Automation and JVA Value Setup/Recommendations

ebridges

Member
Apr 3, 2025
8
cleveland, NC
Hey Everyone, this is my first post for our new pool that was just finished and I'm looking for some recommendations on if I should change any of this setup regrading my JVAs for more control.

My current setup has 2 modes, pool & spa, but there is no dedicated spillover mode for the spa, it is always enabled where if I am in pool mode I have the spillover from the spa into the pool. This ia fine, but it means I have to run my pump at pretty high speed to get the desired waterfall effect with it being split between the pool returns, pool water features, and spa spillover. Running at a minimum of 2800 (max is 3450) for all 3 to be working adequately.

My question is, is the juice worth the squeeze to add in spillover mode in my Jandy Aqualink RS system? From reading on here I know I should be able to do it by moving my air blower from aux 3 to another aux, and then it becomes available as a baked in option from Jandy. If I do this, then I would lose my everything mode, where I have spillover and waterfalls from other features as well as the pool returns, which is the mode I figure it will be in when there are swimmers anyways. It would be limited to pool mode with water features and NO spillover, or spillover only mode with no water features (The 3 values on the right are the additional water features, scuppers).

I feel like I would gain the ability to be able to run the pump at a lower speed for better energy efficiency and pump life if I wasnt having to always sport the big spillover volume requirements. But im also not sure if that is even worth it because then skimmers wouldn't really be working strong at lower speeds anyways.

I do have more questions on adding JVAs to the pool return side to control the scuppers independently (3 at a time) and then adding a new JVA and valve on the pool return to control it independently. But this is the most extreme case to gain full control, but im just not sure again if any of this is really worth while, so just looking for some opinions from anyone who may have a similar set up or has thought about this in the past.

Equipment:

Jandy eSeries 2.7hp Pump, Jandy 400k Btu heater, Jandy Intellicolor Lights, Aqualink RS Y.g, Jandy AquaPure 1400

Pool is 21k Gallons
 

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Welcome to TFP.

It is your choice how you want to operate your pool.

A constantly running spillover causes aeration, which raises the pool pH more rapidly. It also creates more evaporation and scale on the spillover wall. Depending on the spillover surface materials, it can cause erosion or grout and tile failure.

@PoolGate has used the SMART JVAs. The Aqualink has limits on how many JVAs it can support unless you have the latest firmware.
 
I don't have a spa so can't comment on that setup. But the SmartJVAs allow you to control the JVA in 5% increments in real time. They go inline between Aqualink and the JVA. Easy to use. They do not allow you to program the SmartJVA for a specific purpose however. You can set the JVA manually where you want it and it will remember the last setting. You also lose your ability to move the JVA with the hard-button on the bottom of the JVA (usually use when closing the pool).

Unless you have a larger PS12 you only support 4 JVAs I believe. https://cdn.fluidrausa.com/-/media/...?rev=dd4745739f7f46409a352503759753b2?force=1


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Welcome to TFP.

It is your choice how you want to operate your pool.

A constantly running spillover causes aeration, which raises the pool pH more rapidly. It also creates more evaporation and scale on the spillover wall. Depending on the spillover surface materials, it can cause erosion or grout and tile failure.

@PoolGate has used the SMART JVAs. The Aqualink has limits on how many JVAs it can support unless you have the latest firmware.
I saw the Smart JVA modules from @PoolGate and its definitely an option to me because that should help with what I want. Just not sure how much support there is for them, I can barely find them online to purchase and there is no documentation on Jandys website on how to install or app support of if they were end of life at some point.

The callout with aeration raising Ph is one of my main concerns, because im already fighting it with it being a new plaster pool anyways and there isnt any real reason why those need to be on 100% of the time and having to run my pump so high.

So it sounds like an ideal setup is maybe to enable my spillover mode, by keeping my return JVA as it is (Whole Pool OR Spa Only), and then adding a new JVA to the Pool side to control the Pool returns and Scuppers.

If return JVA is in Pool Mode and Pool JVA is in "Off" mode, then that would essentially be my spillover mode, assuming I can set this up in the Aqualink app which I think I can.

BUT if I add a new valve (being the 4th now) to the Pool Return line isolated, then I would have absolute full control and could even run the water features while in "Spa" mode. (i.e. Return JVA in Pool Mode, Pool JVA in "ON" mode, and Pool Return isolated JVA in "Off" mode.)
 
I saw the Smart JVA modules from @PoolGate and its definitely an option to me because that should help with what I want. Just not sure how much support there is for them, I can barely find them online to purchase and there is no documentation on Jandys website on how to install or app support of if they were end of life at some point.
That is an overall problem with being in the Jandy ecosystem. Jandy does not support DIY.

Jandy left the Internet for sales and they send all support through their dealers. You are on your own with Jandy which is why some of us have left Jandy.

 
The SmartJVA doesn't need any support. It is a simple installation and setup. Since Jandy has no way to update firmware remotely, your system will never change. This is good and bad.

You could probably get your local pool store to order you the SmartJVA. If not, there are plenty on eBay. Smartjva for sale | eBay

What rev is your system? I am RS-4 Only REV T.2.
 
The SmartJVA doesn't need any support. It is a simple installation and setup. Since Jandy has no way to update firmware remotely, your system will never change. This is good and bad.

You could probably get your local pool store to order you the SmartJVA. If not, there are plenty on eBay. Smartjva for sale | eBay

What rev is your system? I am RS-4 Only REV T.2.
I am on Rev Yg, so it should support the Smart JVAs
 
Rev Yg has significant changes in Aqualink and adds virtual aux assignments and I think may allow more JVAs.

@MSchutzer has Yg and has exposed its features.
I guess my main questions comes down to these, is it worth tinkering with the system to add JVAs or Smart JVA control so I can have spa spillover not active at times and only pool circulation?

Will my pump life be extended by some factor if I am able to run it at lower speeds since I don't have to support spillover at all times?

Is the aeration factor of raising Ph substantial enough that I should look to disable these when they're not necessary?

I'm new to the pool life, so just general inquiries about what is most important when wanting to maintain the pool and equipment properly.
 
I guess my main questions comes down to these, is it worth tinkering with the system to add JVAs or Smart JVA control so I can have spa spillover not active at times and only pool circulation?

I think you are over engineering it. You don't need such fine control.

If you are the over engineer type then tinker away.


Will my pump life be extended by some factor if I am able to run it at lower speeds since I don't have to support spillover at all times?

Many of us run our pumps 24/7 at low speeds for best pump life.

Pump wear is caused more by on/off thermal cycles and start/stop than by continuous rotation.
Is the aeration factor of raising Ph substantial enough that I should look to disable these when they're not necessary?

Yes. You should see the difference.

I'm new to the pool life, so just general inquiries about what is most important when wanting to maintain the pool and equipment properly.
Simpler is usually better. You are not managing a nuclear power plant.
 

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I think you are over engineering it. You don't need such fine control.

If you are the over engineer type then tinker away.




Many of us run our pumps 24/7 at low speeds for best pump life.

Pump wear is caused more by on/off thermal cycles and start/stop than by continuous rotation.


Yes. You should see the difference.


Simpler is usually better. You are not managing a nuclear power plant.
100% I am the over engineering type, but this is what I needed to hear because I generally overthink things. I will most likely leave it as is for now and manage the water features manually as needed, but I can definitely see myself tinkering in the future :), in which case I will update here.

The input is much appreciated! Thank you!
 
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@PoolGate, you may be able to help me out with some smart JVA knowledge. So I did end up buying a smart JVA just because I want to see if I can get it to work how I want, more of an experiment.

I plugged the Smart JVA 24 VAC into the control panel 24 VAC, moved the existing 24VAC from control panel into the Smart JVA, removed my Return JVA from the Return port and put it into the Smart JVA, and then plugged the Smart JVA into Extra Aux port (solar, which I did confirm was working with my air blower)

After doing all of the physical configuration, I do see that there is a green light blinking on the Smart JVA so I know it is powered, and also all of the other systems come online. What is not happening though is the Smart JVA setting showing up on the OneTouch or iAqualink web app to configure. I see in your post from 2019 about how to get it working, which I have been following, that some relays are not necessary. Is that what I am missing? Is there some relay that i need to unplug from the Aux that I assigned the smart JVA to for it to work properly?

I also have been trying to unassign JVA from the Return in the 'Assign JVAs' screen, but I cant do that. Is that something that I need to do as well and if so, how do I unassign that even when it is unplugged?

One other thing is that I do have a OneTouch panel that my PB let me use, but its Rev D01 which is pretty old. I am trying to get into "installer Mode' to do additional set up for the Smart JVAs, but I cannot figure out how to get into this mode. Online I have read that you can set up multiple % positions to use in different one touch setting, but that it can only be done in a certain mode. I could be way off on some of these things as im just getting into it, but any input or experience with this could help me before I completely give up.
 
RETUFN and SUCTION JVAs are hard coded. You cannot unassign them or use a SmsrtJVA.

Use the SmartJVA on your other two sockets.
 
RETUFN and SUCTION JVAs are hard coded. You cannot unassign them or use a SmsrtJVA.

Use the SmartJVA on your other two sockets.
so if I plug the return JVA into the smart JVA, and assign it to an Aux, would that work? I really am trying to control the Return side here because it is what sends water to pool+spa always on only spa, and im trying to get Spa only, Pool only, and the 50/50 split with the smart jva control.

If thats the crux, then im out of luck unless I add a new JVA, which as this point I would do just to defeat this thing.