Skip lynch Posted June 5, 2021 Report Share Posted June 5, 2021 Grandee flashing red light on heater panel Quote Link to comment Share on other sites More sharing options...
ratchett Posted June 5, 2021 Report Share Posted June 5, 2021 How old is the spa (a serial number can be decoded to determine age). Is this the flashing light on the front logo? If so that should mean high limit sensor has tripped (test water temperature - is it over 108F or is it colder than set temp?). Also since I know the guys are gonna ask, take some photos of the wiring diagram and the control board, etc. If you see any scorch/burn marks around anything try to get a closeup photo and post them here. 2 Quote Link to comment Share on other sites More sharing options...
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