Customer Questions and Answers for Oven Control Board And Clock by Whirlpool

I'm sorry the F7 came back, especially after replacing the control panel. The fact that the new panel had a "5" button that never worked is actually a pretty important clue. On your JennAir WW27430P, the F7 error usually means the control is seeing a stuck or shorted keypad, although in some cases the electronic control board (ERC/clock) can also be the cause. Based on what you've described, my first suspicion is that the replacement control panel itself is defective. A brand-new panel should have every button working properly. Since the "5" key never worked and now the F7 has returned, it sounds like the keypad may have been faulty from the start. Before replacing anything else, I'd recommend trying a couple of quick checks: Turn the breaker off for about 5 minutes, then restore power and see if the F7 returns. Disconnect power again and remove the control panel. Unplug the keypad ribbon cable from the control board, inspect it for any bent contacts, corrosion, or debris, then reconnect it securely. A loose connection can sometimes cause keypad errors. If everything looks good and the F7 still returns, I would contact the place you purchased the replacement panel from to see if it's still under warranty. Since one of the keys never worked, there's a good chance the replacement panel itself is the problem. One question that will help narrow it down a little further: When the F7 appears now, do any of the buttons still respond, or is the entire keypad unresponsive? Let me know what you find, and I'll be happy to help you determine whether it's the replacement keypad or if the electronic control board is the next thing to check.