I have a Blue Ridge Spa Model 87887 that I shut off power to and drained, refilled, and turned power back on. I ran water pump and it did fine. Heat light was on and worked fine and was circulating with hot pump. I check the next day and not heat or heat light and where the temp should be it now read "SP6". Tried pressing HL reset switch, no change. Cycled breaker, no change. No info in booklet. At a standstill and would greatly appreciate any help. Thank You, Eddy