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Solar Pool Control with low voltage output

Hayward

SKU: GL-235

AquaSolar – Total Solar Control System with dual digital display of pool water, solar collector and auxiliary sensor temperatures.

Features

GL-235 Solar Pool Control with low voltage output

Features and Benefits

  • Differential temperature control for solar heating of pools, spas, and hot tubs
  • Provides differential temperature control with an adjustable temperature limit
  • Selectable automatic nocturnal cooling
  • Recirculation freeze protection
  • Controls a 24VAC automatic valve actuator
  • High voltage output for controlling a filter pump or booster pump
  • EXPERT LINE products can only be purchased through your local pool professional or in-store.  Exclusions, other terms, and conditions may apply.
  • 3+ Year Parts and Labor Warranties*

*When sold by a Hayward Rewards® partner. Exclusions, other terms and conditions may apply.

Application New Construction
Brand Hayward
Channel Expert Line
GTIN 761418003907
Warranty - Labor 1-year
Master Carton Qty 1
Warranty - Parts 1-year
Pool Type In Ground
Shipping Dimensions 4 " x 7 " x 11 "
Shipping Weight 3 lb
Series Automation AquaSolar

Questions & Answers

15 answered question(s)

06/24/26

Q: Bonjour le témoin check sensor clignote sur Aqua solar gl-235 Tout est bien branché

A:
Si le voyant « CHECK SENSOR » clignote, il est possible qu'il y ait un circuit ouvert ou un court-circuit au niveau du capteur solaire. À l'aide d'un voltmètre, mesurez la tension aux bornes du capteur solaire. Si la tension ...

By Hayward Support

06/24/26

Q: I have a Hayward gl-235 solar panel controller. I just need a replacement cover. Where can I get one? The controller is actually a Hi-Tec but the box says gl-235

A:
Hello, we do not sell directly through our website. Please use our website's dealer locator to find your closest dealer. A Dealer can assist you with parts pricing and availability. Link to dealer locator: https://hayward.com/dealerlocator

By Hayward Support

06/24/26

Q: I have an AquaStar II solar controller and the check sensor light is blinking. What is the part number for the sensor?

A:
GLX-PC-12-KIT

By Hayward Support

06/24/26

Q: I have a GL 235 controller. I would like the same controller with a timer

A:
The GL-235 can be wired to a timer.

By Hayward Support

06/24/26

Q: What setting do I use with the solar heat ,cool or auto

A:
Here is a link to the manual. It has information on how to operate this unit. https://hayward.com/media/akeneo_connector/asset_files/0/9/092007G_RevK_85fb.pdf

By Hayward Support

06/24/26

Q: I need a replacement cover gasket for my Gl-235 unit. Can u give me a part#?

A:
Hello, Someone from our technical team will contact you shortly.

By Hayward Support

06/24/26

Q: my unit has all the right lights but no heat . I changed both sensors

A:
Please use our website's dealer locator to find the closest Hayward Authorized Service Center(HASC). A HASC may be needed to troubleshoot this issue.

By Hayward Support

06/24/26

Q: All terminals wired as directed. With 235 powered up and Manual Test switch engaged there is NO OUTPUT power to booster pump. Help rectify issue or ask questions to understand. Thank you

A:
Please use our website's dealer locator to find the closest Hayward Authorized Service Center(HASC). A HASC may be needed to troubleshoot this issue.

By Hayward Support

06/24/26

Q: My control box temperature knob has to be turned to at least 100 degrees before valve will open. What causes temp knob to not be accurate to pool temp? Thank you.

A:
Hello, Someone from our technical team will contact you shortly.

By Hayward Support

06/24/26

Q: My solar pool panel has no green lights and checked all circuit breakers

A:
Please use our website's dealer locator to find the closest Hayward Authorized Service Center(HASC). A HASC may be needed to troubleshoot this issue.

By Hayward Support

06/24/26

Q: where is the jumper for the pins located

A:
The jumpers are located on the Main PCB. Here is a link to the manual for more information https://hayward.com/media/akeneo_connector/asset_files/0/9/092007G_RevK_85fb.pdf

By Hayward Support

06/24/26

Q: I’ve hand this solar pool controller since summer of 2021. The last three seasons it has worked well. When we opened the pool this spring, it seems to be working in reverse (we have done nothing to the unit but turn it on). When it is off, the valve is in the open position (sending water through the solar array). When I put it in manual the valve closes. In manual all diodes eluminate (power, heat, cool). What’s wrong?

A:
It sounds like the GVA valve button underneath the Valve is reversed. Flip the toggle switch under the GVA 24 to the other side to correct.

By Hayward Support

06/24/26

Q: Do I hav to run the pool pump if leave the heating function on auto? The home I just purchased with a pool is set to a schedule and I want to know if I should change it to run 24/7 if I want the heater to be on.

A:
Yes, the filter pump has to be on to run the heater.

By Hayward Support

06/24/26

Q: I have the Aqua Solar GL-235. It burned up while I was in Mexico on vacation. Ordered one, installed it and working fine. Now the Solar Sensor is bad. What is the part number for the Solar Sensor?

A:
The part number for the sensor is GLX-PC-12-KIT

By Hayward Support

06/24/26

Q: I have three wires from the valve actuator. Where do I connect to?

A:
Hello, someone from our technical team will contact you shortly.

By Hayward Support

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