I have a 2004 Sundance Optima and after getting it up and running after it was idle for several years, I ran the pumps overnight and it displayed a weird error code. I recently put in all new filters, changed the flo sensor, and had to change my main breaker feeding the hot tub. It ran fine overnight and then displayed a 8.8:8.8 on the display, with the heater symbol on and lock symbol displayed. Nothing will operate on the spa anymore, I am assuming because the lock is displayed. Do you have any idea what part could be generating this message? I included a picture of the display.