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Thread: Sundance spa heater wont shut off

  1. Back To Top    #1

    Join Date
    May 2008
    Fort Gratiot MI

    Sundance spa heater wont shut off

    Hey everyone,

    I have a Sundance Optima spa in my yard and the heater seems to not shut off. The temp is set at 80 degrees on the control panel but the water tem is at 104 degrees and wont come down at all.

    Anyone know of a fix for this?
    24' round Vinyl liner Doughboy 48" deep 52" sidewall
    1hp Doughboy pump w/timer
    Doughboy Silica II filter with Zeosand
    Raypak 180,00 btu heater
    BBB method
    Sundance Optima '97 450 gal. spa w/Delzone ozonator
    Beats driving to the lake, and I'm only a block away from the lake!!

  2. Back To Top    #2

    Join Date
    Jul 2012

    Re: Sundance spa heater wont shut off

    Did you figure it out?
    Check the condition of the copper thermostat bulb inside the well. If the bulb has visible damage you will need to replace the thermostat.
    Could be the controller itself, disconnect your spa side control from the spa and attempt to run the spa directly from the thermostat on your control box. If the temperature begins to drop and level out as desired, replace the spa control.
    25k I/G ecostar ccplus Polaris plaster

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