JustWannaSoak

Hi, hoping to find some answers, as I'm not seeing anything in my manual or on YouTube. I bought a hotspring Pace off someone that had it wired to 220. I only have a dedicated 15amp so I wired it with a gfci plug. This model says it can be a 110 or 220. Jets work great, new filter, made sure no airlock when I filled, but 12 hours later not one degree warmer. I opened the circuit board and see that when the jets are off, the red heat light is off, when I turn the jets on, the red heat light blinks. I have no idea what to do from here, hoping someone has some insight because I just wanna soak!! Thanks so much