DHK Posted June 16, 2019 Report Share Posted June 16, 2019 hot tub working fine but heating light does not light on sentry 605 control panel, heating element does not heat up, water stays cold. Water temp sensor? something in circuit board? Heating element itself? Is there a way to test? All wiring seems intact. replaced circuit board 5 years ago...worked fine until last month. Quote Link to comment Share on other sites More sharing options...
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