There is no information in the tech sheet that covers a â€œblinking Normal LEDâ€. If any key or keys is blinking rapidly that is indicative of a short or stuck key in the console.
About 95% of the time something like this will require replacing the console/touchpad assembly. The only way to confirm the diagnosis is by testing the touchpad control with a meter or, replace it to see if that fixes the problem. If you decide to test the touchpad with a meter, I have included the testing information in the image provided below.
I have included a link to purchase the console/touchpad assembly.
Sears Parts Direct
On the page this link brings up, I have included this to help you pick your color.
The first one 8559874 is black.
The second 8558947 is white.
The third 8558948 is bisque.