Hot Tub FL1 Error Code

Hi, I’m getting repeated FL1 error codes on my Hawthorne Sundance hot tub. Sometimes cleared by powering down then up, sometimes cleared by filling the tub to max recommended. When I clear it the hot tub will run until the water is re-heated, then will come back. Can’t find leak in system. How do I distinguish between a leak in the system, and a bad pressure switch?


  1. Nigel


    Hi Matthew. Sounds like a dirty filter. Try removing the filter for a brief period ie 15min and run the system without to see if the FL1 message goes away. If it remains I would suggest you contact our Sundance Service Support Desk to book a diagnostic and repair of your Sundance Hawthorne Spa.

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