Product Details
- Product type: Straight blade control unit replacement
- Brand: Hayward
- Part number: GLX-CTL-TR-RJ
- Compatible system type: Select Hayward Goldline Aqua Trol salt chlorine generators
- Use: Replacement control unit for compatible Aqua Trol RJ-style systems
- Plug / cord style: Straight blade style
- Best use case: Replacing a failed or damaged control unit without replacing the full salt chlorination setup
- Package contents: Confirm whether enclosure, display, cord, mounting hardware, or instructions are included
- Installation requirement: Electrical installation should be handled with power fully off and compatibility confirmed
Compatibility and Buyer Check
Before ordering, confirm that your Aqua Trol system manual or existing control unit label calls for GLX-CTL-TR-RJ. This part should be matched by model number, plug style, wiring setup, and system type.
Do not order by image alone. Hayward Aqua Trol control units can look similar, but straight blade and twist-lock versions are not the same. If your system uses the twist-lock version, review the Hayward GLX-CTL-TR-HP-T twist-lock control unit before purchasing this straight blade unit.
If you are replacing the control unit as part of a full Aqua Trol setup, compare your system with the Hayward W3AQ-TROL-RJ AquaTrol salt chlorination system before ordering only the control unit.
What This Control Unit Does
The control unit manages the operation of the compatible Hayward Aqua Trol salt chlorine generator system. It works with the connected salt cell and system components to support chlorine production from salt water.
Replacing the control unit may help when the existing controller is physically damaged, not powering correctly, or confirmed as the failed part. It will not fix every salt system issue. Low chlorine output, warning lights, no flow messages, or salt reading problems may also come from the cell, flow switch, plumbing, wiring, or water chemistry.
Before You Order
Check these details before purchasing:
- Confirm the exact part number GLX-CTL-TR-RJ.
- Verify your system is a compatible Hayward Goldline Aqua Trol model.
- Confirm that you need a straight blade control unit, not a twist-lock version.
- Compare the plug style, wiring, display, and enclosure with your existing unit.
- Check the salt cell, flow switch, and wiring before replacing the full control unit.
- If only the control board is damaged, review the Hayward GLX-PCB-TROL-HP main PCB replacement before buying a complete control unit.
- If your issue is related to plumbing or return-jet hardware, check the Hayward GLX-RJ elbow return jet fitting and Hayward GLX-CELL pipe before replacing the controller.
Installation and Safety Notes
Turn off power at the breaker before removing or installing the control unit. Do not work on pool electrical equipment while the system is powered.
Before disconnecting the old unit, take clear photos of all wiring and connections. Install the replacement in the same location and follow the Hayward service manual for wiring, mounting, and startup steps. If you are not experienced with pool equipment wiring, use a qualified pool technician or electrician.
After installation, verify the salt cell connection, system settings, diagnostic readings, and normal operation before leaving the unit running unattended.
Maintenance and Troubleshooting Tips
To help protect the replacement control unit:
- Keep the enclosure closed and protected from moisture.
- Inspect cords, terminals, and connectors during service.
- Maintain the correct salt level recommended by the system manual.
- Keep the salt cell clean and free from heavy scale buildup.
- Check flow and plumbing issues before replacing electrical parts.
- Avoid repeated power cycling without identifying the cause of the error.












