Hayward Goldline Pro Logic Chlorinator keeps turning off

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PaulChell213

Gold Supporter
Apr 25, 2024
13
Brandon, Florida
Pool Size
12000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
After noticing an unusual decline in Salt and Chlorine readings, we noticed our Chlorinator keeps shutting off. We will turn it on and then within minutes it is off again. I’m at a loss of where to go after troubleshooting the best we could - hoping someone here may be able to offer some advise.

We use the Taylor Pro Salt test and leverage the Pool Math app….. the following are our salt and chlorine readings:
  • 8/16
    • FC: 3.5
    • CC: 0
    • Salt: 3400
  • 9/2
    • FC: 2.0
    • CC: 0
    • Salt: 3000
  • 9/10 - after test, we added recommended 40lbs of salt as well as 35oz Liquid Chlorine
    • FC: 0.5
    • CC: 0
    • Salt: 2800
  • 9/14
    • FC: 0.0
    • CC: 0
    • Salt: 3200 (because we put in 40lbs salt 4 days prior)
We followed the troubleshooting steps listed in Hayward Prologic Troubleshooting Guide and nothing is working. The diagnostics show the following:
  1. +24.50V. +5.98A, 86F. 2800PPM
  2. -24.34V. -6.18A. 86F. 3000PPM
  3. +24.50V. +6.21A. 86F. 3000PPM
We have a Hayward Turbo Cell940 extended life cell. According to Hayward T940 Manual, our Hayward Goldline Pro Logic should be set to cell model T-15 which it is in the system, so all good there. Also, from the above readings, our actual voltage is below 35V. We attempted to ‘reset average salt’ but that saved number only saves as the ‘default’ salt and is not registering when we do the above 3 readings again. Not sure why the Chlorinator is shutting itself off.

Our Turbo Cell 940 extend life cell was replaced 11/2/20 so it is almost 4 years old. We took the turbo cell to the local pool store Leslies and they tested it and said it is working fine.

If you have any advice to why the Chlorinator keeps shutting itself off, please let me know. I am also interested in how to get the ProLogic to not shut off the Chlorinator when we know the salt is fine and update the ‘average salt’. This is very frustrating to see our chemicals go downhill the way they are and I think it the system.

For additional information (if it helps), we replaced our pool pump as well as the main board in our ProLogic in 8/2020, then we replaced the Tcell in 11/2020.

Many thanks for all the great help and education on this forum - I would have never be able to troubleshoot the above without all your help!
 
Your system is generating chlorine when it shows these diagnostics:

The diagnostics show the following:

  1. +24.50V. +5.98A, 86F. 2800PPM
  2. -24.34V. -6.18A. 86F. 3000PPM
  3. +24.50V. +6.21A. 86F. 3000PPM
Click to expand...

What generation % is your system set for?
 
We plan on starting the SLAM process tonight but trying to understand why the Chlorinator is not generating chlorine and keeps shutting itself off when it had enough salt in the water. We are very familiar with the SLAM process and have all the chemicals needed but our concern is why isn’t the turbo cell kicking on when it tests at the pool store as working just fine.
 
The diagnostics show your cell is generating.

The SWG generates chlorine slowly while algae can consume chlorine rapidly.
 
PaulChell213 said:
We have the % set at 35% and run the pool for 10hrs per day.
Click to expand...
The Aquarite has a 180 minute cycle. At 35% the Aquarite will generate for 63 minutes and be off or standby for 117 minutes.

Increase the % if you want more chlorine or increase your pump runtime or both.

35% for 10 hours in your pool will generate 2ppm of FC/day. That is inadequate for FL this time of year.

1726356044335.png
 
ajw22 said:
The Aquarite has a 180 minute cycle. At 35% the Aquarite will generate for 63 minutes and be off or standby for 117 minutes.

Increase the % if you want more chlorine or increase your pump runtime or both.

35% for 10 hours in your pool will generate 2ppm of FC/day. That is inadequate for FL this time of year.

View attachment 609889
Click to expand...
Thank you so much - this is very helpful. While we have the % set as a baseline, each time we go into the system the Chlorinator is showing ‘Chlorinator Off’ - do you think this is equivalent to it being on standby? What is odd is we haven’t changed our % since we put the pool in 10 years ago and never had issues with it not creating chlorine other than when the tcell broke which in this case it isn’t. I can tell you that we don’t normally check the “Chlorinator status” for on or off during the day but have been today since the FC was at 0. I don’t understand enough about how the system works so hearing about the standby mode is new to me. Do you think getting the chlorine up with liquid chlorine and increasing the SWG will get it working, or do you suspect something is off with the system give the “Chlorination Off”? We do plan on doing a SLAM tonight but I’m wondering if I need to get a tech person out to look at the system. Thank you so much for your time.
 
Your system is working based on what you posted.

You have an algae problem.

Fix your algae problem with the SLAM Process and then see how your SWG performs.
 
ajw22 said:
Your system is working based on what you posted.

You have an algae problem.

Fix your algae problem with the SLAM Process and then see how your SWG performs.
Click to expand...
Thank you Allen - We are ready to start the SLAM process. The one element that has changed a lot is we have had an unusually high amount of rain in the past month in the Tampa Bay Area. The first 4 days of the month generated more rain than we have had all year so I’m thinking that is contributing to our problem. I will follow your advise on SLAM and increase our % SWG as well. Thank you for taking the time to provide guidance - much appreciated.
 

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PaulChell213 said:
Yes it is in a cage. Mainly due to mosquitos as we have minimal landscape and trees by the pool itself. We have also clean the filter more frequently than we do during our so called winter time.
Click to expand...
That explains why your pool needs less daily FC.

Your PoolMath logs show that you have been running your FC close to the minimum for your CYA. Running there and eventually algae will bite you. Better to run your FC at the high end of the range.

www.troublefreepool.com

The Free Chlorine and Cyanuric Acid Relationship

Managing your cyanuric acid and Free Chlorine levels is key to stabilizing your pool. Learn how these two items affect each other.
www.troublefreepool.com www.troublefreepool.com
 
ajw22 said:
That explains why your pool needs less daily FC.

Your PoolMath logs show that you have been running your FC close to the minimum for your CYA. Running there and eventually algae will bite you. Better to run your FC at the high end of the range.

www.troublefreepool.com

The Free Chlorine and Cyanuric Acid Relationship

Managing your cyanuric acid and Free Chlorine levels is key to stabilizing your pool. Learn how these two items affect each other.
www.troublefreepool.com www.troublefreepool.com
Click to expand...
I agree completely. I was reviewing the levels against the salt water chlorine chart and CYA levels found on this forum and had a light bulb moment. Really appreciate all the information on TFP - Also, thank you for the screen shot earlier as I didn’t realize you could check the SWG in effect of adding - this part of your app is like gold!
 
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