Unit comes on, gives an error code of r 13 128, then switches to water temp of 76, system service light is on, have already cleaned and backwahsed filter. Is there anything I can do to get this working or do I need to wait for service. this unit was installed new in May of 2013, I have company coming today!

Pool & Spa - Sta Rite - Sr200lp Max E Therm Pool & Spa Heater Dual Electronic...