Hot tub circulation pump keeps shutting off

Asked by George Farraye

17 replies

Last Reply on February 27th, 2023 by Nigel

May 10, 2018

2004 Sweetwater Bahia model: Heater wiring on circuit board burnt. Drained spa. Received updated / replacement part numbers from Sundance. Replaced circuit board and heater unit. Refilled spa. FL2 on panel kept coming on and shutting off circ pump / heater. Called Sundance, told to replace flow switch. Replaced flow switch. Everything works fine for 2 – 3 days. Have temp set at 102, F1 or F4 skimming / heater mode. Now circ pump turns off between 12 hour cycles. No error messages displayed on panel. If I change modes circ pump will not come back on. If I turn off / turn on spa at wall junction box, circ pump starts working again. Then some time before next cycle it turns off again. No error messages. Please help. Thanks

Replies

  1. Nigel

    May 10, 2018

    Reply

    Hi George. What is the part number of the new board and eprom revision of the eprom chip on the new board?

  2. Tony Paolino

    October 16, 2018

    Reply

    we just had a pump replaced and a relay switch on our 2005 Calspa. model 05-5XCA-60 serial 05S09919 . After the repair we noticed one of the jets was lying on the bottom of the tub. The tub was running twice a day no problems until tonite, after the relay switch was put in. The jets went on and then pop.. everthing shut down. Nothing works and its not the breaker switch Any ideas of what this could be?

    • Nigel

      October 19, 2018

      Reply

      Hi Tony. On the surface sound like you could have blown a fuse. I would check your main fuse first.

  3. Tony Paolino

    October 24, 2018

    Reply

    Hi Nigel,
    Thank you for your response. I emptied the hot tub to clean it and refill You were right about the blown fuse.
    However, after replacing the fuse, everything worked until I turned the jets on and the same fuse blew again. I replaced it again but have not turned the jets on yet. Why would the same fuse blow again? Any suggestions?
    FYI we recently had one of the pumps replaced. would this have caused the fuse to blow?
    Thanks

    • Nigel

      October 25, 2018

      Reply

      Hi Tony. Yeah it sounds like that pump that is tied to the jet pump button you are pressing could be locked up. See if you can turn the shaft manually. If the shaft is freewheeling then check your wiring to the pump and to the board to make sure it is wired correct and there are no breaks. If the shaft is not freewheeling and it’s binding then you will have to loosen it or figure out why it is binding ie if it is plugged or there is an issue in the wet end at the impellor.

  4. Donald Puda

    December 04, 2020

    Reply

    2003 Sweetwater Bahia hot tub. Everything was working fine until electric company changed out house meter, tub showing FL1 code. Replaced flow sensor[deposits on switch] and now circ.pump cycles on and off. can hear the relay clicking with it. I hope I don’t need a new comp. board. any ideas? Got hit with 20inches of snow, not a good time for this to go down.

    • Nigel

      December 04, 2020

      Reply

      Hi Donald. Sounds a dirty filter, low water level in the spa, sticking weir gate assembly and or a plugged circ pump or circ pump line. Easy enough to check if it’s the filter. Simply remove the filter briefly ie 15min and see if the FL1 code clears. Make sure the weir gate moves up and down freely. Water should be touching the bottom of the head cushions on a level spa.

  5. Donald Puda

    December 08, 2020

    Reply

    Topped off the water, removed the filter, and replaced flow sensor. Circ. pump keeps cycling on and off. Can hear relay switching.

    • Nigel

      December 08, 2020

      Reply

      Try disconnecting your top side control panel and then power cycling the spa. If the circ pump comes on and it doesn’t cycle like you have said here then you could have a bad topside or bad connection at the topside.
      If the circ pump continues to cycle you could possibly have a bad circuit board and or bad circ pump Donald. Let me know if you need either. They are both in stock.

  6. Derrick Reschke

    July 29, 2022

    Reply

    Had a Balboa circuit board BP 501 replaced it with a BP 501/601 matched everything up with the old board was everything works except pump 1 light stays on the Tropic Seas Spa controller, the circulating pump is running but when pump 1 button is pushed the circulating pump turns off and pump 1 turns on. Any idea.

    • Nigel

      July 29, 2022

      Reply

      Sounds like some of your dip switches may not be set correctly Derrick.

  7. Kevin Mack

    October 24, 2022

    Reply

    07 sundance optima hot tub, circulation pump, temp sensor, high limit sensor, and flow switch have all been replaced, circulation pump shuts off and get overheating code, what could cause this?

    • Nigel

      October 24, 2022

      Reply

      Does the topside control panel eventually revert to the WATCHDOG code —- Kevin?

  8. Britney

    December 17, 2022

    Reply

    I replaced my pump I replaced my heater and then my circulating pump that used to run all the time now is shutting off after like 15 minutes 50 seconds or whatever and then turning back on after in time and then back on and back off let’s not working is my problem initially

    • Nigel

      December 17, 2022

      Reply

      What make and model spa do you have Britney?

  9. Theresa

    February 26, 2023

    Reply

    I have a master spa twilight 8.2 and lately after using the spa, I get out and the circulation pump shuts off. There is a slight hum to it so its immediately noticable when it shuts off. Tonight, I came inside for a few minutes and went back out to see if I could get the circulation running and it had come back on all by itself. What would cause the circulation pump to keep shutting off after using the hit tub?

    • Nigel

      February 27, 2023

      Reply

      Sounds like something to do with your circ pump settings and or the heater reaching it’s set temp when you leave the spa Theresa unless the pump is overheating and shutting off on it’s own.

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