I'm having a problem with the blower that goes to my spa. The problem is, it shuts down every 30 min. I was told this is normal operating procedure but I wanted to check if I could do something about it. It's not broken, I just hit the button again and it starts up again. It's just annoying when i'm enjoying the spa with my friends enjoying the night and boom, the blower shuts off. When I put it in service mode and fire everything up and it runs and runs and runs.