?     Asked on 3/9/2015by Russ

I need to replace my Goldline AQL-P4 Aqua Logic automation control. I only have a pool with a pool light. I think the board is out on it. What model can I replace it with reasonably? Will it fit into the other outside casing I have. Is it remote as well? Can I reprogram my old remote to match with it.
 Reply

A  Answered on 3/10/2015 by InyoPools Product Specialist Robert M.

Hello Russ - The main board for the Aqua Logic is part number GLX-PCB-MAIN. This board will fit in your existing box. The old remote should have no issues communicating with this board.
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?     Asked on 5/1/2016by Roger Fernandez

some buttons on display panel don't work, such Menu and RT Arrow. but others work power and lights, do i need to replace the board?
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A  Answered on 5/4/2016 by InyoPools Product Specialist Lennox H.

Hi Roger, It's a good change that this Display is bad, not the board.
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?     Asked on 5/10/2016by Bob

The display on my controller is not providing any info just a blank screen. Do l need to replace it
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A  Answered on 5/13/2016 by InyoPools Product Specialist Lennox H.

Hi Bob, It's possible that the Local Display is bad, first I would recommend following the troubleshooting instruction on page 10-11 in the Pro Logic Version 4.10 Diagnostics Manual to find out if the PCB or Display is the culprit.
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?     Asked on 6/30/2016by manuel

my menu button seems to be stuck nothing happens when i press it do i need to replace the pad
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A  Answered on 7/1/2016 by InyoPools Product Specialist Lennox H.

Hi Manuel, You will need to replace the entire Local Display.
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?     Asked on 7/9/2016by Joey Castro

When it rains my local display stops keeping time. Several hours after the rain the clock starts to work again and I would reset the clock to the correct time. My display does not go blank and My panel is water tight so no rain is getting into the panel. All other functions are working correctly on my display. Do I need to replace the display for the clock to maintain time when it rains?
 Reply

A  Answered on 7/15/2016 by InyoPools Product Specialist Lennox H.

Hi Joey, It's weird that this is happening only when it rains. Before replacing the display you will have to make sure that the problem is the display or else you will keep having this problem.
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?     Asked on 7/26/2016by mike

Replaced board about a month ago and now came home to no display. Checked 20 amp fuse and ok. How do you tell if transformer or the display or if board went bad. Thanks for your help.
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A  Answered on 8/2/2016 by InyoPools Product Specialist Lennox H.

Hi Mike, You can use a volt meter to test the lead from the transformer which can the instructions can be found in the Pro Logic Diagnostics Manual.
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?     Asked on 7/30/2016by Glenn

What was Joey Castro's outcome. I am having the same kind of issues. My display looks broken up like a display with moisture in it? The time gets out of whack. I am having to set the time everyday?
 Reply

A  Answered on 8/10/2016 by InyoPools Product Specialist Alan M.

It is very likely that the panel is not completely air tight and is allowing water or moist air to seep in. I would recommend contacting the manufacturer, Hayward, at 1-800-657-2287 and speak with a representative about this issue. They may have a better solution as opposed to replacing the display. If not, then replacing the display panel will be the best option.
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?     Asked on 9/4/2016by Brett Clover

Menu & arrow keys push in but functions not responding. Disassembled key pad and inspected. looked ok. Occasionally, when pressing very hard the function will work. Other than this issue, the systems is working. Display screen automatically scrolls through the system status.
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A  Answered on 9/21/2016 by InyoPools Product Specialist Stacey M.

Hello Brett, I would call to troubleshoot and run diagnostic with Hayward 800-657-2287.
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?     Asked on 3/10/2017by Mike W

Is the system clock/time maintained in the display panel or the control board? My AQL-P-4 keeps terrible time, I have to reset it every day. Need to know if I need to replace the display or the control board.
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A  Answered on 3/14/2017 by InyoPools Product Specialist Andy O.

Hello Mike- It sounds like you have a bad control board on your P-4/PS-4. I would give Hayward a call with your serial number at 908-355-7995 so they can make sure you get the right one.
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?     Asked on 5/22/2017by Michel

Could you explain what "Before Date Codes 0311" means. I installed an Aqua Logic System AQL-P-4 in 2008 and the Display is broken. I am looking for Model 066009F-2
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A  Answered on 5/22/2017 by InyoPools Product Specialist Patrick P.

That means manufactured before March 2011
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?     Asked on 5/23/2017by Michel

Do you ship to Canada
 Reply

A  Answered on 5/23/2017 by InyoPools Product Specialist Stacey M.

Hello Michel, you are responsible for all duties taxes and fees, we ship the order to the border.
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?     Asked on 5/24/2017by Inyo Visitor

My display screen is blank intermittently but all buttons seem to work fine. If I tap the unit or press some buttons sometimes it wakes up and I can read it sometimes it wakes and it gives odd characters for a bit then goes normal. Will changing just the display solve this. I did have the board replaced not too long ago. All other functions work once I can read the display. Thanks
 Reply

A  Answered on 5/29/2017 by InyoPools Product Specialist Lennox H.

Hi. I would recommend checking the wire harness to make sure it hs a tight connection. Also, unplug harness. Check across pins 1 (red) & 3 (yellow) for 5-10VDC. If have a tight connection and getting the correct voltage the display is bad.
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?     Asked on 5/31/2017by ARNOLD SAUCIER

MY DISPLAY TELLS ME THERE IS NO POWER TO MY CELL (CLORINE GENERATOR) . IS THERE A PROBLEM WITH MY CONTROLE SYSTEM?
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A  Answered on 6/6/2017 by InyoPools Product Specialist Lennox H.

Hi, Arnold. There is a problem with the system. You can use the ProLogic Diagnostic Manual to troubleshoot that error.
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?     Asked on 6/1/2017by Russell

I think my wiring harness is bad for the display. Where can I purchase just the harness?
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A  Answered on 6/3/2017 by InyoPools Product Specialist Lennox H.

Hi, Russell. Unfortunately, Hayward does not offer a wiring harness as a replacement part, it's only available with the PCB.
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?     Asked on 8/4/2017by Sherry Morgan

I just replaced my board after a lightening storm took it out. then my display only worked for power but could not set anything. So I replaced the display. But I can not set the pool to cholornate or check the salt on it. Is there a way to update the display? Or is the board not giving the display the information?
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A  Answered on 8/4/2017 by InyoPools Product Specialist Alex V.

Sherry, The display board simply displays the information from the main circuit board. I would recommend inspecting the main board to see if there are any signs of damage. The main board may need to be replaced. 
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?     Asked on 11/2/2017by peter bardoel

where does the pool heater get its 24 volt signal from. Is it from the main AQL-P4 main board or from the heater to the board
 Reply

A  Answered on 11/3/2017 by InyoPools Product Specialist Lennox H.

Hi, Peter. The heater communicates with the main controller from the main pcb.
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?     Asked on 4/25/2018by Sean Baxter

As of the last few weeks, our display is losing time. It tracks fine for a while and then, all of a sudden, it loses time (anywhere from 2 hours - 20 hours). Any idea what would cause this? I am looking for a wiring diagram to see how the unit is powered, but have not been successful. Can you also steer me to the wiring diagrams for this entire system? I can't tell if it is the unit or the power supply. Any help will be much appreciated.
 Reply

A  Answered on 4/28/2018 by InyoPools Product Specialist Lennox H.

Hi, Sean. The Main PCB is bad and will need to be replaced. We do not have an internal wiring diagram for the PCB and Local display. 
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?     Asked on 5/5/2018by Jeff

will this work with the ecommand 4?
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A  Answered on 5/6/2018 by InyoPools Product Specialist Lennox H.

Hi, Jeff. Ye, this Local Display will work with the Hayward E-Command 4 Controller. 
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?     Asked on 7/5/2018by Steve

Hello,I am having a problem with the controls on my P-4 The buttons have stopped working they still beep when pressed but not responsive,example push the menu button and no change in the screen etc.Pump still comes on at set time everyday I just cannot make any changes.Could this be the control panel that is bad or the PCB? Thank you
 Reply

A  Answered on 7/12/2018 by InyoPools Product Specialist Lennox H.

Hi, Steve. Usually, with that type of issue, it's the Display that is bad, not the Main PCB. 
 Reply


?     Asked on 7/24/2018by Terry

How to reset/reprogram salt system on Hayward pro logic system I just replaced salt cell 2 months ago water test shows 4500 cell reads 2800 same thing with old and new cells
 Reply

A  Answered on 7/24/2018 by InyoPools Product Specialist Lennox H.

Hi, Terry. To reset the average salt read, follow these steps: Press the ‘Menu’ button repeatedly, until the ‘Diagnostic Menu’ appears. Then press (>) one time. If all zeros or if ‘Chlorinator Off Percentage Met’, press (+) key. IF, after a short countdown delay, the display does not revert to zeros, continue. If this instant salt reading varies from the average press the (>) one time. Press the (+) key to replace the existing average with this new instant salt reading; this will start the average process over again. Press the ‘Menu’ button to exit. 
 Reply


?     Asked on 8/23/2018by Inyo Visitor

Pl-P-4 filter button when pressed works other button only beep no display at all
 Reply

A  Answered on 8/25/2018 by InyoPools Product Specialist Lennox H.

Hi. The Local Display is bad and will need to be replaced. 
 Reply


?     Asked on 1/23/2019by Danny

The filter will not shut off at the correct time. If I shut off the breaker it shuts off and when it cools down it seems to work again. After doing this for a couple of weeks, the Filter Button no longer works at all. If the button is bad what part should I order to replace the display. I have attached front/back pics of my display but could not find a model # on it.

 Reply

A  Answered on 1/24/2019 by InyoPools Product Specialist Lennox H.

Hi, Danny. This Local Display - GLX-LOCAL-P-4 is the correct replacement to correct the unresponsive keypad. 
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?     Asked on 1/25/2019by Andrew Bures

If i replace the display only and not the main PCB. will i need to reprogram the system such as pump times on and off and heater on and off?
 Reply

A  Answered on 1/30/2019 by InyoPools Product Specialist Joe S.

When changing out the Display Local P-4 & Ps-4 Before Date Codes 0311 - GLX-LOCAL-P-4 you will not need to reprogram the unit. The settings are saved within the PCB main board.
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?     Asked on 5/14/2019by Gary Tessero

The display flickers on and off. If I put pressure on the larger chip in the back, it will stay on. As soon as I let go, it goes off again. Is there any way to fix that or do I need to replace the whole display? Also, where can I find the date code? Gary
 Reply

A  Answered on 10/10/2019 by InyoPools Product Specialist Steve M.

Gary, in addition to the display the issue could exist in the PCB Circuit Board AquaLogic - GLXPCBMAIN. We are not certified to troubleshoot the Hayward / Goldline AquaLogic. I would suggest calling Hayward directly to see if they can help you isolate the issue. Hayward can be reached by calling 800.429.9273.
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?     Asked on 5/15/2019by Luke Oliver

How do I know the date?
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A  Answered on 5/16/2019 by InyoPools Product Specialist Michelle B.

Hello, You will have to contact the manufacturer on the question. You can reach them at 1-800-429-9273.
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?     Asked on 5/18/2019by Scott

I have on old Goldline Controls display and the screen no longer works - pool is running but cannot program anything - Numbers on back 011007C-1 PN 066009F-2 - will this unit replace the one i have?

 Reply

A  Answered on 5/21/2019 by Industry Professional

yes it is just a later revision # but is the same board
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?     Asked on 5/20/2019by STEVE

the time on my dislay is not tracking , it starts and stops but not keeping time accurately , could it just be the display or the glc-control board
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A  Answered on 5/21/2019 by Industry Professional

Per Hayward that is a pc board issue and you will require this AquaLogic PCB Board if you have the AquaLogic or this ProLogic PCB Board if you have the ProLogic
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?     Asked on 5/21/2019by Inyo Visitor

will replacing this part correct an issue with the unit not keeping time?
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A  Answered on 5/21/2019 by InyoPools Product Specialist Patrick P.

Per Hayward that is a pc board issue and you will require this AquaLogic PCB Board if you have the AquaLogic or this ProLogic PCB Board if you have the ProLogic
 Reply


?     Asked on 6/8/2019by Julie

We have replaced the main board in our Aqua Logic system, the local display showed "communication error", After troubleshooting with Hayward, we replaced the local display. The pump ran for about an hour and now the pump kicks off intermittently and the local display shows "communication error", We can push the filter button and the pump will kick on but it won't stay on for longer then a few minutes
 Reply

A  Answered on 10/10/2019 by Industry Professional

check the cable connections & refer to the troubleshooting guide we added for communication errors

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?     Asked on 7/6/2019by Casey

I have this display board. Right now it reads Communication Error. I’ve followed Hayward instruction to turn off and on breakers but I stil have the error and no buttons respond besides beeping. Is it the display or main board...
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A  Answered on 7/11/2019 by Industry Professional

We would need to be on site to determiner the issue. Use the attached troubleshooting flow chart guide from the mfg. to self diagnose. 

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?     Asked on 7/23/2019by Ken

I need the connector for this key pad to the main circuit board. do you know the part number and where i can find one? It's a 4 pin connector cable about 6 or 8 inches long.
 Reply

A  Answered on 7/24/2019 by Industry Professional

Unfortunately that is not a commonly replaced item, Hayward does not offer a part # for the cable.
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?     Asked on 8/7/2019by Gaby

I need the instruccion for Aqualogic Goldline, Can you send me please? Thanks
 Reply

A  Answered on 8/7/2019 by InyoPools Product Specialist Lennox H.

Hi, Gaby. You can use this link to download or view the Goldline AquaLogic Manual.
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?     Asked on 10/18/2019by John

My display looks identical. How do I know if it is "Pre-03/11"? I believe the pool was installed around 2007 and the controller looks original (old). Do you think I am safe?
 Reply

A  Answered on 10/23/2019 by InyoPools Product Specialist Lennox H.

Hi, John. You have a Pre-03/11 if your display looks identical. 
 Reply


?     Asked on 3/29/2020by Tom Cockburn

I have a unit which looks identical to this photo. The only items not functioning are the menu buttons and the advance and reverse buttons to each side. Is it possible to reset the unit?
 Reply

A  Answered on 3/30/2020 by InyoPools Product Specialist Lennox H.

Hi, Tom. Unfortunately, the entire Display will need to be replaced. 
 Reply