Preskey2021 0 Posted Wednesday at 03:05 PM Report Share Posted Wednesday at 03:05 PM Hello, I have taken on a Tiger River Spa Sumatran hot tub as a project. I have replaced the circulation pump with an original, new Watkins Silent flo 5000 pump, however the tub is not heating up?? Quote Link to post Share on other sites
RDspaguy 728 Posted Thursday at 03:23 AM Report Share Posted Thursday at 03:23 AM Are there any error codes or flashing lights? Are there any lights on the circuit board? Do you have a multimeter? Check voltage at the heater terminals on the board. Post some pics of the circuit board, wiring diagram, and equipment area. Quote Link to post Share on other sites
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