Remove the lid and set aside. Press Brown/Saute and allow to heat up for a couple minutes. Brown the ground beef. Press Start/Stop and drain any fat.
1 pound ground beef
Add all other ingredients to the pot. Don't drain the canned ingredients. Cover and lock lid. Close the steam release valve.
1/2 cup diced onion, 3 tsp ranch dressing mix, 2 tsp taco seasoning, 1/2 tsp salt, 1/2 tsp pepper, 1 can (15 oz) corn, 1 can (15 oz) diced tomatoes, 1 can (10 oz) 10 oz Rotel (diced tomatoes with green chiles), 1 can (15 oz) pinto beans, 1 cup Water
Press Soup and set to 10 minutes. Press Start/Stop.
After cooking cycle is done, allow a natural pressure release for at least 10 minutes. Carefully release any remaining steam by opening the steam release valve. Do it in short, intermittent bursts at first to make sure you don't splatter soup all over your kitchen.