OK, I know I must be missing something simple here , but I can not set our PoolPilot Digital above 31%. I just opened the pool a few days ago. Boost seems to be working fine. I can switch between cell power 1,2, and 3, but when I am in the regular cycle I can't get above 31%. Salt is at 3100ppm. Is this an issue with cold water temp? Currently reading 56 degrees.