I am new to this site and was hoping someone could help me out. My son used the spa last night. Freeze protect came on during while he was in the spa. When he got out he was able to shut everything off (lights, spa heater) except the pump because of the freeze protection. Later this morning I noticed the spa heater came back on. Freeze protect turned off and for some reason the spa heater came back on. Does this sound like a familiar scenario to anyone?