Hayward ProLogic

The ProLogic is Hayward's previous-generation automation, and unlike most discontinued equipment it did not simply stop being sold. Hayward published a dealer announcement retiring its accessories and remote controls on two dated lists, and both dates have now passed.

That is what makes this page worth writing. A ProLogic on the wall still runs. What has changed is what you can do when part of it stops.

It is also an AquaLogic

Worth settling first, because it sends people looking for the wrong parts.

Hayward sold this system under two names, and its own parts catalog gives the game away. The main circuit board is SKU GLX-PCB-PRO — PRO for ProLogic — and Hayward's listing describes it as PCB-MAIN, AQL, ALL VERSIONS. AQL is AquaLogic.

Same board, same system, two badges. If you own an AquaLogic, everything on this page applies to you, and the accessory part numbers all begin AQL.

The accessories are gone, on two dates

Hayward's announcement splits them:

List one, discontinued immediately — the wired wall-mount remotes for every model (AQL2-WW-PS-4, AQL2-WW-PS-8, AQL-WW-P-4), the wireless tabletop remotes (AQL2-TW-RF-P-4, PS-4 and PS-8, and AQL2-TB-RF-PS-8), the wireless spa-side remote AQL2-SS-RF, the AQL-RELAY-AC-KT relay, and the AQ-CO-HOMENET mini-server that puts the system on your network.

List two, while supplies last or until September 1, 2026 — the wireless base station AQL2-BASE-RF, the floating handheld AQL2-POD2, and the wired six-button spa-side AQL-SS-6B-W.

That second date has passed. As of now, both lists are closed.

The relay is the one that matters most. Remotes are how you prefer to use the system; the relay is how the system turns the pump on. A discontinued relay on a working automation system is a different order of problem from a discontinued handheld.

Hayward's commitment alongside the phase-out is that it will retain inventory for covering warranty claims. Read that precisely: stock is committed to warranty repairs, not to counter sales. A part held for warranty is not a part you can buy.

The app is not a promise

If remote control matters to you, there are two dependencies and neither has a future.

The AquaConnect app is the way a ProLogic is reached from a phone, and Hayward's wording about it is careful: the app remains an alternative method for customers to control their system, and Hayward will periodically review the viability of maintaining this app going forward.

That is a company telling you, politely, not to plan around it. And the hardware the app needs — the AQ-CO-HOMENET mini-server — is on the immediate-discontinue list already. So the app may outlive the box that connects to it, which is the wrong way round.

One board fits everything, and it can guess wrong

The single most useful thing to know about repairing a ProLogic.

GLX-PCB-PRO is the main board for all four models — P-4, PS-4, PS-8 and PS-16. It does not come in variants. Instead, the software asks the local display which model it is on power-up and configures itself to match.

Which produces a failure mode worth planning around. Hayward's own instruction:

If no local display is connected, or if there is a problem with the local display and it does not respond, the main PCB will assume that the system is a Pro Logic P-4 model.

So a board fitted with the display unplugged, or with a display that has itself failed, silently becomes the smallest system in the range — pool only, four relays. Nothing announces this. The fix is to repair the display and cycle the power, at which point the board re-checks and behaves correctly.

Write your settings down before you need to

This is the part to act on today, while everything works.

Hayward's board replacement instructions open with it: the Configuration, Timers and Settings menus contain all the information about how the ProLogic runs your pool, this information is stored on the main PCB, and it is very important that all of it gets transferred from the old board to the new one.

Step four of the same procedure then has you reset all configuration parameters to their defaults and type everything back in.

Put those together and the conclusion is uncomfortable: your entire configuration lives on the board most likely to fail, and there is no backup. If it fails suddenly, you cannot read the settings off it to copy them.

Photograph every screen of the Configuration, Timers and Settings menus now. It takes five minutes and it is the difference between a board swap and an afternoon of rebuilding a schedule from memory.

Variable-speed pumps, and the wiring rule

Hayward published an addendum specifically because the original manuals get this wrong, and it replaces those sections outright.

A P-4 can control exactly one variable-speed pump, from the Filter output only. The addendum says to disregard any reference to variable-speed pumps on the Lights and Aux outputs. A PS model can control up to eight.

Then the rule that causes damage when it is missed: the wiring from the 220 V breaker must not connect through the Filter relay. A variable-speed pump takes constant power and is commanded over the communication wiring — switching its supply with a relay is not how it is driven.

Each pump also needs an address. On a TriStar VS it is set with dip switches; on a TriStar it is entered as "001" under H.Comm ADDR, and on an EcoStar it is selected as "Pool Filter".

Moving to an OmniPL without moving the enclosure

The HLPROUPG retrofit kit puts current Omni boards and a wired touchscreen controller into the ProLogic enclosure already on your wall.

It fits P-4, PS-4 and PS-8. It does not fit a PS-16 on its own — Hayward's installation manual says two kits would be needed, one in the base enclosure and one in the expansion.

What you gain is the full range of current Omni wired and wireless controllers, the OmniLogic app, Alexa integration, and more color and show options on ColorLogic lights in OmniDirect mode. What you should check first is that the accessories you actually use are on Hayward's compatibility list — the retrofit manual warns plainly that some old accessories will not be connected, because they are not compatible with the OmniPL.

On a system whose remotes are all discontinued anyway, that objection carries less weight than it once did. The arithmetic has shifted: when the parts you would buy no longer exist, the retrofit stops being the expensive option.

The chlorination half

The ProLogic is automation and chlorination in one enclosure, which is the structural difference from the way Pentair's EasyTouch handled the same job — there the salt transformer is an option that may or may not be fitted, and adding it later is a parts exercise.

Here the salt side is native. The cell is a Hayward TurboCell, and the system's chlorinator output setting is one of the values worth photographing along with everything else.

If the salt side has stopped and the automation is fine, that is its own diagnosis rather than an automation fault — the salt cell walkthrough puts flow, temperature, salt level and cell age in the order worth checking them.