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Thread: Hydro spa hot tub heating problem

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    Hydro spa hot tub heating problem

    I have a hydro spa tub that ia set to 104 and its only heated to 98 been two days. Is this a bad element or high limit? I have temp tub to make sure its displaying right temp and it is. What do I need to check thanks

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Hydro spa hot tub heating problem

    I'd check the hi temp cutout first. Is the tub readout correct?
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Hydro spa hot tub heating problem

    Update on this. It turned out to be the heat relay. I took a cut wheel and cut the outer layer on the relay top off. Took little sand paper and cleaned the contacts and it is working perfect now. For those needing know if this could be your problem. If you have power going to the board but don't have 240 on your element most likely its the heat relay have corrosive build up on the contacts. Took me maybe a hour to open the relay up and clean contacts.

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    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: Hydro spa hot tub heating problem

    Good to know. Thanks for figuring this out and posting the solution so others can be helped.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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