It is funny when that happens!They put in our new pool/spa lighting today. I was taking a nap while they put it in. When I awoke, I wanted to try it out. To go to the different settings (it does various colors, and patterns), one must flip the on/off switch a certain number of times. There is a chart with a key to the different settings, and the number of times the switch is to be flipped for the desired effect. Our pool light switch was already one of the wall switches, by the slider going out to the patio.
As I began flipping the switch, it didn't want to work right. Dh had the audacity to ask if I was flipping the switch right. Really? It's a light switch. Of course, he had to come to show me how it's done. It didn't work right for him either. Hahaha. It seems the wall switch needed replacing. We have several new ones in the garage, since we've already had to replace a few of them. Now everything is working just fine. I have to say, I really do like it.
It is good to have spare parts.