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Thread: Getting a "Hot" reading when the water is not hot.

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    Getting a "Hot" reading when the water is not hot.

    I am getting a "hot" readout on my Goldline control system but the water temperature is 82 degrees F. I dumped a bunch of water and I started getting a salt reading and the pool cleared up. But after about a week the "hot" readout is back and the pool is algeaing up again. I would not think 82F is too hot for the system to operate. What's the problem??

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    JasonLion's Avatar
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    Re: Getting a "Hot" reading when the water is not hot.

    Welcome to TFP!

    Either you have a lose connection between the cell and the control box, or the temperature sensor in the cell is failing.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Getting a "Hot" reading when the water is not hot.

    Thanks for the response. The connections seem fine. How difficult is it to change out the sensor? Does it require replacing the entire cell? Is it something I can do or do I need a pool professional?

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,879

    Re: Getting a "Hot" reading when the water is not hot.

    I believe you need to replace the cell, which is fairly simple. With everything turned off, the old cell gets unplugged from the control box, and then you unscrew the unions at either end. Then you install the new one by tightening the unions at either end and plugging the new cell into the control box.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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