Hot tub has FL1 flashing code

  1. Tub was working fine, drained and cleaned, refilled, now FL1 is flashing on control panel and won’t heat. Tried towel and hose trick several times. While hose is pushing water through low speed pump kicks on but code still flashes and won’t heat. Any suggestions? Thanks for your time and trouble!


  1. Nigel


    Bill what make and model spa do you have and what is the date built? This info can be found on the ID sticker near the Sentry Control Box.

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