hello all, I have a pentair mastertemp 400. Spa is in ground attached to the pool with a spillover. The service system light was on, i took off the front and the light switched back and forth between service heater/service system by the time I took off the top the PS light was on, but shut back off. I didn't do anything now no lights are on, but it still takes forever to heat, I've had it on for 2 hours and it went from 58-72. Outside temp is 59