Question about Jandy Aqualink Rs4 One Touch Control System Control System

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6My heater heats my pool and spa. My jandy RS4 will make the heater turn on for the pool and operate properly attaining the set temp of 89 but, when in the Spa mode, will turn on and off intermittently, and run for about 30 seconds, never attaining the set temp of 104.

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  • 320thvnvet65 Aug 30, 2010

    If the Sensor is the problem, why does the heater work properly when in pool mode and only fail when in spa mode?

  • 320thvnvet65 Aug 30, 2010

    My heater heats my pool and spa. My jandy RS4 will make the heater turn on for the pool and operate properly attaining the set temp of 89 but, when in the Spa mode, will turn on and off intermittently, and run for about 30 seconds, never attaining the set temp of 104. The same Water Temp Sensor is used for the Pool and the Spa. Is the Senso bad?

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Just FYI, here is a general blog about some of the things it could be:
http://spababes.com/symptomandcure.html
Make sure the wiring to the sensor isn't grounding out on the metal cover, or intermittent.
And speaking of intermittent, make sure all wires are clean and making good contact with their terminals- this can be a big problem, and the cause of many crazy problems.
Also, refer to your manual and, just for kicks, do a system diagnosis on the unit- it might show up there.
Good luck, thanks for using FixYa, and hope this helps.

Posted on Aug 30, 2010

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  • Master
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Hi,
The sensor is the defective one.Just pull the sensor from the pipe by loosening the stainless steel clamp that holds it in the pipe.Then follow the wire back into the Aqua link box and unplug. Get a new one at your local store and replace. It's a common problem and you should be able to do it with ease.The water temp is attached to a pipe, and held on by a hose clamp, and the air sensor should be located near the box, and looks exactly the same as the water sensor (minus the hose clamp).
When it is set to higher temperature it is not able detect the heat.For safety purpose the Jandy heater will turn on and off.
It turns off due to false temp deducted and also turns on due to same reason.

The sensor will look like this replace it
6My heater heats my pool - bc5e0df.jpeg

post a comment for further assistance.
thank you for using fixya have a nice day:-)

Posted on Aug 30, 2010

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