Ranma ½ (1989)

S1E35 Kuno's House of Gadgets! Guests Check in, But They Don't Check Out

Ranma has uncovered the first of three enchanted urns required to call forth the spring. But to find the next one, he must venture into the depths of the Kuno mansion, a place riddled with cunning traps, devious surprises, and unpredictable hot and cold water.