I have a cordova model leisure bay spa. My lights have started acting up. I have like 4 lights in the hottub. they have 3 buttons where you can turn lights on make them change color and make them rotate between colors. At first all the lights were on and not going off. I can push button hear clicking noise but lights wouldn't go out. I have tried turning off the hot tub and turning back on. now only one light is staying on will not go off and the others will not do anything. What could it be. they were working fine 3 weeks ago.