](https://producthelp.jennair.com/Cooking/Microwaves/Over-the-Range_Microwave/Error_Code/Starts_with_an_E/E03_-_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. From JennAir's help pages for its microwave hood combinations (Euro-style, including the convection models). The code set varies with the control generation, so a code missing from your model's manual may not apply to it. ## JennAir E03 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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Turn the microwave off at the circuit breaker, count a full minute, then restore power. If it comes back, it needs a visit. ### What part usually fixes E03 on a JennAir? The keypad assembly or its cable to the board. The technician checks the connection first, since a reseated cable costs far less than a new part. ### Can a JennAir with E03 still heat food? Usually not, because the control cannot trust the keys. Leave it off until the code clears or is repaired. ### Why did E03 appear after cleaning the JennAir panel? Liquid that seeps under the membrane can short a key. Let it dry fully, reset power, and see if the code stays away. --- **[Read on the site: JennAir E03: the keypad reported trouble to the main board](https://microwaverepair.center/error-codes/jennair-e03/)** **[Book a visit with MicrowaveRepair.center](https://microwaverepair.center/schedule/)**